gistfile1.txt

// SPDX-License-Identifier: GPL-3.0
pragma solidity >=0.8.0;

contract Test {
    mapping(uint256 => uint256) public a;
    mapping(uint256 => uint256) public b;

    function test1() public {
        b[0]++;
        b[0]--;
    }

    function test2() public {
        a[0]++;
        a[0]--;
    }
}