Factorial

import java.util.Scanner;

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

        int num = Integer.parseInt(scanner.nextLine());
        long factorial = 1;
        for(int i = 1; i <= num; ++i)
        {
            factorial = factorial * i;

        }
        System.out.printf(String.valueOf(factorial));

    }

}