UVa 623 - 500!

// UVa 623 - 500!

import java.math.BigInteger;
import java.util.Scanner;

public class Main {

	static BigInteger[] fact = new BigInteger[1001];

	public static void main(String[] args) {

		Scanner scanner = new Scanner(System.in);
		int m = 0;
		fact[0] = BigInteger.valueOf(1);

		while (scanner.hasNextInt()) {
			int n = scanner.nextInt();
			if (n > m) {
				for (int i = m + 1; i <= n; i++)
					fact[i] = fact[i - 1].multiply(BigInteger.valueOf(i));
				m = n;
			}
			System.out.println(n + "!");
			System.out.println(fact[n].toString());
		}
	}

}