using System;

​

public class Program

{

    public static void Main()

    {

        Console.WriteLine("enter a number");

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

        int rem = n % 7;

        int digit = n % 3;

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

        {

            Console.WriteLine(" it is divisible ");

        }

        else 

            {

            Console.WriteLine(" it is not divisible ");

        }

        }

    }

​