Factorial

import java.util.Scanner;

/**
 * Created by Jo on 2/21/2017.
 */
public class Factorial {
    public static void main(String[] args) {
        Scanner console = new Scanner(System.in);
        int number = Integer.parseInt(console.nextLine());
        int factoriel = 1;

        for (int i = 1; i <= number; i++) {
            factoriel *= i;
        }
        System.out.println(factoriel);
    }
}