using System;

public class Program

{

    public static void Main()

    {

        Console.Write("Enter a number: ");

        if (int.TryParse(Console.ReadLine(), out int mult))

        {

            for (int i = 1; i <= 10; i++)

            {

                Console.WriteLine($"{mult} x {i} = {mult*i}");

            }

        }

        else

            Console.WriteLine("invalid input");

    }

}