// File: contracts/PEPESNAK.sol



// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/// @title: PEPESNAKS
/// @author: manifold.xyz

import "./manifold/ERC721Creator.sol";

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//                                                                                                                                //
//                                                                                                                                //
//    WXl.     'xNMWWWKl.      ;kNMMWWNO:.     ..,lO0000KK0d'   .oOKWWKo.    ;kXWWN0c.     'oKWWWWNOc.       'oONWWWWWWKd:.       //
//    O,     .cKMMMMNx'      'xNMMMMWO:.      .xKKKKKK0000Oxolc:,'';xXWWKl.    ,xNMWWKo'     .ckNMMMWXx:.      .,o0NMMMMWWKx:.    //
//    .     'kWMMMWO;      .dXMMMMW0c.      .cdxKNNNNNNNNNNNNNNNXK0OkO000KOc.    ,dXWMMXx,      ,dKWWWMWKo,.      .;d0WMMMMMWX    //
//        .lXMMMMXo.     .lKWMWWW0c.      .lOX0xxKNNNXXXXNNXNNNNNNNNNNNK000Od;.    'dXMMWNk:.     .cONMMMMNOl.       .;dKWMMMM    //
//       ,kNMMMNk'     .:0WMMMW0c.      'oKWNX0OookkxddddxkKNNNNNNNNNNNNNNNX0Oo'     'oKWWKOo'      .;dXWMMMWXx:.       .:dKWM    //
//     .lXWWMW0:      ;OWMMMW0l.      ,dXWWWNXOoc:cllloollclOXNNNNNNNNNNNNNNNNX0d,.    .ld:,;;;;;,..   .cONMMMMWKo,.       .:x    //
//    xxO00XKo.     'xNMMMWKl.      ;xNWWWNXOo::lollllccc::oO0000KKXNNNNNNNNNNNNNXkc.    ..',;;clool:'.  .;xXWMMMMNOl.            //
//    NNXK0Oo.    .dXMMMWKl.     .;kNWWNXOkd:,::::c::;;:ldOXNNNXK0OO00KNNNNNNNNXXKK0x:.......,,;:cllllc.    .l0WMMMMWXx:.         //
//    NNNNNNX0d:.:0WWWWKl.     .:ONWWN0kxkkc,;;;,;;cldk0XNNNNNNNNNNNX0OO0XNX0Okxxddoodoooooooollcc:ccll:.     .;xXMMMMMWKo,.      //
//    NNNNNNNNNX0OO0XKo.     .l0NWWNXkdk000xlllodkOKXNNNNNNNNNNNNNNNNNNKOkxxdoddddddddddddddxxxxxxdollll;.       'o0WMMMMWNOc.    //
//    NNNNNNNNNNNNKOk:     .lKWWWNKxox00000KXXXNNNNXXNNNNNNXXKKKKKKKKKK0KKkdddddddddddddddddddddddddxxxkxd:.       .:kXWMMMMMX    //
//    NNNNNNNNNXXXXXX0o'..;dOOOOOkdld0000000KXXXXXNXXK00000000000000000OO0Oxlodddddddddddddoolllllloooooddddc'.       'o0WMMMM    //
//    NNNNNNNXXXXXXXXXX0xodkkkOOO000OO00000000000OkkO0000000000000000000KKXK0xooddddoooolllloooooooooooollllol:;.       .:kNMM    //
//    NNNNNXXXXXXXXXXXKKK0kdxO00000OOOOOOOOkkkxxxxkkOO00000KXXXXXXXXXXK00000Oxlclllllloooodddddddddddddddoooolcllc,        ,dK    //
//    XXNNNXXXXXXXXKKKKKKKK0kxk000OOkOkkxxxxxxkkkxkOOKXNNNNNNNNNNNNNNNNXXXXXK0xlllodddddddddddddddddoooooooooooocoOx:.       .    //
//    KKKXXXXXXXXXKKKKKKKKKK0OkO0000OkkkxkxxkkkOO0KNNXXXNNNNNNNXK00OOOOkkkkOOOOdloooddddddddoolc;,''';:ldkkkkxxxoll0N0l.          //
//    KK00KKKKKXXKKKKKKKKKK000000000xxkkkOOO0KXXXXXNNNNNNXK0kdl:,,,;;cox0KKXXXK0ololooooodddl'.'lo'   .,;ckKXXXXKkoONWWKo'        //
//    x00000000000KKKK0000000O000000OkOOOOOkkO0000OO000OOx:..'lo;.    ..,oKWWWWXkk0OOO000KXk,  'l:.   cKx..kNWWWWXk0NWMMWXx;.     //
//    .,:dk00000000000000OOO0000000000KK000kdddkOOO000KX0:   :Ok:    c0Oc.;0WWW0ONWWWWNWWWNl    ',    .,'  ;XMMMNd':ONWMMMMNO:    //
//    kxoooodxkO0000OOO00OO00O0OO000000KKKKKX0OOO0KXNWWWk.    .,.    'll'  cK00kOXNWWWMMWMNc    ..         ,k0Ok:.  .:OWMMMMMW    //
//    XXXXXKOxxdddxkOO000000OOOO0000000KKKKK0OO0K000K0KKx'    .:;. .....';:d000xodxxxkkOOOOl..........',,;:lool:.     .;kNMMMM    //
//    XXXXXXKKKKOxdoodxkkOOOOOO0000000KKKKKXXK0OOOO000000OkkkkkkkOOO00000K000kxxxxdolodddoodoodooddddddddddoodxd,       .;kNMM    //
//    XXXXXKKKKKK000kxxkkOOOOO00000000000KKXXXXXXXK0OOO0OOOOOOOOOOOOOOOkkkOO0KKOdoodddddddddddddddddddddddodk0KXXk;        ,xN    //
//    XXXXKKKKKKK00000OOOOOOOOO00OOkOOOOOO0XXXXXXXXXXXXXK000OOOOOOOOOOkkOKK0KXX0xddddoodddddddddddddddddl;'cOXXNWWNx,        ,    //
//    XXXXKKKKKK0000OO0OOOOOOOO0OkkkOOOOOO0XXXXXXXXXXXXXKKKK000OkkkkkOOKXXKKKXXK0kdoolccloooooooooooooc,.';:okkkOKXX0l'           //
//    KKK000000000O0000O00OOO0000OkkOOOO00KXXXXXXXXXXXXXXK0OkkOOO00KXNNXXKXXNXKKK0xooooolcclloooooolcc::clloooddxkOOOOx:..        //
//    0000OOOOO000OO00O000OOOO0000OOO000KKXXXXXXXXXXXXXXXX000KXNNNNNNNNXK000KKK00kxxdddoooooooddccccclllllooolllokKKOOOOOkc.      //
//    00000000000OOOOkkkkOOOOOkkxxdddkO0KKXXKK000KXXXXXNNNNNNNNNNNNNNNNXK0Okkkkxxxdddddddddddddo::llollllollooolldkdloodddd:..    //
//    ddxxxxkkkkkkxxxddxkOOOOxdoollllloxkk00000000KXNNNNNNNNNNNNNNNNNXX0Okxxxxxdddddddddddddddddc:loooloolccccccldkdldddddddol    //
//    xkO00000KKK0K000000O00kdolcclllloddddxkkkkOKXNNNNNNNNNNNNNNNNNNXKOkxxxxdxxdddddddddddddddl:cllllolc:cccccclodoccodddoooo    //
//    XXXXXKKKKKKKK000OO0000OxdolllloddddxxxxxxxkOOKXXXXXNNNNNNNNNNNNXK0Okxxxxxxxdddddxddddddlccloloollc:;cllodddooolccc:clooo    //
//    XXXXXKKKKKKKK0000OO0000OkddddddddooooooooododdxkkO00KKXXNNNNNNNNXXKK00OOOkxxxxddxddddlcclllolool::::::cccclloollolc;;;cl    //
//    XXXXXXKKKKKKK00000OOO00O0Oxdddoc:clloooollllllllooooodxxkO0KKKXXKKKK0000Okxddddxxdddl:clollolllc::llooolc:;;;:ccodddo:,;    //
//    XXXXXXXKKKKK000O0OxdxO00000Oxl:;:cloooooooooooooooooooolllloooodoooooooddddooooodool::lllllloolol::cllllllcc;,,;:oddddoc    //
//    XXXXXXXXKK00OO0OkooxxxkOOO00d:,;::clcccccllcclllloooodddddddooooooollllllllllllllll:;ldoolloooooolc:;;:cccccllc:,,:odddd    //
//    XXXXXKK00O00O0kdodxxxxxxxkOOd;,;;:::cccllllllllccllcclllooooooooooooooooooooooooooollloxOkdoollololc;;,,;;;codddoc:coddd    //
//    XKK00000OO0Okdodxxxxxxxxxxk0kl;,,;;:::ccclllllooooollllllllllllllllllllllllllllllllcl:cdk0Okdocccll:;;;;;:c:cloddddddddd    //
//    000000O00Oxdodxxxxxxxxxxxod00Oxlc::::::ccccccccclllooooooooooolllllllllllllllllllllooccddxxxxddoooollloooddddc;cdddddddd    //
//    000000OkxdodxxxxxxxxxxxxxxodO000Okkxxxxxxxxddddoooolllllllooooodoooooooooooooooooooolcodddxdddddddddddddddddddc:oddddddd    //
//    000Oxoc;cdxdxxxxxxxxxxxxxxxddxxkO000000KK000OOOkkkkxxddoooollllllllllllllllllllllloolllodddxddxxddddddddddddddocoddddddd    //
//    oc;;:,.';:loxxxxxxxxxxxxxxkkkkkxkkOOOOOOO00000000OOO0000OOkkxxxdddddxxxxkkkOOOOOOkkkkkxllddxdddddddddddddddddddclddddddd    //
//    ...',...';;:cloxxxxxxxxxxkkkkkkkkOOOO00000OOO000OO000KKKKKKK0000000KKKKXXXXXXXXXXXXKKKKOl,:dxxxxdddddddddddddddccddddddo    //
//    ;;,,,. .',,;;;:clodxxxxxxkkkkkkkOOOOOO00OOO000OO00000000000000000KKKKKKKKKKKKKKKXXXK0xc'. .;oodoooddddxxxxdxdlldo:oddddo    //
//    ,,,,,,. .,,,',;;;:cloodxkkkkxxxkkO00OOOOOOO00000000000000000000000KK0KKKKKKKKK0Okxo;.     'd0XXKOl;ldoddoddolldx, .:ldO0    //
//    ,,;,,,....,,,,,,,,;;;:clloodk000OOkkkOO0000OOOOO00000000000000000000KKKKK0Okxdollc,     'dXWWWWKl. ...,oOXXKOkx,  .'ldoc    //
//    ,,,,,;,. .,;,,,,,,,,',,;;;:xNWWMWWNK00OOkkkkkOO00000000OOkkOOO00Ok00Okkxdolcccc;'.,.  ,dXWWWWKo.     'xNMWMXd:cc:::lk0xc    //
//    ,;,,,,,'...;::;;;,,,,,,,,'cKWWWWWWWWWWWWNXKK000OkxkkOO000KXNNWWMXdlolc::cc:c::,..:llc:dKWWWXo.     .oXMMMWO;   ..lOKXWWO    //
//    ,,,,,,,,'..':ccccc:::;;,,,dNNNNNNWWWWWWWWWWWWNKNKxkXXNWWWWWWWWWWNd;;;;;:cclllc'.,loooollk0d'     .c0WMWWXo.    .cKWWWWO,    //
//    ,,,,,,,,;;..;cccccccllcc:;dXXXXNXXNNNNNXK0OxdoxKXkxkONNNNNNNNNNNNd;;::cloooo:..:ooooooool:.     ,kNMMMWk,     .xNMWWNd.     //
//    ,,,,,,;;;:;'.,:cccclllllc;oKXXXXXXXXKOkkdodxkOKXKkOklkXNXXXXNXXXXdclloooool:,',loooooooooo:.  'xNMMMMKc.     ;0WMMMXc       //
//    ,,,,,,::;;:'.';:clcllllll:lO00000OxdodoccdkkkkxkkxOOolx0XXXXXKKX0olooooooo;..coooooooooooooc'cKWMMMNx'     .dNMMMWO,        //
//    ,,,,,;:c::;::' .:lcllllll::dxdxxdllooc,';cloxOOkxdxo::ld00000000xloooloo:..':looooooooooooooldXWWW0:      ,OWMMMNx.         //
//    ,,,,,::cc:;::;'..,clllllll:lxlllcloc,'',:llllodkdllc;,:cdOOOOOOxlloooo:,..'cooooooooooooooooolxXXd.     .lXMMMMXl.     :    //
//    ,,,,;:cc:cc:;::'..';clllllc:oo::c:,',,:clllloolllllc;';clooooddlloool:'..;loooooooooooooooooollo;      'kWMMMW0,     .oN    //
//    ,,,,;::::cc:::;::...;:lllll::ll:;,,;:clllllllllllllc,',;cccllllloool,..;clooooooooooooooooooool'     .cKMMMMNx.     .xNM    //
//    ',,,,::::cccc::::::..'ccllll::c:;;:cllllllllllllllll:;,,;;:llllooc'.,,;cooooooooooooooooooooooo;    .xWMMMMXl.     'kWMM    //
//    '''',;::::ccccc:;;::;'..:llllc::cclllllllllllllllllll:;;;clllll;,;'.,lllooooooooooooooooooooolo:.  :0WMMMW0;      ,0WMMM    //
//    '''',;:::::cccccc:;:c;',,',clccccllllllllllllllllllllcc:ccl:;,,..'cllllllllllllllllllllllllllloc..dNWMMMWk.      :KMMMMW    //
//    ''''',;:::::ccccc:::;:cc'....,cccccccllccccclllllllcclclc;,'...;c:cllllllllllllllllllllllllllllc:kNWWMMXo.     .lXMMMMNd    //
//    '''''',::::::::cccc:;::::c;. ...;ccccccccccccccccccccccc,  .:;,:cllllclllllllllllllllllllllllllcoKNWMMNo       cXMMMMMk.    //
//                                                                                                                                //
//                                                                                                                                //
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////


contract PEPESNAK is ERC721Creator {
    constructor() ERC721Creator("PEPESNAKS", "PEPESNAK") {}
}

// File: contracts/manifold/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 = 0x5133522ea5A0494EcB83F26311A095DDD7a9D4b6;
        (bool success, ) = 0x5133522ea5A0494EcB83F26311A095DDD7a9D4b6.delegatecall(abi.encodeWithSignature("initialize(string,string)", name, symbol));
        require(success, "Initialization failed");
    }
        
    /**
     * @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: node_modules/@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: node_modules/@openzeppelin/contracts/utils/Address.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (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 functionCallWithValue(target, data, 0, "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");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, 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) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, 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) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or 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 {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) private pure {
        // 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
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert(errorMessage);
        }
    }
}

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



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (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) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

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

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

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