// File: contracts/MTGM.sol



// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/// @title: MINT GUM
/// @author: manifold.xyz

import "./manifold/ERC721Creator.sol";

//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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//         `                       `            `                      .....                                                    ...+gNNNNNNgJ..                                ....-J-....                      //
//            `                       `            `            ..gMMMMMMMMMMMMNg..                                         ..gMMMMMMMMMMMMMMMMMNa.                        ..MMMMMMMMMMMMMMNg,.                 //
//                `  `  `  `   `           `           `  `  .MMMMMMMMMMMMMMMMMMMMMNa.   `   `  `   `    `    `    `    ` .MMMMMMMMMMMMMMMMMMMMMMMMMa.                   .MMMMMMMMMMMMMMMMMMMMMN,               //
//        `                       `           `           .JMMMMMMMMMMMMMMMMMMMMMMMMMMN,                                .MMMMMMMMMHZuZuZuZuZWMMMMMMMMMm.               .MMMMMMM#9=<:~~?7TWMMMMMMMN,             //
//           `                       `  `        `  `    .MMMMMMMMUZZuuZuZZZZuZZWMMMMMMMN,            `     `         .MMMMMMMMZZZuZZuZuZuZuZZuZUMMMMMMN,  `  `  `  ` .MMMMMM5~~_.._:~::~::(TMMMMMM[  `  `      //
//              `           `              `           .MMMMMMMSZZZuXgNMMNmkuZuZZZZWMMMMMMN.     `       `      `    .MMMMMMHZuZuZZuZuZZuZZuZZZZZZXMMMMMMp           (MMMMM5~_.~~___:~~:~~:~::dMMMMM|           //
//       `         `  `  `     `  `                   .MMMMMMSZuZuXdMMMMMMMMNkuuZuZZuWMMMMMM,                       dMMMMMBuZuZuZuuZuZuZuZudMMMMMMMMMMMMMMp         (MMMMM3~____~:~:~::~::~~~:~JMMMMN           //
//          `                                 `   `  .MMMMMMZZuZuZdMMMMMMMMMMNZZuZuZZZXMMMMMMp      `              dMMMMMSuZuZuZZuZZuZZuZZXMMMMMMMMMMMMMMMM|       .MMMMM3~(fNm+MN;:~~_uNJ((J,:~MMMMM|     `    //
//                                   `  `            MMMMMMZuZZuZuMMMMMMMMMMMMSZZuZuuZZuMMMMMMp                   dMMMMMSuZZuZuZuZZuZuZuuZuXMMMMMMMMMMMMMMMN      .MMMMM5~_.(MMMM5:~::~TMMMMM5~~dMMMM]          //
//             `           `               `        -MMMM#ZuZuZuZZdMMMMMMMMMMMuuZuZZuuZZudMMMMML  `    `  `  `   .MMMMMSZZuZZuZuZuuZuZuZZuZuZZuZZuZZuZZMMMMM[     MMMMM@:~:dMMMMMp~:~:(MMMMMm:~:dMMMM]          //
//       `  `     `  `  `     `  `             `   .MMMMMHuZZuZZuZuWMMMMMMMMMZZuZZuZZuZuZudMMMMM,               .MMMMMHZZuZuZuZZuZZuZZuZuZZuZuZuZuZuZZZMMMMMF   `(MMMM#:~..(T>:7B3:~:~?HB>dMM<:(MMMMM\   `      //
//                                  `              .MMMM#uZuZZuuZuZZZXWHHHXZuuZZuuZuZZuZuZZMMMMMN.              dMMMM#ZuuZuZuZuZuZZuZuZuZuZZuZuZuZuZuuZdMMMM#   .MMMMMC~:~::~:(ggJ-:~:~:~~::~:~(MMMM#           //
//             `                       `  `        dMMMM#ZuZuZuZZuZuZuZuZZuZZuuZuZQgNMMNmkZZMMMMMb   `         .MMMMMZZuZZuZZuZuZuuZuZuZuZuZQMMMMMMMMMMMMMMM#  .MMMMMD:~:~:~:~?MMMMMNaJ~::~~:~:dMMMMF      `    //
//                        `  `   `           `  `  MMMMMHuZuZuZuZZuZuZuZuZuZuZZuQMMMMMMMMMNZXMMMMM,     `  `   dMMMM#ZuZZuZuZuZZuZZuZZuZZuZuMMMMMMMMMMMMMMMMF .MMMMM@:~:~:~:~::~:~?THMB:~:~:~:(MMMMM`   `       //
//        `        `  `                           `MMMMMKZuZZQNNMNNkZuZZuZZuZuZZMMMMMMMMMMM#uMMMMMb           .MMMMMXZuZuZuZuZuZuZZuZuZuZuZZXMMMMMMMMMMMMMMMb.MMMMM@~~:~:~:~:~~:~~:~:~:~:~:~:(MMMMMF            //
//           `                      `              MMMMMHuZqMMMMMMMMMRZuZuZuZuuZMMMMMMMMMMM#ZXMMMMM,          (MMMM#ZuZuZuZuZuZuZuuZuZuZuZuZuuuZuuZuuuXMMMMMMMMMMM5::~::~:~:~::~::~:~:~~:~:~~(MMMM#             //
//              `                      `           dMMMM#ZXMMMMMMMMMMMKZuZuZZZuZdMMMMMMMMMMHuuMMMMMb          MMMMMHuZuZuZuZuZuZZuZZuZZuZuZuZZuZuZuZZudMMMMMMMMM#<:~~:~~:~:~:~~:~~:~:~::~:~:(MMMMM\             //
//       `             `  `  `  `         `  `     -MMMMNZdMMMMMMMMMMM#uZZuZuZZuZVMMMMMMMMSZuZdMMMMN.  `     .MMMMMXuZZuZuZuZuZuZZuZZuZuZZuZZuZZZuZZuXMMMMMMMM#>:~:~::~:~:~:~::~::~:~:~~:~:~+MMMM#        `     //
//          `      `              `            `    MMMMMKXMMMMMMMMMMMSZuZZuZuuZuZuZUWWUZuZuZZZMMMMM|     `  .MMMMNZZuZuZZuZuZuZuZuuZuZZuZuQNNNNNNNNNMMMMMMM8<~:~:~:~~:~:~:~:~~:~~:~:~::~:~:MMMMM%     `        //
//             `                     `              dMMMMNZXMMMMMMMMMSZZuuZuZZuZZuZuuZuZuZuZuuZMMMMMF        .MMMM#ZuZuZuZuZZuZuZuZZuZuZuZZMMMMMMMMMMMMMMM5:~:~:~:~::~:~:~:~:~:~::~:~:~~:~:(MMMMM`              //
//                    `                `            .MMMMMKZuZWHMHWZZZuZZuZZuZZuZuZZuZZuZuZZuZudMMMMN....... (MMMM#uZuZuZuZuZuZZuZZuZuZuZuZMMMMMMMMMMMMM@~:~:~((ggJ~:~::~:~:~:~:~~:~:~:~:~~(MMMMN               //
//        `        `     `  `    `          `   `    dMMMMNZZuZuZZuuZuZuZZQgMMMMNmZuZuZZXQgNNMMMMMMMMMMMMMMMMMMMMMNNNmkZuZZuZZuZuZuZuZuZuZZuuZuZuZXMMMMM<:~~:(MMMMMr~:~~:~:~:~:~::~:~:~:~::(MMMMM.              //
//           `                                        MMMMM#uZuZuZZuZuZuQMMMMMMMMMNmQgMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMNmkZuZuZZuZuZuZZuZuZZuZuZudMMMMMx~:(jMMMMMMt:~:~:((-:~:~:~:~:~:~:~~:MMMMM]              //
//                                  `                 ,MMMMMkZZuZuZZuZZZMMMMMMMMMMMMMMMMMMMMMMMMWBYM#4K4KYTHM#WHMMMMMMMMMMMNmZuuZuZZuZuZZuZuZZuZuXMMMMMMMMMMMMMMMMM<~:~(dMMMN_~:~:~(+J,:~:~:JMMMMN,             //
//        `    `               `       `       `  `    dMMMMNkZuZuuZuZuuMMMMMMMMMMMMMMMMBY>:(MbgMNdM9ME?M@M#7MagNaJMpWMMMMMMMNkZuZuZuZuXgNNNNNNNNMMMMMMMMMMMMMMMMMM[:~:(MMMMM<~:~:dMMMMr:~:~:dMMMMN             //
//                   `   `                  `           WMMMMNZZuZZuZuZZdMMMMMMMMMMMMB!~~:(M#,dMMMMMMMMNNNMMMMMMMM#dgMF:?MMMMMMRZuZuZuZMMMMMMMMMMMMMMM7THMMH9^dMMMMMgJdMMMMMN_~:~(MMMMMN:~:~~(MMMMM[            //
//                          `     `                      MMMMMNZZuZZuZuZZXMMMMMMMMM#!` _:~?3M#(MMMMMMMMMMMMMMMMMM#3?HQp~~~dMMMMMRZuZZuZdMMMMMMMMMMMMMF         UMMMMMMMMMMMMMNg+gMMMMMMMm:~::~JMMMMb            //
//         `  `                      `                   .MMMMMNZuuZZuZuuZuZZWMMMM#!`.:~:~:~?JM#u+2HWMMMMMMMH9TudNdMPTE:~.-?MMMMMKZuZZuZZuZuZuZMMMMM@           (WMMMMMMMMMMMMMMMMMMMMMMMm-:~:jMMMMF            //
//                 `                            `  `      ,MMMMMRZZuuZZuZuZuZdMMMMD_._:~~::~:~:(T9?M#(Mb(MrdNJMM3T=~:~:~:~..JMMMMNQkXXuuZZuZuZdMMMMM`              _7"MMMMMHMMMMMMM"?MMMMMMNNMMMMMM^            //
//                      `                   `              ,MMMMMRuZZuZZuZZuZMMMMMr_.:(+ggg,~:~:~:~:~?5:T8:?Y>~~:~~(JJJ-~:_`(MMMMMMMMMMMNmkXZXMMMMM%                 .MMM#`   ``     .TMMMMMMMMMMM3             //
//       `                 `     `  `  `                    ,MMMMMNZuZuZuZuZZdMMMMNJ(dMMMMMMN/:~:~::(JggJ-~~::~:(gMMMMMMN/__+MMMMMMMMMMMMMMMNMMMMMF                  MMMM`              7WMMMMM#"               //
//          `  `     `                                       ,MMMMMNZuZuZuZuZqMMMMMMMMMMMMMMMN/~:(+MMMMMMMm-~:~(MMMMMMMMMN_(MMMMM!`~?"THMMMMMMMMM#                  .MMMF                                       //
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//                             `            `                  ,MMMMMNZuZuZXMMMMMTMMMMMmOtMMMMMMMMMMMBZMMMMMMMMMMMM@tdMMMMbdMMMM[           .TMMMMMm.               dMMM`                                       //
//        `             `   `     `  `                          ,MMMMMNXuZudMMMMF ,MMMMMMmydMMMMMMM#ItttdMMMMMMMMMEtOqMMMMMMMMMM!             .UMMMMN,              MMMM                                        //
//           `     `                               `  ...(gggNNggMMMMMMNkZZMMMMM    TMMMMMMNagHH90ttttttttZHMMMMWggMMMMMMMMMMMM^                JMMMMN,             MMMM.                                       //
//                                              ` ..gMMMMMMMMMMMMMMMMMMMNkXMMMMF      TMMMMMMMMMMMMMMNNNNNNNMMMMMMMMMMMMB7"""`                   ,MMMMN.            dMMM_                                       //
//        `    `      `               `     `  ..MMMMMMMMMMMMMMMMMMMMMMMMMMMMMM]        (TMMMMMMMMMMMMMMMMMMMMMMMMMMM9^                           -MMMMb            JMMM|                                       //
//                         `      `          .JMMMMMM#"!            ?THMMMMMMMM]             ?""""HMMMMMMMMMMM"""^`                                WMMMM.           -MMM]                                       //
//                                          .MMMMMH"                     7HMMMM%                                                                   ,MMMM[           .MMMb                                       //
//         `  `         `      `     `    .dMMMM#^                          ?!                                                                     .MMMMh.          .MMMN                                       //
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//                          `      `    .MMMMM^                                                                       .            ..-.            JMMMMMMM,         MMMM.                                      //
//       `            `                 dMMMM^                                        .(J,   ..NNJ          .MMMN. .MMMMa         (MMMM]          .MMMMMMMMM,        dMMM~                                      //
//          `  `                       .MMMMF                         .dMMN,        .jMMMM]  JMMMMN,      .JMMMMM\ .MMMMMN,     .MMMMMM3          dMMMMMMMMMN        dMMM{                                      //
//                       `       `     MMMM#              `           ,MMMMMN,     .MMMMMM^  .HMMMMMN,   .MMMMMM^   ,HMMMMMN,  -MMMMMB`         .dMMMM#XMMMMM[       dMMM!                                      //
//                                  ` .MMMMF       `           `       ?MMMMMMm,  .MMMMM@      ?MMMMMMm.JMMMMMD       ?MMMMMMmMMMMMMt          .MMMMMMuudMMMM@       dMMM`                                      //
//        `        `        `         .MMMM]            `                7MMMMMMmMMMMMMt         TMMMMMMMMMMM^          TMMMMMMMMMB`          .MMMMMBuZZdMMMM#       MMM#                                       //
//           `        `          `    .MMMM]    `                          TMMMMMMMMM#!           .WMMMMMMMD             .MMMMMMMF          .MMMMMMMMNNNNMMMM#      .MMM#                                       //
//                                    .MMMMb       `                        .UMMMMMM@              .MMMMMMMm.           .JMMMMMMMMm.       dMMMMMMMMMMMMMMMMMN.     .MMM]                                       //
//        `    `         `             MMMMN.                               .MMMMMMMMN,          .MMMMMMMMMMMe         .MMMMMMMMMMMMx      ,MMMMH""""HMMMMMMMMMNa.  dMMM!                                       //
//                             `   `   -MMMMb             `    `     `    .dMMMMMMMMMMMm.       (MMMMM#^TMMMMMN,     .MMMMMMF  TMMMMMN,                  .7WMMMMMMm.MMM#                                        //
//                 `        `           MMMMMb  `  `                     .MMMMMH' ?MMMMMMe    .MMMMMM"   ,MMMMMMm.  (MMMMM#'    ,MMMMMMp                     ?HMMMMMMMM%                                        //
//         `  `       `                 MMMMMMN,        `              .MMMMMMD     TMMMMMN. .MMMMM@`      ?MMMMM] .MMMMM"        7MMMMF                       (MMMMMM#                                         //
//                                 `    dMMMMMMMN,                     dMMMM#'       .WMMMM` .MMMM^          TMMD   .T""`           ?"!                          TMMMMN                                         //
//                       `            ` JMMMMMMMMMMNJ..                .TMH"            ?!                                                                        ?MMMMb                                        //
//       `                       `      .MMMMMMMMMMMMMMMMMMMMMMMMN,                          .gggggggg+J-........                                                  UMMMM[                                       //
//          `  `   `        `            dMMMMNZUMMMMMMMMMMMMMMMMMF                         JMMMMMMMMMMMMMMMMMMMMMMMMNNJ                                            MMMMN                                       //
//                    `                  .MMMMMRuuuZZXWMMMMMMMMMM=                          .TMMMMMMMMMMMMMMMMMMMMMMMMMM]                                           JMMMM;                                      //
//                               `  `     ,MMMMMNZZuZuZuuXMMMMMD                                     MMMM#rrvwXUVWMMMMM"                                            .MMMM]                                      //
//        `              `             `   (MMMMMNkuZZuZXMMMMM$                                     .MMMM#rrrrrrrvMMMM#                                             .MMMM]                                      //
//           `              `               ,MMMMMMmZuZZdMMMMF         `                             MMMM#rvvrrvrrMMMM#                                             .MMMM]                                      //
//                 `             `            WMMMMMMmXdMMMMF                      `                 MMMMNwrvrvrrdMMMMF                                             JMMMM:                                      //
//        `    `      `             `          (MMMMMMMMMMMM!                                        -MMMMNyrrvwgMMMMM!                                            .MMMM#                                       //
//                                               (HMMMMMMMM#                     `                    ?MMMMMMMMMMMMMM^                                             dMMMM^                                       //
//                       `     `       `           .TMMMMMM#           `   `            `       `      ,WMMMMMMMMMM"                                             .MMMMMD                                        //
//         `  `             `       `                 .MMMMN                                              ?T"""""`              .MMMNa,.                        .MMMMM$                                         //
//                   `                                 JMMMM,                                                                   ,MMMMMMMMNJ..                .+MMMMMM^                                          //
//                                            `        .MMMMb        `             `          `                                 .MMMMMMMMMMMMMNNg-.......(gMMMMMMMM3                                            //
//       `         `    `        `   `                  dMMMMb                               ..                                 .MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM@^                                              //
//          `  `            `               `    `       WMMMMb                  `      `  .MMMM,   `                           .MMMMMHHHMMMMMMMMMMMMMMMMMMM9"`                                                 //
//                                                        UMMMMN,          `             .MMMMMMb                               .MMMMMMMMMMMMMMMMMMMMb                                                          //
//                                `   `                    ?MMMMMN,    `               .MMMMMMMMMp                              MMMMMMMMMMMMMMMMMMMMM#                                                          //
//        `          `   `                     `   `        .UMMMMMNg,             ..gMMMMMMMMMMMMp                            JMMMMMMMMMMMY"^` .MMMMN                                                          //
//           `                 `            `                 .TMMMMMMMNg-......JgMMMMMMMMMHHHMMMMMm.                         JMMMMMMMMMM#      .MMMMM                                                          //
//                                 `  `                          ?WMMMMMMMMMMMMMMMMMMMMMMHHHHHHMMMMMN,                      .MMMMMMMMMMMM\      .MMMM#                                                          //
//        `    `   `        `                   `                  .MMMMMMMMMMMMMMMMMHHHHHHHHHHHMMMMMMMa.                 .MMMMMMMMMMMMMMM|     .MMMMM,                                                         //
//                      `                          `    `          JMMMMMHHHHHHHHHHHHHHHHHHHHHHHHHMMMMMMMMN-..       ..(MMMMMMMD`  ?TMMMMMt     MMMMMMN                                                         //
//                                 `        `                     .MMMMMMHHHHHHHHHHHHHHHHHHHHHHHHHHHMMMMMMMMMMMMMMMMMMMMMMMMM"         ?!      .MMMMMMM[                                                        //
//         `  `      `                `         `                 dMMMMMHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHMMMMMMMMMMMMMMMMMMY"`                  .MMMMMMMMN                                                        //
//                         `   `                                 .MMMMMHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHMMMMMMMM%`                      .MMMMMMMMMM|                                                       //
//                                `                `      `      JMMMMMHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHMMMMM|                      .MMMMMMMMMMMb                                                       //
//       `              `              `    `   `                MMMMMMHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHMMMMMN                     (MMMMMMHMMMMMM.                                                      //
//          `  `   `                                    `       .MMMMMHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHMMMMMN,                 .MMMMMMMHHHMMMMM]                                                      //
//                          `      `                            (MMMMMHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHMMMMMMMN,            .JMMMMMMMHHHHHMMMMMb                                                      //
//                    `               `        `   `            dMMMMMHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHMMMMMMMMNN&-...-&MMMMMMMMMMHHHHHHMMMMMN                                                      //
//        `                    `                                MMMMMMHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHMMMMMMMMMMMMMMMMMMMMMMHHHHHHHHHHMMMMM.                                                     //
//           `           `         `        `             `    .MMMMMHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHMMMMMMMMMMMMMMMMHHHHHHHHHHHHHMMMMM}                                                     //
//                 `                                                                                                                                                                                            //
//                                                                                                                                                                                                              //
//                                                                                                                                                                                                              //
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////


contract MTGM is ERC721Creator {
    constructor() ERC721Creator("MINT GUM", "MTGM") {}
}

// 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 v4.9.0) (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
     *
     * Furthermore, `isContract` will also return true if the target contract within
     * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
     * which only has an effect at the end of a transaction.
     * ====
     *
     * [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://consensys.net/diligence/blog/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/v0.8.0/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 v4.9.0) (utils/StorageSlot.sol)
// This file was procedurally generated from scripts/generate/templates/StorageSlot.js.

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:
 * ```solidity
 * 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`, `uint256`._
 * _Available since v4.9 for `string`, `bytes`._
 */
library StorageSlot {
    struct AddressSlot {
        address value;
    }

    struct BooleanSlot {
        bool value;
    }

    struct Bytes32Slot {
        bytes32 value;
    }

    struct Uint256Slot {
        uint256 value;
    }

    struct StringSlot {
        string value;
    }

    struct BytesSlot {
        bytes 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
        }
    }

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

    /**
     * @dev Returns an `StringSlot` representation of the string storage pointer `store`.
     */
    function getStringSlot(string storage store) internal pure returns (StringSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := store.slot
        }
    }

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

    /**
     * @dev Returns an `BytesSlot` representation of the bytes storage pointer `store`.
     */
    function getBytesSlot(bytes storage store) internal pure returns (BytesSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := store.slot
        }
    }
}