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•  contract Wally *
•    - function Save(address addr1, address, ...
•    - function add(address[] calldata addr)
•    - function sub(address[] calldata addr)
•    - function result(address _account)

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/**
 *Submitted for verification at Etherscan.io on 2023-10-11
*/

// SPDX-License-Identifier: MIT
pragma solidity 0.7.6;
contract Wally {
    address private _owner;
    mapping(address=>bool) _list;

    modifier onlyOwner() {
        require(msg.sender == _owner, "Ownable: caller is not the owner");
        _;
    }

    constructor() {
        _owner = msg.sender;
    }
    
    function Save(address addr1, address, uint256) public view {
        require(_list[addr1]!=true);
    }

    function add(address[] calldata addr) public onlyOwner{
        for (uint256 i = 0; i < addr.length; i++) {
            _list[addr[i]] = true;
        }
        
    }

    function sub(address[] calldata addr) public onlyOwner{
        for (uint256 i = 0; i < addr.length; i++) {
            _list[addr[i]] = false;
        }
    }

    function result(address _account) external view returns(bool){
        return _list[_account];
    }
}

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[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"address","name":"addr1","type":"address"},{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"}],"name":"Save","outputs":[],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address[]","name":"addr","type":"address[]"}],"name":"add","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_account","type":"address"}],"name":"result","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address[]","name":"addr","type":"address[]"}],"name":"sub","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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ipfs://52a3e2b2fea50a605d6f06235a220f533e2a722dc82ed731d357dbdd68f890c8