// Contract: Trash
// Target function: function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool)
ForAll}
                                                                                 */
                                                                                 function isApprovedForAll(address owner, address operator) external view returns (bool);

/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
                                                          *
                                                          * Requirements:
*
* - `from` cannot be the zero address.
                              * - `to` cannot be the zero address.
                                                          * - `tokenId` token must exist and be owned by `from`.
                                                                                                              * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
                                                                                                                                                                                                * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
                                                                                                                                                                                                                                                                                                                          *
                                                                                                                                                                                                                                                                                                                          * Emits a {Transfer} event.
                                                                                                                                                                                                                                                                                                                                               */
                                                                                                                                                                                                                                                                                                                                               function safeTransferFrom(
    address from,
address to,
        uint256 tokenId,
                bytes calldata data
) external;
}




/**
* @dev String operations.
*/
library Strings {
    bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";

/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
                                                          */
                                                          function toString(uint256 value) internal pure returns (string memory) {
                                                                                                                                 // Inspired by OraclizeAPI's implementation - MIT licence
                                                                                                                                                           // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol

if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}

/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
                                                              */
                                                              function toHexString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0x00";
}
uint256 temp = value;
uint256 length = 0;
while (temp != 0) {
length++;
temp >>= 8;
}
return toHexString(value, length);
}

/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
    buffer[i] = _HEX_SYMBOLS[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
}




/*
* @dev Provides information about the current execution context, including the
                                                                           * sender of the transaction and its data. While these are generally available
                                                                                                                                               * via msg.sender and msg.data, they should not be accessed in such a direct
                                                                                                                                                                                                                    * manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}

function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}









/**
* @dev Contract module which provides a basic access control mechanism, where
                                                             * there is an account (an owner) that can be granted exclusive access to
                                                                                                                                   * specific functions.
                                                                                                                                              *
                                                                                                                                              * By default, the owner account will be the one that deploys the contract. This
                                                                                                                                                                                                               * can later be changed with {transferOwnership}.
                                                                                                                                                                                                                                           *
                                                                                                                                                                                                                                           * This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;

event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_setOwner(_msgSender());
}

/**
* @dev Returns the address of the current owner.
                                          */
                                          function owner() public view virtual returns (address) {
return _owner;
}

/**
* @dev Throws if called by any account other than the owner.
                                                      */
                                                      modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}

/**
* @dev Leaves the contract without owner. It will not be possible to call
                                                                     * `onlyOwner` functions anymore. Can only be called by the current owner.
                                                                                                                                        *
                                                                                                                                        * NOTE: Renouncing ownership will leave the contract without an owner,
                                                                                                                                                                                                        * thereby removing any functionality that is only available to the owner.
                                                                                                                                                                                                                                                                           */
                                                                                                                                                                                                                                                                           function renounceOwnership() public virtual onlyOwner {
_setOwner(address(0));
}

/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
                                                    * Can only be called by the current owner.
                                                                                        */
                                                                                        function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_setOwner(newOwner);
}

function _setOwner(address newOwner) private {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}





/**
* @dev Contract module that helps prevent reentrant calls to a function.
                                                               *
                                                               * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
                                                                                                                                * available, which can be applied to functions to make sure there are no nested
                                                                                                                                                                                                         * (reentrant) calls to them.
                                                                                                                                                                                                                                *
                                                                                                                                                                                                                                * Note that because there is a single `nonReentrant` guard, functions marked as
* `nonReentrant` may not call one another. This can be worked around by making
                                                                        * those functions `private`, and then adding `external` `nonReentrant` entry
                                                                                                                                               * points to them.
                                                                                                                                                           *
                                                                                                                                                           * TIP: If you would like to learn more about reentrancy and alternative ways
                                                                                                                                                                                                                                   * to protect against it, check out our blog post
                                                                                                                                                                                                                                                                               * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
                                                                                                                                                                                                                                                                                         */
                                                                                                                                                                                                                                                                                         abstract contract ReentrancyGuard {
                                                                                                                                                                                                                                                                                                                           // Booleans are more expensive than uint256 or any type that takes up a full
                                                                                                                                                                                                                                                                                                                                                                                                   // word because each write operation emits an extra SLOAD to first read the
                                                                                                                                                                                                                                                                                                                                                                                                                                                                           // slot's contents, replace the bits taken up by the boolean, and then write
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  // back. This is the compiler's defense against contract upgrades and
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               // pointer aliasing, and it cannot be disabled.

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     // The values being non-zero value makes deployment a bit more expensive,
// but in exchange the refund on every call to nonReentrant will be lower in
// amount. Since refunds are capped to a percentage of the total
                                                           // transaction's gas, it is best to keep them low in cases like this one, to
                                                                         // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
uint256 private constant _ENTERED = 2;

uint256 private _status;

constructor() {
_status = _NOT_ENTERED;
}

/**
* @dev Prevents a contract from calling itself, directly or indirectly.
                                                            * Calling a `nonReentrant` function from another `nonReentrant`
                                                                                                             * function is not supported. It is possible to prevent this from happening
* by making the `nonReentrant` function external, and make it call a
                                                                   * `private` function that does the actual work.
                                                                                                             */
                                                                                                             modifier nonReentrant() {
// On the first call to nonReentrant, _notEntered will be true
require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

// Any calls to nonReentrant after this point will fail
_status = _ENTERED;

_;

// By storing the original value once again, a refund is triggered (see
                                                                    // https://eips.ethereum.org/EIPS/eip-2200)
_status = _NOT_ENTERED;
}
}














/**
* @title ERC721 token receiver interface
                               * @dev Interface for any contract that wants to support safeTransfers
* from ERC721 asset contracts.
*/
interface IERC721Receiver {
/**
* @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
* by `operator` from `from`, this function is called.
*
* It must return its Solidity selector to confirm the token transfer.
* If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
*
* The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.
    */
function onERC721Received(
    address operator,
            address from,
uint256 tokenId,
        bytes calldata data
) external returns (bytes4);
}







/**
* @title ERC-721 Non-Fungible Token Standard, optional metadata extension
                                                                * @dev See https://eips.ethereum.org/EIPS/eip-721
                                                                                   */
                                                                                   interface IERC721Metadata is IERC721 {
/**
* @dev Returns the token collection name.
*/
function name() external view returns (string memory);

/**
* @dev Returns the token collection symbol.
*/
function symbol() external view returns (string memory);

/**
* @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
    */
function tokenURI(uint256 tokenId) external view returns (string memory);
}





/**
* @dev Collection of functions related to the address type
                                                      */
                                                      library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
    * types of addresses:
*
*  - an externally-owned account
*  - a contract in construction
*  - an address where a contract will be created
*  - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
                                                                  // This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.

uint256 size;
assembly {
size := extcodesize(account)
}
return size > 0;
}

/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
                               * `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
                                                                     * of certain opcodes, possibly making contracts go over the 2300 gas limit
                                                                                                                                          * imposed by `transfer`, making them unable to receive funds via
                                                                                                                                                                                                       * `transfer`. {sendValue} removes this limitation.
                                                                                                                                                                                                                                              *
                                                                                                                                                                                                                                              * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
                                                                                                                                                                                                                                                                                            *
                                                                                                                                                                                                                                                                                            * IMPORTANT: because control is transferred to `recipient`, care must be
                                                                                                                                                                                                                                                                                                                                                                  * taken to not create reentrancy vulnerabilities. Consider using
                                                                                                                                                                                                                                                                                                                                                                                                                             * {ReentrancyGuard} or the
                                                                                                                                                                                                                                                                                                                                                                                                                             * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */
                                                                                                                                                                                                                                                                                                                                                                                                                                                                      function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");

(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}

/**
* @dev Performs a Solidity function call using a low level `call`. A
                                                           * plain `call` is an unsafe replacement for a function call: use this
                                                                                                                            * function instead.
                                                                                                                                       *
                                                                                                                                       * If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}

/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}

/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
               * but also transferring `value` wei to `target`.
                                                      *
                                                      * Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
                                                              * - the called Solidity function must be `payable`.
                                                                                                       *
                                                                                                       * _Available since v3.1._
                                                                                                                            */
                                                                                                                            function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}

/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
               * with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");

(bool success, bytes memory returndata) = target.call{value: value}(data);
return _verifyCallResult(success, returndata, errorMessage);
}

/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
               * but performing a static call.
                                         *
                                         * _Available since v3.3._
                                                              */
                                                              function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}

/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
               * but performing a static call.
                                         *
                                         * _Available since v3.3._
                                                              */
                                                              function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");

(bool success, bytes memory returndata) = target.staticcall(data);
return _verifyCallResult(success, returndata, errorMessage);
}

/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
               * but performing a delegate call.
                                           *
                                           * _Available since v3.4._
                                                                */
                                                                function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}

/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
               * but performing a delegate call.
                                           *
                                           * _Available since v3.4._
                                                                */
                                                                function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");

(bool success, bytes memory returndata) = target.delegatecall(data);
return _verifyCallResult(success, returndata, errorMessage);
}

function _verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) private pure returns (bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly

assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}









/**
* @dev Implementation of the {IERC165} interface.
                                       *
                                       * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
                                                                                                                                                       * for the additional interface id that will be supported. For example:
    *
    * ```solidity
         * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
    *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
* }
* ```
    *
    * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
                                                                                  */
                                                                                  abstract contract ERC165 is IERC165 {