08. Factorial

/**
 * Project: Advanced_Loops - created by borkins on 2017-04-08.
 */

import java.util.Scanner;

public class _08_Factorial
{
    public static void main(String[] args)
    {
        Scanner console = new Scanner(System.in);

        int n = Integer.parseInt(console.nextLine());

        int fac = 1;

        for (int i = 1; i <= n; i++) fac *= i;

        System.out.println(fac);
    }
}