codeHunt参考

我用的是C#

01

tutorial

02

using System;
public class Program {
    public static int Puzzle(int x) {
        return x + 1;
    }
}

03

using System;
public class Program {
    public static int Puzzle(int x) {
        return 2 * x;
    }
}

04

using System;
public class Program {
    public static int Puzzle(int x, int y) {
     
        return x + y;
    }
}