X       EXPECTED RESULT     YOUR RESULT
Success     29      0       0
Success     4       1       1
Success     -2      -2      -2
Success     3       1       1
Success     -4      -1      -1
Success     2       2       2
Success     -95     0       0
Success     -1      -4      -4
Success     1       4       4

using System;
public class Program {
    public static int Puzzle(int x) {
        if (x==1) return 4;
        if (x==-1) return -4;
        if (x<-4 || x>4) return 0;
        if (x<-2) return -1;
        if (x<0) return x;
        if (x>3) return 1;
        return 4-x;
    }
}