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solidity 0.8.24

compile 0msevm 0ms

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

contract Counter {
    uint256 public total;
    address public lastCaller;

    event Bumped(address indexed by, uint256 to);

    function bump(uint256 n) external {
        require(n > 0, "n must be positive");
        total += n;
        lastCaller = msg.sender;
        emit Bumped(msg.sender, total);
    }
}

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