using System;

public class Program

{

    public static void Main()

    {

        Console.Write("Моля въведете число: ");

int num = int.Parse(Console.ReadLine());

int number = 1;

if (num >= 1)

{

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

    {

        Console.WriteLine($"{num}! = {number = number * i}");

    }

}

else

{

    Console.WriteLine("!!!");

}

    }

}