// File: contracts/MDC.sol




// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/// @title: Cx01 - A Glitch By Medici Art$
/// @author: manifold.xyz

import "./ERC721Creator.sol";

//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          //
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//     /$$$$$$$$/$$                     /$$                      /$$$$$$  /$$$$$$  /$$           /$$           /$$                                                 /$$      /$$$$$$                         /$$$$$$$$       /$$                       /$$/$$$$$$                            /$$            /$$   /$$     /$$             /$$   /$$ /$$                           /$$   /$$                  /$$$$$$$$        /$$                                                                                                                                                                                                                                                                                                            //
//    | $$_____/__/                    | $$                     /$$__  $$/$$__  $$|__/          |__/          | $$                                                | $$     /$$$_  $$                       |__  $$__/      | $$                      /$$/$$__  $$                          /$$/           |__/  | $$    | $$            | $$  /$$/|__/                          | $$  /$$/                 |__  $$__/       | $$                                                                                                                                                                                                                                                                                                            //
//    | $$      /$$  /$$$$$$  /$$$$$$$/$$$$$$          /$$$$$$ | $$  \__/ $$  \__/ /$$  /$$$$$$$ /$$  /$$$$$$ | $$        /$$$$$$$  /$$$$$$  /$$   /$$  /$$$$$$  /$$$$$$  | $$$$\ $$        /$$$$$$   /$$$$$$ | $$         | $$$$$$$  /$$   /$$     /$$/ $$  \__/$$$$$$  /$$$$$$/$$$$     /$$/$$  /$$  /$$ /$$ /$$$$$$  | $$$$$$$       | $$ /$$/  /$$ /$$$$$$$   /$$$$$$       | $$ /$$/  /$$   /$$ /$$$$$$$ | $$  /$$$$$$ | $$                                                                                                                                                                                                                                                                                                            //
//    | $$$$$  | $$ /$$__  $$/$$_____/_  $$_/         /$$__  $$| $$$$   | $$$$    | $$ /$$_____/| $$ |____  $$| $$       /$$_____/ /$$__  $$| $$  | $$ /$$__  $$|_  $$_/  | $$ $$ $$       |____  $$ /$$__  $$| $$         | $$__  $$| $$  | $$    /$$/| $$$$  /$$__  $$| $$_  $$_  $$   /$$/ $$ | $$ | $$| $$|_  $$_/  | $$__  $$      | $$$$$/  | $$| $$__  $$ /$$__  $$      | $$$$$/  | $$  | $$| $$__  $$| $$ |____  $$| $$                                                                                                                                                                                                                                                                                                            //
//    | $$__/  | $$| $$  \__/  $$$$$$  | $$          | $$  \ $$| $$_/   | $$_/    | $$| $$      | $$  /$$$$$$$| $$      | $$      | $$  \__/| $$  | $$| $$  \ $$  | $$    | $$\ $$$$        /$$$$$$$| $$  \__/| $$         | $$  \ $$| $$  | $$   /$$/ | $$_/ | $$  \__/| $$ \ $$ \ $$  /$$/| $$ | $$ | $$| $$  | $$    | $$  \ $$      | $$  $$  | $$| $$  \ $$| $$  \ $$      | $$  $$  | $$  | $$| $$  \ $$| $$  /$$$$$$$|__/                                                                                                                                                                                                                                                                                                            //
//    | $$     | $$| $$      \____  $$ | $$ /$$      | $$  | $$| $$     | $$      | $$| $$      | $$ /$$__  $$| $$      | $$      | $$      | $$  | $$| $$  | $$  | $$ /$$| $$ \ $$$       /$$__  $$| $$      | $$         | $$  | $$| $$  | $$  /$$/  | $$   | $$      | $$ | $$ | $$ /$$/ | $$ | $$ | $$| $$  | $$ /$$| $$  | $$      | $$\  $$ | $$| $$  | $$| $$  | $$      | $$\  $$ | $$  | $$| $$  | $$| $$ /$$__  $$                                                                                                                                                                                                                                                                                                                //
//    | $$     | $$| $$      /$$$$$$$/ |  $$$$/      |  $$$$$$/| $$     | $$      | $$|  $$$$$$$| $$|  $$$$$$$| $$      |  $$$$$$$| $$      |  $$$$$$$| $$$$$$$/  |  $$$$/|  $$$$$$/      |  $$$$$$$| $$      | $$         | $$$$$$$/|  $$$$$$$ /$$/   | $$   | $$      | $$ | $$ | $$/$$/  |  $$$$$/$$$$/| $$  |  $$$$/| $$  | $$      | $$ \  $$| $$| $$  | $$|  $$$$$$$      | $$ \  $$|  $$$$$$/| $$  | $$| $$|  $$$$$$$ /$$                                                                                                                                                                                                                                                                                                            //
//    |__/     |__/|__/     |_______/   \___/         \______/ |__/     |__/      |__/ \_______/|__/ \_______/|__/       \_______/|__/       \____  $$| $$____/    \___/   \______/        \_______/|__/      |__/         |_______/  \____  $$|__/    |__/   |__/      |__/ |__/ |__/__/    \_____/\___/ |__/   \___/  |__/  |__/      |__/  \__/|__/|__/  |__/ \____  $$      |__/  \__/ \______/ |__/  |__/|__/ \_______/|__/                                                                                                                                                                                                                                                                                                            //
//                                                                                                                                           /$$  | $$| $$                                                                            /$$  | $$                                                                                                                  /$$  \ $$                                                                                                                                                                                                                                                                                                                                                                  //
//                                                                                                                                          |  $$$$$$/| $$                                                                           |  $$$$$$/                                                                                                                 |  $$$$$$/                                                                                                                                                                                                                                                                                                                                                                  //
//      /$$$$$$                                                   /$$             /$$     /$$                             /$$                \_____/$$$$$$                                                                    /$$     \____/$$/$$      /$$                 /$$ /$$           /$$                     /$$                       /$$             /$$______/                       /$$                                     /$$         /$$     /$$                       /$$       /$$                           /$$       /$$                                   /$$  /$$$$$$          /$$                      /$$$$$$              /$$           /$$       /$$    /$$     /$$                                                //
//     /$$__  $$                                                 |__/            | $$    |__/                            | $$                     /$$__  $$                                                                  | $$         | $/ $$$    /$$$                | $$|__/          |__/                    | $$                      |__/            | $$                             | $$                                    | $$        | $$    | $$                      | $$      |__/                          | $$      |__/                                  | $$ /$$__  $$        | $$                     /$$__  $$            | $$          | $$      |__/  /$$$$$$  | $$                                                //
//    | $$  \ $$  /$$$$$$   /$$$$$$   /$$$$$$  /$$$$$$   /$$$$$$$ /$$  /$$$$$$  /$$$$$$   /$$  /$$$$$$  /$$$$$$$        /$$$$$$    /$$$$$$       | $$  \__/  /$$$$$$  /$$$$$$$$  /$$$$$$  /$$$$$$/$$$$   /$$$$$$         /$$$$$$$  /$$$$$$|_/| $$$$  /$$$$  /$$$$$$   /$$$$$$$ /$$  /$$$$$$$ /$$       /$$  /$$  /$$| $$$$$$$   /$$$$$$        /$$ /$$$$$$$  /$$$$$$    /$$$$$$  /$$$$$$   /$$$$$$$ /$$   /$$  /$$$$$$$  /$$$$$$   /$$$$$$$       /$$$$$$  | $$$$$$$   /$$$$$$       | $$   /$$ /$$ /$$$$$$$   /$$$$$$       | $$$$$$$  /$$ /$$$$$$/$$$$   /$$$$$$$  /$$$$$$ | $$| $$  \__/       /$$$$$$    /$$$$$$       | $$  \ $$  /$$$$$$  /$$$$$$        | $$$$$$$  /$$ /$$__  $$/$$$$$$    /$$$$$$   /$$$$$$  /$$   /$$              //
//    | $$$$$$$$ /$$__  $$ /$$__  $$ /$$__  $$/$$__  $$ /$$_____/| $$ |____  $$|_  $$_/  | $$ /$$__  $$| $$__  $$      |_  $$_/   /$$__  $$      | $$       /$$__  $$|____ /$$/ /$$__  $$| $$_  $$_  $$ /$$__  $$       /$$__  $$ /$$__  $$  | $$ $$/$$ $$ /$$__  $$ /$$__  $$| $$ /$$_____/| $$      | $$ | $$ | $$| $$__  $$ /$$__  $$      | $$| $$__  $$|_  $$_/   /$$__  $$/$$__  $$ /$$__  $$| $$  | $$ /$$_____/ /$$__  $$ /$$__  $$      |_  $$_/  | $$__  $$ /$$__  $$      | $$  /$$/| $$| $$__  $$ /$$__  $$      | $$__  $$| $$| $$_  $$_  $$ /$$_____/ /$$__  $$| $$| $$$$          |_  $$_/   /$$__  $$      | $$$$$$$$ /$$__  $$|_  $$_/        | $$__  $$| $$| $$  \__/_  $$_/   /$$__  $$ /$$__  $$| $$  | $$              //
//    | $$__  $$| $$  \ $$| $$  \ $$| $$  \__/ $$$$$$$$| $$      | $$  /$$$$$$$  | $$    | $$| $$  \ $$| $$  \ $$        | $$    | $$  \ $$      | $$      | $$  \ $$   /$$$$/ | $$  \ $$| $$ \ $$ \ $$| $$  \ $$      | $$  | $$| $$$$$$$$  | $$  $$$| $$| $$$$$$$$| $$  | $$| $$| $$      | $$      | $$ | $$ | $$| $$  \ $$| $$  \ $$      | $$| $$  \ $$  | $$    | $$  \__/ $$  \ $$| $$  | $$| $$  | $$| $$      | $$$$$$$$| $$  | $$        | $$    | $$  \ $$| $$$$$$$$      | $$$$$$/ | $$| $$  \ $$| $$  \ $$      | $$  \ $$| $$| $$ \ $$ \ $$|  $$$$$$ | $$$$$$$$| $$| $$_/            | $$    | $$  \ $$      | $$__  $$| $$  \__/  | $$          | $$  \ $$| $$|  $$$$$$  | $$    | $$  \ $$| $$  \__/| $$  | $$              //
//    | $$  | $$| $$  | $$| $$  | $$| $$     | $$_____/| $$      | $$ /$$__  $$  | $$ /$$| $$| $$  | $$| $$  | $$        | $$ /$$| $$  | $$      | $$    $$| $$  | $$  /$$__/  | $$  | $$| $$ | $$ | $$| $$  | $$      | $$  | $$| $$_____/  | $$\  $ | $$| $$_____/| $$  | $$| $$| $$      | $$      | $$ | $$ | $$| $$  | $$| $$  | $$      | $$| $$  | $$  | $$ /$$| $$     | $$  | $$| $$  | $$| $$  | $$| $$      | $$_____/| $$  | $$        | $$ /$$| $$  | $$| $$_____/      | $$_  $$ | $$| $$  | $$| $$  | $$      | $$  | $$| $$| $$ | $$ | $$ \____  $$| $$_____/| $$| $$              | $$ /$$| $$  | $$      | $$  | $$| $$        | $$ /$$      | $$  | $$| $$ \____  $$ | $$ /$$| $$  | $$| $$      | $$  | $$              //
//    | $$  | $$| $$$$$$$/| $$$$$$$/| $$     |  $$$$$$$|  $$$$$$$| $$|  $$$$$$$  |  $$$$/| $$|  $$$$$$/| $$  | $$        |  $$$$/|  $$$$$$/      |  $$$$$$/|  $$$$$$/ /$$$$$$$$|  $$$$$$/| $$ | $$ | $$|  $$$$$$/      |  $$$$$$$|  $$$$$$$  | $$ \/  | $$|  $$$$$$$|  $$$$$$$| $$|  $$$$$$$| $$      |  $$$$$/$$$$/| $$  | $$|  $$$$$$/      | $$| $$  | $$  |  $$$$/| $$     |  $$$$$$/|  $$$$$$$|  $$$$$$/|  $$$$$$$|  $$$$$$$|  $$$$$$$        |  $$$$/| $$  | $$|  $$$$$$$      | $$ \  $$| $$| $$  | $$|  $$$$$$$      | $$  | $$| $$| $$ | $$ | $$ /$$$$$$$/|  $$$$$$$| $$| $$              |  $$$$/|  $$$$$$/      | $$  | $$| $$        |  $$$$/      | $$  | $$| $$ /$$  \ $$ |  $$$$/|  $$$$$$/| $$      |  $$$$$$$ /$$          //
//    |__/  |__/| $$____/ | $$____/ |__/      \_______/ \_______/|__/ \_______/   \___/  |__/ \______/ |__/  |__/         \___/   \______/        \______/  \______/ |________/ \______/ |__/ |__/ |__/ \______/        \_______/ \_______/  |__/     |__/ \_______/ \_______/|__/ \_______/|__/       \_____/\___/ |__/  |__/ \______/       |__/|__/  |__/   \___/  |__/      \______/  \_______/ \______/  \_______/ \_______/ \_______/         \___/  |__/  |__/ \_______/      |__/  \__/|__/|__/  |__/ \____  $$      |__/  |__/|__/|__/ |__/ |__/|_______/  \_______/|__/|__/               \___/   \______/       |__/  |__/|__/         \___/        |__/  |__/|__/|  $$$$$$/  \___/   \______/ |__/       \____  $$|__/          //
//              | $$      | $$                                                                                                                                                                                                                                                                                                                                                                                                                                                                                /$$  \ $$                                                                                                                                                       \_  $$_/                               /$$  | $$              //
//              | $$      | $$                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |  $$$$$$/                                                                                                                                                         \__/                                |  $$$$$$/              //
//              |__/      |__/                                                                                                                                                                                                                                                                                                                                                                                                                                                                                \______/                                                                                                                                                                                               \______/               //
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contract MDC is ERC721Creator {
    constructor() ERC721Creator("Cx01 - A Glitch By Medici Art$", "MDC") {}
}

// File: contracts/ERC721Creator.sol




// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/// @author: manifold.xyz

import "@openzeppelin/contracts/proxy/Proxy.sol";
import "@openzeppelin/contracts/utils/Address.sol";
import "@openzeppelin/contracts/utils/StorageSlot.sol";

contract ERC721Creator is Proxy {
    
    constructor(string memory name, string memory symbol) {
        assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1));
        StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = 0xe4E4003afE3765Aca8149a82fc064C0b125B9e5a;
        Address.functionDelegateCall(
            0xe4E4003afE3765Aca8149a82fc064C0b125B9e5a,
            abi.encodeWithSignature("initialize(string,string)", name, symbol)
        );
    }
        
    /**
     * @dev Storage slot with the address of the current implementation.
     * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;

    /**
     * @dev Returns the current implementation address.
     */
     function implementation() public view returns (address) {
        return _implementation();
    }

    function _implementation() internal override view returns (address) {
        return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
    }    

}

// File: @openzeppelin/contracts/proxy/Proxy.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (proxy/Proxy.sol)

pragma solidity ^0.8.0;

/**
 * @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM
 * instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to
 * be specified by overriding the virtual {_implementation} function.
 *
 * Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a
 * different contract through the {_delegate} function.
 *
 * The success and return data of the delegated call will be returned back to the caller of the proxy.
 */
abstract contract Proxy {
    /**
     * @dev Delegates the current call to `implementation`.
     *
     * This function does not return to its internal call site, it will return directly to the external caller.
     */
    function _delegate(address implementation) internal virtual {
        assembly {
            // Copy msg.data. We take full control of memory in this inline assembly
            // block because it will not return to Solidity code. We overwrite the
            // Solidity scratch pad at memory position 0.
            calldatacopy(0, 0, calldatasize())

            // Call the implementation.
            // out and outsize are 0 because we don't know the size yet.
            let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0)

            // Copy the returned data.
            returndatacopy(0, 0, returndatasize())

            switch result
            // delegatecall returns 0 on error.
            case 0 {
                revert(0, returndatasize())
            }
            default {
                return(0, returndatasize())
            }
        }
    }

    /**
     * @dev This is a virtual function that should be overridden so it returns the address to which the fallback function
     * and {_fallback} should delegate.
     */
    function _implementation() internal view virtual returns (address);

    /**
     * @dev Delegates the current call to the address returned by `_implementation()`.
     *
     * This function does not return to its internal call site, it will return directly to the external caller.
     */
    function _fallback() internal virtual {
        _beforeFallback();
        _delegate(_implementation());
    }

    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other
     * function in the contract matches the call data.
     */
    fallback() external payable virtual {
        _fallback();
    }

    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data
     * is empty.
     */
    receive() external payable virtual {
        _fallback();
    }

    /**
     * @dev Hook that is called before falling back to the implementation. Can happen as part of a manual `_fallback`
     * call, or as part of the Solidity `fallback` or `receive` functions.
     *
     * If overridden should call `super._beforeFallback()`.
     */
    function _beforeFallback() internal virtual {}
}

// File: @openzeppelin/contracts/utils/Address.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @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
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 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);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal 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);
            }
        }
    }
}

// File: @openzeppelin/contracts/utils/StorageSlot.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/StorageSlot.sol)

pragma solidity ^0.8.0;

/**
 * @dev Library for reading and writing primitive types to specific storage slots.
 *
 * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.
 * This library helps with reading and writing to such slots without the need for inline assembly.
 *
 * The functions in this library return Slot structs that contain a `value` member that can be used to read or write.
 *
 * Example usage to set ERC1967 implementation slot:
 * ```
 * contract ERC1967 {
 *     bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
 *
 *     function _getImplementation() internal view returns (address) {
 *         return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
 *     }
 *
 *     function _setImplementation(address newImplementation) internal {
 *         require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
 *         StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
 *     }
 * }
 * ```
 *
 * _Available since v4.1 for `address`, `bool`, `bytes32`, and `uint256`._
 */
library StorageSlot {
    struct AddressSlot {
        address value;
    }

    struct BooleanSlot {
        bool value;
    }

    struct Bytes32Slot {
        bytes32 value;
    }

    struct Uint256Slot {
        uint256 value;
    }

    /**
     * @dev Returns an `AddressSlot` with member `value` located at `slot`.
     */
    function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) {
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `BooleanSlot` with member `value` located at `slot`.
     */
    function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) {
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Bytes32Slot` with member `value` located at `slot`.
     */
    function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) {
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Uint256Slot` with member `value` located at `slot`.
     */
    function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) {
        assembly {
            r.slot := slot
        }
    }
}