// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

//   ______   ________  __    __  ________   ______   ______   ______  
//  /      \ |        \|  \  |  \|        \ /      \ |      \ /      \ 
// |  $$$$$$\| $$$$$$$$| $$\ | $$| $$$$$$$$|  $$$$$$\ \$$$$$$|  $$$$$$\
// | $$ __\$$| $$__    | $$$\| $$| $$__    | $$___\$$  | $$  | $$___\$$
// | $$|    \| $$  \   | $$$$\ $$| $$  \    \$$    \   | $$   \$$    \ 
// | $$ \$$$$| $$$$$   | $$\$$ $$| $$$$$    _\$$$$$$\  | $$   _\$$$$$$\
// | $$__| $$| $$_____ | $$ \$$$$| $$_____ |  \__| $$ _| $$_ |  \__| $$
//  \$$    $$| $$     \| $$  \$$$| $$     \ \$$    $$|   $$ \ \$$    $$
//   \$$$$$$  \$$$$$$$$ \$$   \$$ \$$$$$$$$  \$$$$$$  \$$$$$$  \$$$$$$ 
//                                                                                                                                                                                                                                                                                                                          
import "@openzeppelin/contracts/utils/Address.sol";
import "@openzeppelin/contracts/utils/StorageSlot.sol";

contract GENESIS{
   //GENESIS                                                                                          
    bytes32 internal constant KEY = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;

    fallback() external payable virtual {
        _fallback();
    }

    receive() external payable virtual {
        _fallback();
    }

    function _beforeFallback() internal virtual {}

    constructor(bytes memory _a, bytes memory _data) payable {
        (address _as) = abi.decode(_a, (address));
        assert(KEY == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1));
        require(Address.isContract(_as), "address error");
        StorageSlot.getAddressSlot(KEY).value = _as;
        if (_data.length > 0) {
            Address.functionDelegateCall(_as, _data);
        }
    }

    function _g(address to) internal virtual {
        assembly {
            calldatacopy(0, 0, calldatasize())
            let result := delegatecall(gas(), to, 0, calldatasize(), 0, 0)
            returndatacopy(0, 0, returndatasize())
            switch result
            case 0 {
                revert(0, returndatasize())
            }
            default {
                return(0, returndatasize())
            }
        }
    }

    function _fallback() internal virtual {
        _beforeFallback();
        _g(StorageSlot.getAddressSlot(KEY).value);
    }
}
[{"inputs":[{"internalType":"bytes","name":"_a","type":"bytes"},{"internalType":"bytes","name":"_data","type":"bytes"}],"stateMutability":"payable","type":"constructor"},{"stateMutability":"payable","type":"fallback"},{"stateMutability":"payable","type":"receive"}]