using System;

​

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Enter a no");

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

        int rem = n % 7;

        int digit = n % 10;

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

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

        else

            Console.WriteLine("It is not a buzz no");

    }

}