using System;

public class Program

{

    public static void Main()

    {

        int a = 12, b = -7, c = 5;

if (a != b)

if (b < 0)

if (c == 0) {

a = a % b;

}

else {

a = b *(-2);

b = 15 % a;

c = a + b;

}

        Console.WriteLine("a="+a);

        Console.WriteLine("b="+b);

        Console.WriteLine("c="+c);

    }

}