fatorial

import java.util.Scanner;
public class kkk {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int soma = 1,n;

        System.out.println("valor:");
        n = sc.nextInt();

        if (n==0 || n == 1){
            soma = 1;
        }

        for (int i = n; i > 1; i--){
            soma *= i;
        }

        System.out.println("valor: "+soma);

    }

}