using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("enter a number");

        int n = Int32.Parse(Console.WriteLine());

         int rem = n % 7;

        int digit = n % 10;

        if (rem == 0 || digit == 7)

        {

            Console.WriteLine(" it is a buzz no");

        }

        else

        {

            Console.WriteLine("its not a buzz no");

        }

​

    }

}