using System;

public class Program

{

    public static void Main()

    {

     int a1, a2, a3, sum;

     Console.Write("Angle 1 of Triangle:");

     a1 = int.Parse(Console.ReadLine());

     Console.Write("Angle 2 of Triangle:");

     a2 = int.Parse(Console.ReadLine());

     Console.Write("Angle 3 of Triangle:");

     a3 = int.Parse(Console.ReadLine());

    sum = a1 + a2 + a3;

    if (sum == 180)

    {

    Console.WriteLine("The triangle is Valid");

    }

    else

    {

    Console.WriteLine("The triangle is Invalid");

    }

   }

}