// Page 254

import java.util.Scanner;
public class Prog_16_2
{
	public static int fact (int n)
	{
		if (n==1)
			return 1;
		else
			return n * fact(n-1);
	}
	public static void main(String[] args)
	{
		int f = fact (10);
		System.out.println("the result is:"+f);
	}
}