{"Address.sol":{"content":"// SPDX-License-Identifier: MIT\r\n\r\npragma solidity ^0.8.0;\r\n\r\n/**\r\n * @dev Collection of functions related to the address type\r\n */\r\nlibrary Address {\r\n    /**\r\n     * @dev Returns true if `account` is a contract.\r\n     *\r\n     * [IMPORTANT]\r\n     * ====\r\n     * It is unsafe to assume that an address for which this function returns\r\n     * false is an externally-owned account (EOA) and not a contract.\r\n     *\r\n     * Among others, `isContract` will return false for the following\r\n     * types of addresses:\r\n     *\r\n     *  - an externally-owned account\r\n     *  - a contract in construction\r\n     *  - an address where a contract will be created\r\n     *  - an address where a contract lived, but was destroyed\r\n     * ====\r\n     */\r\n    function isContract(address account) internal view returns (bool) {\r\n        // This method relies on extcodesize, which returns 0 for contracts in\r\n        // construction, since the code is only stored at the end of the\r\n        // constructor execution.\r\n\r\n        uint256 size;\r\n        assembly {\r\n            size := extcodesize(account)\r\n        }\r\n        return size \u003e 0;\r\n    }\r\n\r\n    /**\r\n     * @dev Replacement for Solidity\u0027s `transfer`: sends `amount` wei to\r\n     * `recipient`, forwarding all available gas and reverting on errors.\r\n     *\r\n     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\r\n     * of certain opcodes, possibly making contracts go over the 2300 gas limit\r\n     * imposed by `transfer`, making them unable to receive funds via\r\n     * `transfer`. {sendValue} removes this limitation.\r\n     *\r\n     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\r\n     *\r\n     * IMPORTANT: because control is transferred to `recipient`, care must be\r\n     * taken to not create reentrancy vulnerabilities. Consider using\r\n     * {ReentrancyGuard} or the\r\n     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\r\n     */\r\n    function sendValue(address payable recipient, uint256 amount) internal {\r\n        require(address(this).balance \u003e= amount, \"Address: insufficient balance\");\r\n\r\n        (bool success, ) = recipient.call{value: amount}(\"\");\r\n        require(success, \"Address: unable to send value, recipient may have reverted\");\r\n    }\r\n\r\n    /**\r\n     * @dev Performs a Solidity function call using a low level `call`. A\r\n     * plain `call` is an unsafe replacement for a function call: use this\r\n     * function instead.\r\n     *\r\n     * If `target` reverts with a revert reason, it is bubbled up by this\r\n     * function (like regular Solidity function calls).\r\n     *\r\n     * Returns the raw returned data. To convert to the expected return value,\r\n     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\r\n     *\r\n     * Requirements:\r\n     *\r\n     * - `target` must be a contract.\r\n     * - calling `target` with `data` must not revert.\r\n     *\r\n     * _Available since v3.1._\r\n     */\r\n    function functionCall(address target, bytes memory data) internal returns (bytes memory) {\r\n        return functionCall(target, data, \"Address: low-level call failed\");\r\n    }\r\n\r\n    /**\r\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\r\n     * `errorMessage` as a fallback revert reason when `target` reverts.\r\n     *\r\n     * _Available since v3.1._\r\n     */\r\n    function functionCall(\r\n        address target,\r\n        bytes memory data,\r\n        string memory errorMessage\r\n    ) internal returns (bytes memory) {\r\n        return functionCallWithValue(target, data, 0, errorMessage);\r\n    }\r\n\r\n    /**\r\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\r\n     * but also transferring `value` wei to `target`.\r\n     *\r\n     * Requirements:\r\n     *\r\n     * - the calling contract must have an ETH balance of at least `value`.\r\n     * - the called Solidity function must be `payable`.\r\n     *\r\n     * _Available since v3.1._\r\n     */\r\n    function functionCallWithValue(\r\n        address target,\r\n        bytes memory data,\r\n        uint256 value\r\n    ) internal returns (bytes memory) {\r\n        return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\r\n    }\r\n\r\n    /**\r\n     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\r\n     * with `errorMessage` as a fallback revert reason when `target` reverts.\r\n     *\r\n     * _Available since v3.1._\r\n     */\r\n    function functionCallWithValue(\r\n        address target,\r\n        bytes memory data,\r\n        uint256 value,\r\n        string memory errorMessage\r\n    ) internal returns (bytes memory) {\r\n        require(address(this).balance \u003e= value, \"Address: insufficient balance for call\");\r\n        require(isContract(target), \"Address: call to non-contract\");\r\n\r\n        (bool success, bytes memory returndata) = target.call{value: value}(data);\r\n        return _verifyCallResult(success, returndata, errorMessage);\r\n    }\r\n\r\n    /**\r\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\r\n     * but performing a static call.\r\n     *\r\n     * _Available since v3.3._\r\n     */\r\n    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\r\n        return functionStaticCall(target, data, \"Address: low-level static call failed\");\r\n    }\r\n\r\n    /**\r\n     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\r\n     * but performing a static call.\r\n     *\r\n     * _Available since v3.3._\r\n     */\r\n    function functionStaticCall(\r\n        address target,\r\n        bytes memory data,\r\n        string memory errorMessage\r\n    ) internal view returns (bytes memory) {\r\n        require(isContract(target), \"Address: static call to non-contract\");\r\n\r\n        (bool success, bytes memory returndata) = target.staticcall(data);\r\n        return _verifyCallResult(success, returndata, errorMessage);\r\n    }\r\n\r\n    /**\r\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\r\n     * but performing a delegate call.\r\n     *\r\n     * _Available since v3.4._\r\n     */\r\n    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\r\n        return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\r\n    }\r\n\r\n    /**\r\n     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\r\n     * but performing a delegate call.\r\n     *\r\n     * _Available since v3.4._\r\n     */\r\n    function functionDelegateCall(\r\n        address target,\r\n        bytes memory data,\r\n        string memory errorMessage\r\n    ) internal returns (bytes memory) {\r\n        require(isContract(target), \"Address: delegate call to non-contract\");\r\n\r\n        (bool success, bytes memory returndata) = target.delegatecall(data);\r\n        return _verifyCallResult(success, returndata, errorMessage);\r\n    }\r\n\r\n    function _verifyCallResult(\r\n        bool success,\r\n        bytes memory returndata,\r\n        string memory errorMessage\r\n    ) private pure returns (bytes memory) {\r\n        if (success) {\r\n            return returndata;\r\n        } else {\r\n            // Look for revert reason and bubble it up if present\r\n            if (returndata.length \u003e 0) {\r\n                // The easiest way to bubble the revert reason is using memory via assembly\r\n\r\n                assembly {\r\n                    let returndata_size := mload(returndata)\r\n                    revert(add(32, returndata), returndata_size)\r\n                }\r\n            } else {\r\n                revert(errorMessage);\r\n            }\r\n        }\r\n    }\r\n}"},"Context.sol":{"content":"// SPDX-License-Identifier: MIT\r\n\r\npragma solidity ^0.8.0;\r\n\r\n/*\r\n * @dev Provides information about the current execution context, including the\r\n * sender of the transaction and its data. While these are generally available\r\n * via msg.sender and msg.data, they should not be accessed in such a direct\r\n * manner, since when dealing with meta-transactions the account sending and\r\n * paying for execution may not be the actual sender (as far as an application\r\n * is concerned).\r\n *\r\n * This contract is only required for intermediate, library-like contracts.\r\n */\r\nabstract contract Context {\r\n    function _msgSender() internal view virtual returns (address) {\r\n        return msg.sender;\r\n    }\r\n\r\n    function _msgData() internal view virtual returns (bytes calldata) {\r\n        return msg.data;\r\n    }\r\n}"},"ERC165.sol":{"content":"// SPDX-License-Identifier: MIT\r\n\r\npragma solidity ^0.8.0;\r\n\r\nimport \"./IERC165.sol\";\r\n\r\n/**\r\n * @dev Implementation of the {IERC165} interface.\r\n *\r\n * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\r\n * for the additional interface id that will be supported. For example:\r\n *\r\n * ```solidity\r\n * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\r\n *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\r\n * }\r\n * ```\r\n *\r\n * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.\r\n */\r\nabstract contract ERC165 is IERC165 {\r\n    /**\r\n     * @dev See {IERC165-supportsInterface}.\r\n     */\r\n    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\r\n        return interfaceId == type(IERC165).interfaceId;\r\n    }\r\n}"},"ERC721A.sol":{"content":"// SPDX-License-Identifier: MIT\r\n\r\npragma solidity ^0.8.0;\r\n\r\nimport \"IERC721.sol\";\r\nimport \"IERC721Receiver.sol\";\r\nimport \"IERC721Metadata.sol\";\r\nimport \"IERC721Enumerable.sol\";\r\nimport \"Address.sol\";\r\nimport \"Context.sol\";\r\nimport \"Strings.sol\";\r\nimport \"ERC165.sol\";\r\n\r\n/**\r\n * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including\r\n * the Metadata and Enumerable extension. Built to optimize for lower gas during batch mints.\r\n *\r\n * Assumes serials are sequentially minted starting at 0 (e.g. 0, 1, 2, 3..).\r\n *\r\n * Assumes the number of issuable tokens (collection size) is capped and fits in a uint128.\r\n *\r\n * Does not support burning tokens to address(0).\r\n */\r\ncontract ERC721A is\r\n  Context,\r\n  ERC165,\r\n  IERC721,\r\n  IERC721Metadata,\r\n  IERC721Enumerable\r\n{\r\n  using Address for address;\r\n  using Strings for uint256;\r\n\r\n  struct TokenOwnership {\r\n    address addr;\r\n    uint64 startTimestamp;\r\n  }\r\n\r\n  struct AddressData {\r\n    uint128 balance;\r\n    uint128 numberMinted;\r\n  }\r\n\r\n  uint256 private currentIndex = 0;\r\n\r\n  uint256 internal immutable collectionSize;\r\n  uint256 internal immutable maxBatchSize;\r\n\r\n  // Token name\r\n  string private _name;\r\n\r\n  // Token symbol\r\n  string private _symbol;\r\n\r\n  // Mapping from token ID to ownership details\r\n  // An empty struct value does not necessarily mean the token is unowned. See ownershipOf implementation for details.\r\n  mapping(uint256 =\u003e TokenOwnership) private _ownerships;\r\n\r\n  // Mapping owner address to address data\r\n  mapping(address =\u003e AddressData) private _addressData;\r\n\r\n  // Mapping from token ID to approved address\r\n  mapping(uint256 =\u003e address) private _tokenApprovals;\r\n\r\n  // Mapping from owner to operator approvals\r\n  mapping(address =\u003e mapping(address =\u003e bool)) private _operatorApprovals;\r\n\r\n  /**\r\n   * @dev\r\n   * `maxBatchSize` refers to how much a minter can mint at a time.\r\n   * `collectionSize_` refers to how many tokens are in the collection.\r\n   */\r\n  constructor(\r\n    string memory name_,\r\n    string memory symbol_,\r\n    uint256 maxBatchSize_,\r\n    uint256 collectionSize_\r\n  ) {\r\n    require(\r\n      collectionSize_ \u003e 0,\r\n      \"ERC721A: collection must have a nonzero supply\"\r\n    );\r\n    require(maxBatchSize_ \u003e 0, \"ERC721A: max batch size must be nonzero\");\r\n    _name = name_;\r\n    _symbol = symbol_;\r\n    maxBatchSize = maxBatchSize_;\r\n    collectionSize = collectionSize_;\r\n  }\r\n\r\n  /**\r\n   * @dev See {IERC721Enumerable-totalSupply}.\r\n   */\r\n  function totalSupply() public view override returns (uint256) {\r\n    return currentIndex;\r\n  }\r\n\r\n  /**\r\n   * @dev See {IERC721Enumerable-tokenByIndex}.\r\n   */\r\n  function tokenByIndex(uint256 index) public view override returns (uint256) {\r\n    require(index \u003c totalSupply(), \"ERC721A: global index out of bounds\");\r\n    return index;\r\n  }\r\n\r\n  /**\r\n   * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.\r\n   * This read function is O(collectionSize). If calling from a separate contract, be sure to test gas first.\r\n   * It may also degrade with extremely large collection sizes (e.g \u003e\u003e 10000), test for your use case.\r\n   */\r\n  function tokenOfOwnerByIndex(address owner, uint256 index)\r\n    public\r\n    view\r\n    override\r\n    returns (uint256)\r\n  {\r\n    require(index \u003c balanceOf(owner), \"ERC721A: owner index out of bounds\");\r\n    uint256 numMintedSoFar = totalSupply();\r\n    uint256 tokenIdsIdx = 0;\r\n    address currOwnershipAddr = address(0);\r\n    for (uint256 i = 0; i \u003c numMintedSoFar; i++) {\r\n      TokenOwnership memory ownership = _ownerships[i];\r\n      if (ownership.addr != address(0)) {\r\n        currOwnershipAddr = ownership.addr;\r\n      }\r\n      if (currOwnershipAddr == owner) {\r\n        if (tokenIdsIdx == index) {\r\n          return i;\r\n        }\r\n        tokenIdsIdx++;\r\n      }\r\n    }\r\n    revert(\"ERC721A: unable to get token of owner by index\");\r\n  }\r\n\r\n  /**\r\n   * @dev See {IERC165-supportsInterface}.\r\n   */\r\n  function supportsInterface(bytes4 interfaceId)\r\n    public\r\n    view\r\n    virtual\r\n    override(ERC165, IERC165)\r\n    returns (bool)\r\n  {\r\n    return\r\n      interfaceId == type(IERC721).interfaceId ||\r\n      interfaceId == type(IERC721Metadata).interfaceId ||\r\n      interfaceId == type(IERC721Enumerable).interfaceId ||\r\n      super.supportsInterface(interfaceId);\r\n  }\r\n\r\n  /**\r\n   * @dev See {IERC721-balanceOf}.\r\n   */\r\n  function balanceOf(address owner) public view override returns (uint256) {\r\n    require(owner != address(0), \"ERC721A: balance query for the zero address\");\r\n    return uint256(_addressData[owner].balance);\r\n  }\r\n\r\n  function _numberMinted(address owner) internal view returns (uint256) {\r\n    require(\r\n      owner != address(0),\r\n      \"ERC721A: number minted query for the zero address\"\r\n    );\r\n    return uint256(_addressData[owner].numberMinted);\r\n  }\r\n\r\n  function ownershipOf(uint256 tokenId)\r\n    internal\r\n    view\r\n    returns (TokenOwnership memory)\r\n  {\r\n    require(_exists(tokenId), \"ERC721A: owner query for nonexistent token\");\r\n\r\n    uint256 lowestTokenToCheck;\r\n    if (tokenId \u003e= maxBatchSize) {\r\n      lowestTokenToCheck = tokenId - maxBatchSize + 1;\r\n    }\r\n\r\n    for (uint256 curr = tokenId; curr \u003e= lowestTokenToCheck; curr--) {\r\n      TokenOwnership memory ownership = _ownerships[curr];\r\n      if (ownership.addr != address(0)) {\r\n        return ownership;\r\n      }\r\n    }\r\n\r\n    revert(\"ERC721A: unable to determine the owner of token\");\r\n  }\r\n\r\n  /**\r\n   * @dev See {IERC721-ownerOf}.\r\n   */\r\n  function ownerOf(uint256 tokenId) public view override returns (address) {\r\n    return ownershipOf(tokenId).addr;\r\n  }\r\n\r\n  /**\r\n   * @dev See {IERC721Metadata-name}.\r\n   */\r\n  function name() public view virtual override returns (string memory) {\r\n    return _name;\r\n  }\r\n\r\n  /**\r\n   * @dev See {IERC721Metadata-symbol}.\r\n   */\r\n  function symbol() public view virtual override returns (string memory) {\r\n    return _symbol;\r\n  }\r\n\r\n  /**\r\n   * @dev See {IERC721Metadata-tokenURI}.\r\n   */\r\n  function tokenURI(uint256 tokenId)\r\n    public\r\n    view\r\n    virtual\r\n    override\r\n    returns (string memory)\r\n  {\r\n    require(\r\n      _exists(tokenId),\r\n      \"ERC721Metadata: URI query for nonexistent token\"\r\n    );\r\n\r\n    string memory baseURI = _baseURI();\r\n    return\r\n      bytes(baseURI).length \u003e 0\r\n        ? string(abi.encodePacked(baseURI, tokenId.toString()))\r\n        : \"\";\r\n  }\r\n\r\n  /**\r\n   * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each\r\n   * token will be the concatenation of the `baseURI` and the `tokenId`. Empty\r\n   * by default, can be overriden in child contracts.\r\n   */\r\n  function _baseURI() internal view virtual returns (string memory) {\r\n    return \"\";\r\n  }\r\n\r\n  /**\r\n   * @dev See {IERC721-approve}.\r\n   */\r\n  function approve(address to, uint256 tokenId) public override {\r\n    address owner = ERC721A.ownerOf(tokenId);\r\n    require(to != owner, \"ERC721A: approval to current owner\");\r\n\r\n    require(\r\n      _msgSender() == owner || isApprovedForAll(owner, _msgSender()),\r\n      \"ERC721A: approve caller is not owner nor approved for all\"\r\n    );\r\n\r\n    _approve(to, tokenId, owner);\r\n  }\r\n\r\n  /**\r\n   * @dev See {IERC721-getApproved}.\r\n   */\r\n  function getApproved(uint256 tokenId) public view override returns (address) {\r\n    require(_exists(tokenId), \"ERC721A: approved query for nonexistent token\");\r\n\r\n    return _tokenApprovals[tokenId];\r\n  }\r\n\r\n  /**\r\n   * @dev See {IERC721-setApprovalForAll}.\r\n   */\r\n  function setApprovalForAll(address operator, bool approved) public override {\r\n    require(operator != _msgSender(), \"ERC721A: approve to caller\");\r\n\r\n    _operatorApprovals[_msgSender()][operator] = approved;\r\n    emit ApprovalForAll(_msgSender(), operator, approved);\r\n  }\r\n\r\n  /**\r\n   * @dev See {IERC721-isApprovedForAll}.\r\n   */\r\n  function isApprovedForAll(address owner, address operator)\r\n    public\r\n    view\r\n    virtual\r\n    override\r\n    returns (bool)\r\n  {\r\n    return _operatorApprovals[owner][operator];\r\n  }\r\n\r\n  /**\r\n   * @dev See {IERC721-transferFrom}.\r\n   */\r\n  function transferFrom(\r\n    address from,\r\n    address to,\r\n    uint256 tokenId\r\n  ) public override {\r\n    _transfer(from, to, tokenId);\r\n  }\r\n\r\n  /**\r\n   * @dev See {IERC721-safeTransferFrom}.\r\n   */\r\n  function safeTransferFrom(\r\n    address from,\r\n    address to,\r\n    uint256 tokenId\r\n  ) public override {\r\n    safeTransferFrom(from, to, tokenId, \"\");\r\n  }\r\n\r\n  /**\r\n   * @dev See {IERC721-safeTransferFrom}.\r\n   */\r\n  function safeTransferFrom(\r\n    address from,\r\n    address to,\r\n    uint256 tokenId,\r\n    bytes memory _data\r\n  ) public override {\r\n    _transfer(from, to, tokenId);\r\n    require(\r\n      _checkOnERC721Received(from, to, tokenId, _data),\r\n      \"ERC721A: transfer to non ERC721Receiver implementer\"\r\n    );\r\n  }\r\n\r\n  /**\r\n   * @dev Returns whether `tokenId` exists.\r\n   *\r\n   * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.\r\n   *\r\n   * Tokens start existing when they are minted (`_mint`),\r\n   */\r\n  function _exists(uint256 tokenId) internal view returns (bool) {\r\n    return tokenId \u003c currentIndex;\r\n  }\r\n\r\n  function _safeMint(address to, uint256 quantity) internal {\r\n    _safeMint(to, quantity, \"\");\r\n  }\r\n\r\n  /**\r\n   * @dev Mints `quantity` tokens and transfers them to `to`.\r\n   *\r\n   * Requirements:\r\n   *\r\n   * - there must be `quantity` tokens remaining unminted in the total collection.\r\n   * - `to` cannot be the zero address.\r\n   * - `quantity` cannot be larger than the max batch size.\r\n   *\r\n   * Emits a {Transfer} event.\r\n   */\r\n  function _safeMint(\r\n    address to,\r\n    uint256 quantity,\r\n    bytes memory _data\r\n  ) internal {\r\n    uint256 startTokenId = currentIndex;\r\n    require(to != address(0), \"ERC721A: mint to the zero address\");\r\n    // We know if the first token in the batch doesn\u0027t exist, the other ones don\u0027t as well, because of serial ordering.\r\n    require(!_exists(startTokenId), \"ERC721A: token already minted\");\r\n    require(quantity \u003c= maxBatchSize, \"ERC721A: quantity to mint too high\");\r\n\r\n    _beforeTokenTransfers(address(0), to, startTokenId, quantity);\r\n\r\n    AddressData memory addressData = _addressData[to];\r\n    _addressData[to] = AddressData(\r\n      addressData.balance + uint128(quantity),\r\n      addressData.numberMinted + uint128(quantity)\r\n    );\r\n    _ownerships[startTokenId] = TokenOwnership(to, uint64(block.timestamp));\r\n\r\n    uint256 updatedIndex = startTokenId;\r\n\r\n    for (uint256 i = 0; i \u003c quantity; i++) {\r\n      emit Transfer(address(0), to, updatedIndex);\r\n      require(\r\n        _checkOnERC721Received(address(0), to, updatedIndex, _data),\r\n        \"ERC721A: transfer to non ERC721Receiver implementer\"\r\n      );\r\n      updatedIndex++;\r\n    }\r\n\r\n    currentIndex = updatedIndex;\r\n    _afterTokenTransfers(address(0), to, startTokenId, quantity);\r\n  }\r\n\r\n  /**\r\n   * @dev Transfers `tokenId` from `from` to `to`.\r\n   *\r\n   * Requirements:\r\n   *\r\n   * - `to` cannot be the zero address.\r\n   * - `tokenId` token must be owned by `from`.\r\n   *\r\n   * Emits a {Transfer} event.\r\n   */\r\n  function _transfer(\r\n    address from,\r\n    address to,\r\n    uint256 tokenId\r\n  ) private {\r\n    TokenOwnership memory prevOwnership = ownershipOf(tokenId);\r\n\r\n    bool isApprovedOrOwner = (_msgSender() == prevOwnership.addr ||\r\n      getApproved(tokenId) == _msgSender() ||\r\n      isApprovedForAll(prevOwnership.addr, _msgSender()));\r\n\r\n    require(\r\n      isApprovedOrOwner,\r\n      \"ERC721A: transfer caller is not owner nor approved\"\r\n    );\r\n\r\n    require(\r\n      prevOwnership.addr == from,\r\n      \"ERC721A: transfer from incorrect owner\"\r\n    );\r\n    require(to != address(0), \"ERC721A: transfer to the zero address\");\r\n\r\n    _beforeTokenTransfers(from, to, tokenId, 1);\r\n\r\n    // Clear approvals from the previous owner\r\n    _approve(address(0), tokenId, prevOwnership.addr);\r\n\r\n    _addressData[from].balance -= 1;\r\n    _addressData[to].balance += 1;\r\n    _ownerships[tokenId] = TokenOwnership(to, uint64(block.timestamp));\r\n\r\n    // If the ownership slot of tokenId+1 is not explicitly set, that means the transfer initiator owns it.\r\n    // Set the slot of tokenId+1 explicitly in storage to maintain correctness for ownerOf(tokenId+1) calls.\r\n    uint256 nextTokenId = tokenId + 1;\r\n    if (_ownerships[nextTokenId].addr == address(0)) {\r\n      if (_exists(nextTokenId)) {\r\n        _ownerships[nextTokenId] = TokenOwnership(\r\n          prevOwnership.addr,\r\n          prevOwnership.startTimestamp\r\n        );\r\n      }\r\n    }\r\n\r\n    emit Transfer(from, to, tokenId);\r\n    _afterTokenTransfers(from, to, tokenId, 1);\r\n  }\r\n\r\n  /**\r\n   * @dev Approve `to` to operate on `tokenId`\r\n   *\r\n   * Emits a {Approval} event.\r\n   */\r\n  function _approve(\r\n    address to,\r\n    uint256 tokenId,\r\n    address owner\r\n  ) private {\r\n    _tokenApprovals[tokenId] = to;\r\n    emit Approval(owner, to, tokenId);\r\n  }\r\n\r\n  uint256 public nextOwnerToExplicitlySet = 0;\r\n\r\n  /**\r\n   * @dev Explicitly set `owners` to eliminate loops in future calls of ownerOf().\r\n   */\r\n  function _setOwnersExplicit(uint256 quantity) internal {\r\n    uint256 oldNextOwnerToSet = nextOwnerToExplicitlySet;\r\n    require(quantity \u003e 0, \"quantity must be nonzero\");\r\n    uint256 endIndex = oldNextOwnerToSet + quantity - 1;\r\n    if (endIndex \u003e collectionSize - 1) {\r\n      endIndex = collectionSize - 1;\r\n    }\r\n    // We know if the last one in the group exists, all in the group exist, due to serial ordering.\r\n    require(_exists(endIndex), \"not enough minted yet for this cleanup\");\r\n    for (uint256 i = oldNextOwnerToSet; i \u003c= endIndex; i++) {\r\n      if (_ownerships[i].addr == address(0)) {\r\n        TokenOwnership memory ownership = ownershipOf(i);\r\n        _ownerships[i] = TokenOwnership(\r\n          ownership.addr,\r\n          ownership.startTimestamp\r\n        );\r\n      }\r\n    }\r\n    nextOwnerToExplicitlySet = endIndex + 1;\r\n  }\r\n\r\n  /**\r\n   * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.\r\n   * The call is not executed if the target address is not a contract.\r\n   *\r\n   * @param from address representing the previous owner of the given token ID\r\n   * @param to target address that will receive the tokens\r\n   * @param tokenId uint256 ID of the token to be transferred\r\n   * @param _data bytes optional data to send along with the call\r\n   * @return bool whether the call correctly returned the expected magic value\r\n   */\r\n  function _checkOnERC721Received(\r\n    address from,\r\n    address to,\r\n    uint256 tokenId,\r\n    bytes memory _data\r\n  ) private returns (bool) {\r\n    if (to.isContract()) {\r\n      try\r\n        IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data)\r\n      returns (bytes4 retval) {\r\n        return retval == IERC721Receiver(to).onERC721Received.selector;\r\n      } catch (bytes memory reason) {\r\n        if (reason.length == 0) {\r\n          revert(\"ERC721A: transfer to non ERC721Receiver implementer\");\r\n        } else {\r\n          assembly {\r\n            revert(add(32, reason), mload(reason))\r\n          }\r\n        }\r\n      }\r\n    } else {\r\n      return true;\r\n    }\r\n  }\r\n\r\n  /**\r\n   * @dev Hook that is called before a set of serially-ordered token ids are about to be transferred. This includes minting.\r\n   *\r\n   * startTokenId - the first token id to be transferred\r\n   * quantity - the amount to be transferred\r\n   *\r\n   * Calling conditions:\r\n   *\r\n   * - When `from` and `to` are both non-zero, ``from``\u0027s `tokenId` will be\r\n   * transferred to `to`.\r\n   * - When `from` is zero, `tokenId` will be minted for `to`.\r\n   */\r\n  function _beforeTokenTransfers(\r\n    address from,\r\n    address to,\r\n    uint256 startTokenId,\r\n    uint256 quantity\r\n  ) internal virtual {}\r\n\r\n  /**\r\n   * @dev Hook that is called after a set of serially-ordered token ids have been transferred. This includes\r\n   * minting.\r\n   *\r\n   * startTokenId - the first token id to be transferred\r\n   * quantity - the amount to be transferred\r\n   *\r\n   * Calling conditions:\r\n   *\r\n   * - when `from` and `to` are both non-zero.\r\n   * - `from` and `to` are never both zero.\r\n   */\r\n  function _afterTokenTransfers(\r\n    address from,\r\n    address to,\r\n    uint256 startTokenId,\r\n    uint256 quantity\r\n  ) internal virtual {}\r\n}"},"IERC165.sol":{"content":"// SPDX-License-Identifier: MIT\r\n\r\npragma solidity ^0.8.0;\r\n\r\n/**\r\n * @dev Interface of the ERC165 standard, as defined in the\r\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\r\n *\r\n * Implementers can declare support of contract interfaces, which can then be\r\n * queried by others ({ERC165Checker}).\r\n *\r\n * For an implementation, see {ERC165}.\r\n */\r\ninterface IERC165 {\r\n    /**\r\n     * @dev Returns true if this contract implements the interface defined by\r\n     * `interfaceId`. See the corresponding\r\n     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\r\n     * to learn more about how these ids are created.\r\n     *\r\n     * This function call must use less than 30 000 gas.\r\n     */\r\n    function supportsInterface(bytes4 interfaceId) external view returns (bool);\r\n}"},"IERC721.sol":{"content":"// SPDX-License-Identifier: MIT\r\n\r\npragma solidity ^0.8.0;\r\n\r\nimport \"IERC165.sol\";\r\n\r\n/**\r\n * @dev Required interface of an ERC721 compliant contract.\r\n */\r\ninterface IERC721 is IERC165 {\r\n    /**\r\n     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.\r\n     */\r\n    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);\r\n\r\n    /**\r\n     * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.\r\n     */\r\n    event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);\r\n\r\n    /**\r\n     * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\r\n     */\r\n    event ApprovalForAll(address indexed owner, address indexed operator, bool approved);\r\n\r\n    /**\r\n     * @dev Returns the number of tokens in ``owner``\u0027s account.\r\n     */\r\n    function balanceOf(address owner) external view returns (uint256 balance);\r\n\r\n    /**\r\n     * @dev Returns the owner of the `tokenId` token.\r\n     *\r\n     * Requirements:\r\n     *\r\n     * - `tokenId` must exist.\r\n     */\r\n    function ownerOf(uint256 tokenId) external view returns (address owner);\r\n\r\n    /**\r\n     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\r\n     * are aware of the ERC721 protocol to prevent tokens from being forever locked.\r\n     *\r\n     * Requirements:\r\n     *\r\n     * - `from` cannot be the zero address.\r\n     * - `to` cannot be the zero address.\r\n     * - `tokenId` token must exist and be owned by `from`.\r\n     * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.\r\n     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\r\n     *\r\n     * Emits a {Transfer} event.\r\n     */\r\n    function safeTransferFrom(\r\n        address from,\r\n        address to,\r\n        uint256 tokenId\r\n    ) external;\r\n\r\n    /**\r\n     * @dev Transfers `tokenId` token from `from` to `to`.\r\n     *\r\n     * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.\r\n     *\r\n     * Requirements:\r\n     *\r\n     * - `from` cannot be the zero address.\r\n     * - `to` cannot be the zero address.\r\n     * - `tokenId` token must be owned by `from`.\r\n     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\r\n     *\r\n     * Emits a {Transfer} event.\r\n     */\r\n    function transferFrom(\r\n        address from,\r\n        address to,\r\n        uint256 tokenId\r\n    ) external;\r\n\r\n    /**\r\n     * @dev Gives permission to `to` to transfer `tokenId` token to another account.\r\n     * The approval is cleared when the token is transferred.\r\n     *\r\n     * Only a single account can be approved at a time, so approving the zero address clears previous approvals.\r\n     *\r\n     * Requirements:\r\n     *\r\n     * - The caller must own the token or be an approved operator.\r\n     * - `tokenId` must exist.\r\n     *\r\n     * Emits an {Approval} event.\r\n     */\r\n    function approve(address to, uint256 tokenId) external;\r\n\r\n    /**\r\n     * @dev Returns the account approved for `tokenId` token.\r\n     *\r\n     * Requirements:\r\n     *\r\n     * - `tokenId` must exist.\r\n     */\r\n    function getApproved(uint256 tokenId) external view returns (address operator);\r\n\r\n    /**\r\n     * @dev Approve or remove `operator` as an operator for the caller.\r\n     * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\r\n     *\r\n     * Requirements:\r\n     *\r\n     * - The `operator` cannot be the caller.\r\n     *\r\n     * Emits an {ApprovalForAll} event.\r\n     */\r\n    function setApprovalForAll(address operator, bool _approved) external;\r\n\r\n    /**\r\n     * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\r\n     *\r\n     * See {setApprovalForAll}\r\n     */\r\n    function isApprovedForAll(address owner, address operator) external view returns (bool);\r\n\r\n    /**\r\n     * @dev Safely transfers `tokenId` token from `from` to `to`.\r\n     *\r\n     * Requirements:\r\n     *\r\n     * - `from` cannot be the zero address.\r\n     * - `to` cannot be the zero address.\r\n     * - `tokenId` token must exist and be owned by `from`.\r\n     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\r\n     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\r\n     *\r\n     * Emits a {Transfer} event.\r\n     */\r\n    function safeTransferFrom(\r\n        address from,\r\n        address to,\r\n        uint256 tokenId,\r\n        bytes calldata data\r\n    ) external;\r\n}"},"IERC721Enumerable.sol":{"content":"// SPDX-License-Identifier: MIT\r\n\r\npragma solidity ^0.8.0;\r\n\r\nimport \"../IERC721.sol\";\r\n\r\n/**\r\n * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension\r\n * @dev See https://eips.ethereum.org/EIPS/eip-721\r\n */\r\ninterface IERC721Enumerable is IERC721 {\r\n    /**\r\n     * @dev Returns the total amount of tokens stored by the contract.\r\n     */\r\n    function totalSupply() external view returns (uint256);\r\n\r\n    /**\r\n     * @dev Returns a token ID owned by `owner` at a given `index` of its token list.\r\n     * Use along with {balanceOf} to enumerate all of ``owner``\u0027s tokens.\r\n     */\r\n    function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId);\r\n\r\n    /**\r\n     * @dev Returns a token ID at a given `index` of all the tokens stored by the contract.\r\n     * Use along with {totalSupply} to enumerate all tokens.\r\n     */\r\n    function tokenByIndex(uint256 index) external view returns (uint256);\r\n}"},"IERC721Metadata.sol":{"content":"// SPDX-License-Identifier: MIT\r\n\r\npragma solidity ^0.8.0;\r\n\r\nimport \"IERC721.sol\";\r\n\r\n/**\r\n * @title ERC-721 Non-Fungible Token Standard, optional metadata extension\r\n * @dev See https://eips.ethereum.org/EIPS/eip-721\r\n */\r\ninterface IERC721Metadata is IERC721 {\r\n    /**\r\n     * @dev Returns the token collection name.\r\n     */\r\n    function name() external view returns (string memory);\r\n\r\n    /**\r\n     * @dev Returns the token collection symbol.\r\n     */\r\n    function symbol() external view returns (string memory);\r\n\r\n    /**\r\n     * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.\r\n     */\r\n    function tokenURI(uint256 tokenId) external view returns (string memory);\r\n}"},"IERC721Receiver.sol":{"content":"// SPDX-License-Identifier: MIT\r\n\r\npragma solidity ^0.8.0;\r\n\r\n/**\r\n * @title ERC721 token receiver interface\r\n * @dev Interface for any contract that wants to support safeTransfers\r\n * from ERC721 asset contracts.\r\n */\r\ninterface IERC721Receiver {\r\n    /**\r\n     * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}\r\n     * by `operator` from `from`, this function is called.\r\n     *\r\n     * It must return its Solidity selector to confirm the token transfer.\r\n     * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.\r\n     *\r\n     * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.\r\n     */\r\n    function onERC721Received(\r\n        address operator,\r\n        address from,\r\n        uint256 tokenId,\r\n        bytes calldata data\r\n    ) external returns (bytes4);\r\n}"},"KrypticKids.sol":{"content":"// SPDX-License-Identifier: GPL-3.0\r\npragma solidity ^0.8.0;\r\n\r\nimport \"Ownable.sol\";\r\nimport \"ReentrancyGuard.sol\";\r\nimport \"ERC721A.sol\";\r\nimport \"Strings.sol\";\r\nimport \"Payment.sol\";\r\n\r\n//                                              |                             |                                                \r\n//   .7~   ~!.                                 /#\\                 ^!.  :~.  /#\\       ~~                                      \r\n//   .5?  7Y:                             ?7    V                  J5: ^J^    V       .5J                                      \r\n//   :5? !?.    ^^ ^~  ~^   ^~  :~.:~^   ~YJ^  .~.    :~!^.        ?5 ^?.    .^.   :~^^5?    .^:.                              \r\n//   :5J7P^     YP?~^  !P^ ^P!  ~P7!YP7  ^5J:  :5^  .J5~~Y?        ?5!5!     ^P^  :55^~57   !7::!^                             \r\n//   :5P??5.   .5P^     JY J5   ^P: :5Y  .P7   :5:  ^G?   .        ?P5?5:    :P^  7P? .57   ?J^.                               \r\n//   .5?  JY.  :PP:     .5?P!   ^P:  5J  .PJ   :P:  ^G?            J5. ?5    ^P^  ?G?  5?    .:~?~                             \r\n//    5?  .5Y  :GG^      !G5.   ~G7.~G?   ?GJ: ~G^  .YP~~?~        Y5   5J   ^G^  ~G5:!G?  .!!::YJ                             \r\n//    7~   :7: .7?^      :G!    !G^^!7:    ^?^ :7:   .~!~^         !!   :J:  :7.   !7~^7~   ^7J?!                              \r\n//                      .~YJ     !G:                                                                                            \r\n//                      .!^      ^?.                                                                                            \r\n\r\ncontract KrypticKids is Ownable, ERC721A, ReentrancyGuard, Payment {\r\n    using Strings for uint256;\r\n    string public baseURI;\r\n\r\n  \t//Settings\r\n  \tuint256 public maxSupply = 8128;\r\n\tuint256 private packPrice = 0.023 ether;\r\n\tbool public publicStatus = false;\r\n\tmapping(address =\u003e uint256) public packCounter;\r\n    \r\n    //Number for random\r\n\tuint256 nonce;\r\n\r\n\t//Max Mint\r\n\tuint256 public maxPack = 5; \r\n\r\n\t//Shares\r\n\taddress[] private addressList = [0x8B9789ce9745721Dfd2aD9D06Ae7c1662eB7B105, 0xa2A874524A8d90c3CEAb01369196D23CDee8C038];\r\n\tuint[] private shareList = [50, 50];\r\n\r\n\t//Token\r\n\tconstructor(\r\n\tstring memory _name,\r\n\tstring memory _symbol,\r\n\tstring memory _initBaseURI\r\n\t) \r\n    ERC721A(_name, _symbol, 100, maxSupply)\r\n\t    Payment(addressList, shareList){\r\n\t    setURI(_initBaseURI);\r\n\t}\r\n\r\n    // Public Mint\r\n    function publicMintPack() nonReentrant public payable {\r\n\t\tuint256 s = totalSupply();\r\n\t\tuint256 mintAmount = 0;\r\n\t\trequire(s + 3 \u003c= maxSupply, \"Mint less\");\r\n\t\trequire(packCounter[msg.sender] \u003c= maxPack, \"Minted max amount of packs\");\r\n\t\trequire(msg.value \u003e= packPrice, \"ETH input is wrong\");\r\n\t\trequire(publicStatus == true, \"Public sale is not live\");\r\n        \r\n\t\tmintAmount = 2 + getRandPack();\r\n\t\t_safeMint(msg.sender, mintAmount, \"\");    \r\n\r\n\t\tpackCounter[msg.sender] += 1;\r\n\t\tdelete s;\r\n\t\tdelete mintAmount;\r\n    }\r\n\r\n\t// Owner Mint\r\n    function ownerMint(uint256 _mintAmount) public onlyOwner payable {\r\n\t\tuint256 s = totalSupply();\r\n\t\trequire(s + _mintAmount \u003c= maxSupply, \"Mint less\");\r\n         \r\n\t\t_safeMint(msg.sender, _mintAmount, \"\");    \r\n\t\tdelete s;\r\n    }\r\n\r\n\t//Random Pseudo-Number Generation \r\n\tfunction getRandPack() internal returns (uint) { \r\n\t\tuint randomnumber = uint(keccak256(abi.encodePacked(block.timestamp, msg.sender, nonce))) % 100; //0-99\r\n        nonce++;\r\n\t   if(randomnumber \u003c 89) {\r\n\t\t  randomnumber = 0;\r\n        }\r\n\t   if(randomnumber \u003e= 89) {\r\n\t\t  randomnumber = 1;\r\n\t   }\r\n        require(randomnumber \u003c 2, \"Extra card greater than 1\");\r\n  \t\treturn randomnumber;\r\n    }\r\n\r\n\t// Read Metadata\r\n\tfunction _baseURI() internal view virtual override returns (string memory) {\r\n\t   return baseURI;\r\n\t}\r\n\r\n\tfunction tokenURI(uint256 tokenId) public view virtual override returns (string memory) {\r\n\t   require(tokenId \u003c= maxSupply);\r\n\t   string memory currentBaseURI = _baseURI();\r\n\t   return bytes(currentBaseURI).length \u003e 0\t? string(abi.encodePacked(currentBaseURI, tokenId.toString())) : \"\";\r\n\t}\r\n\r\n\t//Max Switch\r\n\tfunction setMaxPack(uint256 _newMaxPackAmount) public onlyOwner {\r\n\t   maxPack = _newMaxPackAmount;\r\n\t}\r\n\t\r\n\t//Write Metadata\r\n\tfunction setURI(string memory _newBaseURI) public onlyOwner {\r\n\t   baseURI = _newBaseURI;\r\n\t}\r\n\r\n\t//price switch\r\n\tfunction setPackPrice(uint256 _newPackPrice) public onlyOwner {\r\n\t\tpackPrice = _newPackPrice;\r\n\t}\r\n\r\n\t//Set Public Status\r\n\tfunction setP(bool _pstatus) public onlyOwner {\r\n\t\tpublicStatus = _pstatus;\r\n\t}\r\n\t\r\n\tfunction withdraw() public payable onlyOwner {\r\n\t   (bool success, ) = payable(msg.sender).call{value: address(this).balance}(\"\");\r\n\t   require(success);\r\n\t}\r\n}"},"Ownable.sol":{"content":"// SPDX-License-Identifier: MIT\r\n\r\npragma solidity ^0.8.0;\r\n\r\nimport \"Context.sol\";\r\n\r\n/**\r\n * @dev Contract module which provides a basic access control mechanism, where\r\n * there is an account (an owner) that can be granted exclusive access to\r\n * specific functions.\r\n *\r\n * By default, the owner account will be the one that deploys the contract. This\r\n * can later be changed with {transferOwnership}.\r\n *\r\n * This module is used through inheritance. It will make available the modifier\r\n * `onlyOwner`, which can be applied to your functions to restrict their use to\r\n * the owner.\r\n */\r\nabstract contract Ownable is Context {\r\n    address private _owner;\r\n\r\n    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);\r\n\r\n    /**\r\n     * @dev Initializes the contract setting the deployer as the initial owner.\r\n     */\r\n    constructor() {\r\n        _setOwner(_msgSender());\r\n    }\r\n\r\n    /**\r\n     * @dev Returns the address of the current owner.\r\n     */\r\n    function owner() public view virtual returns (address) {\r\n        return _owner;\r\n    }\r\n\r\n    /**\r\n     * @dev Throws if called by any account other than the owner.\r\n     */\r\n    modifier onlyOwner() {\r\n        require(owner() == _msgSender(), \"Ownable: caller is not the owner\");\r\n        _;\r\n    }\r\n\r\n    /**\r\n     * @dev Leaves the contract without owner. It will not be possible to call\r\n     * `onlyOwner` functions anymore. Can only be called by the current owner.\r\n     *\r\n     * NOTE: Renouncing ownership will leave the contract without an owner,\r\n     * thereby removing any functionality that is only available to the owner.\r\n     */\r\n    function renounceOwnership() public virtual onlyOwner {\r\n        _setOwner(address(0));\r\n    }\r\n\r\n    /**\r\n     * @dev Transfers ownership of the contract to a new account (`newOwner`).\r\n     * Can only be called by the current owner.\r\n     */\r\n    function transferOwnership(address newOwner) public virtual onlyOwner {\r\n        require(newOwner != address(0), \"Ownable: new owner is the zero address\");\r\n        _setOwner(newOwner);\r\n    }\r\n\r\n    function _setOwner(address newOwner) private {\r\n        address oldOwner = _owner;\r\n        _owner = newOwner;\r\n        emit OwnershipTransferred(oldOwner, newOwner);\r\n    }\r\n}"},"Payment.sol":{"content":"// SPDX-License-Identifier: MIT\r\n\r\npragma solidity ^0.8.0;\r\n\r\nimport \"./Address.sol\";\r\nimport \"./Context.sol\";\r\nimport \"./SafeMath.sol\";\r\n\r\n/**\r\n * @title PaymentSplitter\r\n * @dev This contract allows to split Ether payments among a group of accounts. The sender does not need to be aware\r\n * that the Ether will be split in this way, since it is handled transparently by the contract.\r\n *\r\n * The split can be in equal parts or in any other arbitrary proportion. The way this is specified is by assigning each\r\n * account to a number of shares. Of all the Ether that this contract receives, each account will then be able to claim\r\n * an amount proportional to the percentage of total shares they were assigned.\r\n *\r\n * `PaymentSplitter` follows a _pull payment_ model. This means that payments are not automatically forwarded to the\r\n * accounts but kept in this contract, and the actual transfer is triggered as a separate step by calling the {release}\r\n * function.\r\n */\r\ncontract Payment is Context {\r\n    event PayeeAdded(address account, uint256 shares);\r\n    event PaymentReleased(address to, uint256 amount);\r\n    event PaymentReceived(address from, uint256 amount);\r\n\r\n    uint256 private _totalShares;\r\n    uint256 private _totalReleased;\r\n\r\n    mapping(address =\u003e uint256) private _shares;\r\n    mapping(address =\u003e uint256) private _released;\r\n    address[] private _payees;\r\n\r\n    /**\r\n     * @dev Creates an instance of `PaymentSplitter` where each account in `payees` is assigned the number of shares at\r\n     * the matching position in the `shares` array.\r\n     *\r\n     * All addresses in `payees` must be non-zero. Both arrays must have the same non-zero length, and there must be no\r\n     * duplicates in `payees`.\r\n     */\r\n    constructor(address[] memory payees, uint256[] memory shares_) payable {\r\n        require(payees.length == shares_.length, \"PaymentSplitter: payees and shares length mismatch\");\r\n        require(payees.length \u003e 0, \"PaymentSplitter: no payees\");\r\n\r\n        for (uint256 i = 0; i \u003c payees.length; i++) {\r\n            _addPayee(payees[i], shares_[i]);\r\n        }\r\n    }\r\n\r\n    /**\r\n     * @dev The Ether received will be logged with {PaymentReceived} events. Note that these events are not fully\r\n     * reliable: it\u0027s possible for a contract to receive Ether without triggering this function. This only affects the\r\n     * reliability of the events, and not the actual splitting of Ether.\r\n     *\r\n     * To learn more about this see the Solidity documentation for\r\n     * https://solidity.readthedocs.io/en/latest/contracts.html#fallback-function[fallback\r\n     * functions].\r\n     */\r\n    receive() external payable virtual {\r\n        emit PaymentReceived(_msgSender(), msg.value);\r\n    }\r\n\r\n    /**\r\n     * @dev Getter for the total shares held by payees.\r\n     */\r\n    function totalShares() public view returns (uint256) {\r\n        return _totalShares;\r\n    }\r\n\r\n    /**\r\n     * @dev Getter for the total amount of Ether already released.\r\n     */\r\n    function totalReleased() public view returns (uint256) {\r\n        return _totalReleased;\r\n    }\r\n\r\n    /**\r\n     * @dev Getter for the amount of shares held by an account.\r\n     */\r\n    function shares(address account) public view returns (uint256) {\r\n        return _shares[account];\r\n    }\r\n\r\n    /**\r\n     * @dev Getter for the amount of Ether already released to a payee.\r\n     */\r\n    function released(address account) public view returns (uint256) {\r\n        return _released[account];\r\n    }\r\n\r\n    /**\r\n     * @dev Getter for the address of the payee number `index`.\r\n     */\r\n    function payee(uint256 index) public view returns (address) {\r\n        return _payees[index];\r\n    }\r\n\r\n    /**\r\n     * @dev Triggers a transfer to `account` of the amount of Ether they are owed, according to their percentage of the\r\n     * total shares and their previous withdrawals.\r\n     */\r\n    function release(address payable account) public virtual {\r\n        require(_shares[account] \u003e 0, \"PaymentSplitter: account has no shares\");\r\n\r\n        uint256 totalReceived = address(this).balance + _totalReleased;\r\n        uint256 payment = (totalReceived * _shares[account]) / _totalShares - _released[account];\r\n\r\n        require(payment != 0, \"PaymentSplitter: account is not due payment\");\r\n\r\n        _released[account] = _released[account] + payment;\r\n        _totalReleased = _totalReleased + payment;\r\n\r\n        Address.sendValue(account, payment);\r\n        emit PaymentReleased(account, payment);\r\n    }\r\n\r\n    /**\r\n     * @dev Add a new payee to the contract.\r\n     * @param account The address of the payee to add.\r\n     * @param shares_ The number of shares owned by the payee.\r\n     */\r\n    function _addPayee(address account, uint256 shares_) private {\r\n        require(account != address(0), \"PaymentSplitter: account is the zero address\");\r\n        require(shares_ \u003e 0, \"PaymentSplitter: shares are 0\");\r\n        require(_shares[account] == 0, \"PaymentSplitter: account already has shares\");\r\n\r\n        _payees.push(account);\r\n        _shares[account] = shares_;\r\n        _totalShares = _totalShares + shares_;\r\n        emit PayeeAdded(account, shares_);\r\n    }\r\n}\r\n\r\n"},"ReentrancyGuard.sol":{"content":"// SPDX-License-Identifier: MIT\r\n\r\npragma solidity ^0.8.0;\r\n\r\n/**\r\n * @dev Contract module that helps prevent reentrant calls to a function.\r\n *\r\n * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier\r\n * available, which can be applied to functions to make sure there are no nested\r\n * (reentrant) calls to them.\r\n *\r\n * Note that because there is a single `nonReentrant` guard, functions marked as\r\n * `nonReentrant` may not call one another. This can be worked around by making\r\n * those functions `private`, and then adding `external` `nonReentrant` entry\r\n * points to them.\r\n *\r\n * TIP: If you would like to learn more about reentrancy and alternative ways\r\n * to protect against it, check out our blog post\r\n * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].\r\n */\r\nabstract contract ReentrancyGuard {\r\n    // Booleans are more expensive than uint256 or any type that takes up a full\r\n    // word because each write operation emits an extra SLOAD to first read the\r\n    // slot\u0027s contents, replace the bits taken up by the boolean, and then write\r\n    // back. This is the compiler\u0027s defense against contract upgrades and\r\n    // pointer aliasing, and it cannot be disabled.\r\n\r\n    // The values being non-zero value makes deployment a bit more expensive,\r\n    // but in exchange the refund on every call to nonReentrant will be lower in\r\n    // amount. Since refunds are capped to a percentage of the total\r\n    // transaction\u0027s gas, it is best to keep them low in cases like this one, to\r\n    // increase the likelihood of the full refund coming into effect.\r\n    uint256 private constant _NOT_ENTERED = 1;\r\n    uint256 private constant _ENTERED = 2;\r\n\r\n    uint256 private _status;\r\n\r\n    constructor() {\r\n        _status = _NOT_ENTERED;\r\n    }\r\n\r\n    /**\r\n     * @dev Prevents a contract from calling itself, directly or indirectly.\r\n     * Calling a `nonReentrant` function from another `nonReentrant`\r\n     * function is not supported. It is possible to prevent this from happening\r\n     * by making the `nonReentrant` function external, and make it call a\r\n     * `private` function that does the actual work.\r\n     */\r\n    modifier nonReentrant() {\r\n        // On the first call to nonReentrant, _notEntered will be true\r\n        require(_status != _ENTERED, \"ReentrancyGuard: reentrant call\");\r\n\r\n        // Any calls to nonReentrant after this point will fail\r\n        _status = _ENTERED;\r\n\r\n        _;\r\n\r\n        // By storing the original value once again, a refund is triggered (see\r\n        // https://eips.ethereum.org/EIPS/eip-2200)\r\n        _status = _NOT_ENTERED;\r\n    }\r\n}"},"SafeMath.sol":{"content":"// SPDX-License-Identifier: MIT\r\n\r\npragma solidity ^0.8.0;\r\n\r\n// CAUTION\r\n// This version of SafeMath should only be used with Solidity 0.8 or later,\r\n// because it relies on the compiler\u0027s built in overflow checks.\r\n\r\n/**\r\n * @dev Wrappers over Solidity\u0027s arithmetic operations.\r\n *\r\n * NOTE: `SafeMath` is no longer needed starting with Solidity 0.8. The compiler\r\n * now has built in overflow checking.\r\n */\r\nlibrary SafeMath {\r\n    /**\r\n     * @dev Returns the addition of two unsigned integers, with an overflow flag.\r\n     *\r\n     * _Available since v3.4._\r\n     */\r\n    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {\r\n        unchecked {\r\n            uint256 c = a + b;\r\n            if (c \u003c a) return (false, 0);\r\n            return (true, c);\r\n        }\r\n    }\r\n\r\n    /**\r\n     * @dev Returns the substraction of two unsigned integers, with an overflow flag.\r\n     *\r\n     * _Available since v3.4._\r\n     */\r\n    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {\r\n        unchecked {\r\n            if (b \u003e a) return (false, 0);\r\n            return (true, a - b);\r\n        }\r\n    }\r\n\r\n    /**\r\n     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.\r\n     *\r\n     * _Available since v3.4._\r\n     */\r\n    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {\r\n        unchecked {\r\n            // Gas optimization: this is cheaper than requiring \u0027a\u0027 not being zero, but the\r\n            // benefit is lost if \u0027b\u0027 is also tested.\r\n            // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522\r\n            if (a == 0) return (true, 0);\r\n            uint256 c = a * b;\r\n            if (c / a != b) return (false, 0);\r\n            return (true, c);\r\n        }\r\n    }\r\n\r\n    /**\r\n     * @dev Returns the division of two unsigned integers, with a division by zero flag.\r\n     *\r\n     * _Available since v3.4._\r\n     */\r\n    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {\r\n        unchecked {\r\n            if (b == 0) return (false, 0);\r\n            return (true, a / b);\r\n        }\r\n    }\r\n\r\n    /**\r\n     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.\r\n     *\r\n     * _Available since v3.4._\r\n     */\r\n    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {\r\n        unchecked {\r\n            if (b == 0) return (false, 0);\r\n            return (true, a % b);\r\n        }\r\n    }\r\n\r\n    /**\r\n     * @dev Returns the addition of two unsigned integers, reverting on\r\n     * overflow.\r\n     *\r\n     * Counterpart to Solidity\u0027s `+` operator.\r\n     *\r\n     * Requirements:\r\n     *\r\n     * - Addition cannot overflow.\r\n     */\r\n    function add(uint256 a, uint256 b) internal pure returns (uint256) {\r\n        return a + b;\r\n    }\r\n\r\n    /**\r\n     * @dev Returns the subtraction of two unsigned integers, reverting on\r\n     * overflow (when the result is negative).\r\n     *\r\n     * Counterpart to Solidity\u0027s `-` operator.\r\n     *\r\n     * Requirements:\r\n     *\r\n     * - Subtraction cannot overflow.\r\n     */\r\n    function sub(uint256 a, uint256 b) internal pure returns (uint256) {\r\n        return a - b;\r\n    }\r\n\r\n    /**\r\n     * @dev Returns the multiplication of two unsigned integers, reverting on\r\n     * overflow.\r\n     *\r\n     * Counterpart to Solidity\u0027s `*` operator.\r\n     *\r\n     * Requirements:\r\n     *\r\n     * - Multiplication cannot overflow.\r\n     */\r\n    function mul(uint256 a, uint256 b) internal pure returns (uint256) {\r\n        return a * b;\r\n    }\r\n\r\n    /**\r\n     * @dev Returns the integer division of two unsigned integers, reverting on\r\n     * division by zero. The result is rounded towards zero.\r\n     *\r\n     * Counterpart to Solidity\u0027s `/` operator.\r\n     *\r\n     * Requirements:\r\n     *\r\n     * - The divisor cannot be zero.\r\n     */\r\n    function div(uint256 a, uint256 b) internal pure returns (uint256) {\r\n        return a / b;\r\n    }\r\n\r\n    /**\r\n     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),\r\n     * reverting when dividing by zero.\r\n     *\r\n     * Counterpart to Solidity\u0027s `%` operator. This function uses a `revert`\r\n     * opcode (which leaves remaining gas untouched) while Solidity uses an\r\n     * invalid opcode to revert (consuming all remaining gas).\r\n     *\r\n     * Requirements:\r\n     *\r\n     * - The divisor cannot be zero.\r\n     */\r\n    function mod(uint256 a, uint256 b) internal pure returns (uint256) {\r\n        return a % b;\r\n    }\r\n\r\n    /**\r\n     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on\r\n     * overflow (when the result is negative).\r\n     *\r\n     * CAUTION: This function is deprecated because it requires allocating memory for the error\r\n     * message unnecessarily. For custom revert reasons use {trySub}.\r\n     *\r\n     * Counterpart to Solidity\u0027s `-` operator.\r\n     *\r\n     * Requirements:\r\n     *\r\n     * - Subtraction cannot overflow.\r\n     */\r\n    function sub(\r\n        uint256 a,\r\n        uint256 b,\r\n        string memory errorMessage\r\n    ) internal pure returns (uint256) {\r\n        unchecked {\r\n            require(b \u003c= a, errorMessage);\r\n            return a - b;\r\n        }\r\n    }\r\n\r\n    /**\r\n     * @dev Returns the integer division of two unsigned integers, reverting with custom message on\r\n     * division by zero. The result is rounded towards zero.\r\n     *\r\n     * Counterpart to Solidity\u0027s `/` operator. Note: this function uses a\r\n     * `revert` opcode (which leaves remaining gas untouched) while Solidity\r\n     * uses an invalid opcode to revert (consuming all remaining gas).\r\n     *\r\n     * Requirements:\r\n     *\r\n     * - The divisor cannot be zero.\r\n     */\r\n    function div(\r\n        uint256 a,\r\n        uint256 b,\r\n        string memory errorMessage\r\n    ) internal pure returns (uint256) {\r\n        unchecked {\r\n            require(b \u003e 0, errorMessage);\r\n            return a / b;\r\n        }\r\n    }\r\n\r\n    /**\r\n     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),\r\n     * reverting with custom message when dividing by zero.\r\n     *\r\n     * CAUTION: This function is deprecated because it requires allocating memory for the error\r\n     * message unnecessarily. For custom revert reasons use {tryMod}.\r\n     *\r\n     * Counterpart to Solidity\u0027s `%` operator. This function uses a `revert`\r\n     * opcode (which leaves remaining gas untouched) while Solidity uses an\r\n     * invalid opcode to revert (consuming all remaining gas).\r\n     *\r\n     * Requirements:\r\n     *\r\n     * - The divisor cannot be zero.\r\n     */\r\n    function mod(\r\n        uint256 a,\r\n        uint256 b,\r\n        string memory errorMessage\r\n    ) internal pure returns (uint256) {\r\n        unchecked {\r\n            require(b \u003e 0, errorMessage);\r\n            return a % b;\r\n        }\r\n    }\r\n}\r\n\r\n"},"Strings.sol":{"content":"// SPDX-License-Identifier: MIT\r\n\r\npragma solidity ^0.8.0;\r\n\r\n/**\r\n * @dev String operations.\r\n */\r\nlibrary Strings {\r\n    bytes16 private constant _HEX_SYMBOLS = \"0123456789abcdef\";\r\n\r\n    /**\r\n     * @dev Converts a `uint256` to its ASCII `string` decimal representation.\r\n     */\r\n    function toString(uint256 value) internal pure returns (string memory) {\r\n        // Inspired by OraclizeAPI\u0027s implementation - MIT licence\r\n        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\r\n\r\n        if (value == 0) {\r\n            return \"0\";\r\n        }\r\n        uint256 temp = value;\r\n        uint256 digits;\r\n        while (temp != 0) {\r\n            digits++;\r\n            temp /= 10;\r\n        }\r\n        bytes memory buffer = new bytes(digits);\r\n        while (value != 0) {\r\n            digits -= 1;\r\n            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\r\n            value /= 10;\r\n        }\r\n        return string(buffer);\r\n    }\r\n\r\n    /**\r\n     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.\r\n     */\r\n    function toHexString(uint256 value) internal pure returns (string memory) {\r\n        if (value == 0) {\r\n            return \"0x00\";\r\n        }\r\n        uint256 temp = value;\r\n        uint256 length = 0;\r\n        while (temp != 0) {\r\n            length++;\r\n            temp \u003e\u003e= 8;\r\n        }\r\n        return toHexString(value, length);\r\n    }\r\n\r\n    /**\r\n     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.\r\n     */\r\n    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {\r\n        bytes memory buffer = new bytes(2 * length + 2);\r\n        buffer[0] = \"0\";\r\n        buffer[1] = \"x\";\r\n        for (uint256 i = 2 * length + 1; i \u003e 1; --i) {\r\n            buffer[i] = _HEX_SYMBOLS[value \u0026 0xf];\r\n            value \u003e\u003e= 4;\r\n        }\r\n        require(value == 0, \"Strings: hex length insufficient\");\r\n        return string(buffer);\r\n    }\r\n}"}}