using System;

public class Program

{

    public static void Main()

    {

            Console.WriteLine("Enter three numbers");

            int num1 = Convert.ToInt16(Console.ReadLine());

            int num2 = Convert.ToInt16(Console.ReadLine());

            int num3 = Convert.ToInt16(Console.ReadLine());

            string result = "failure";

            if ((num1 == 0) || (num2 == 0) || (num3 == 0))

                result = "success";

            Console.WriteLine(result);

            Console.ReadLine();

​

    }

}