using System;

public class Program

{

    public static void Main(int[] args)

    {

        Console.WriteLine("Enter number");

        int a = Convert.ToInt16(Console.ReadLine());

​

       Console.WriteLine("Enter number");

       int b = Convert.ToInt16(Console.ReadLine());

​

        Console.WriteLine("Enter number");

        int c = Convert.ToInt16(Console.ReadLine());

        int s = getscore();

        Console.WriteLine(s);

​

​

    }

    static int getscore(int a, int b, int c)

    {

        int x = a;

        int y = b;

        int z = c;

        int result = 501 - x - y - z;

        if(result = 0)

        {

        return result;

        }

    }

    }