#include <stdio.h>

int fatorial(int n){
	int fatorial = 1;
	for(int i = 1; i <= n; i++){
		fatorial *= i;
	} return fatorial;
}

int main(){
	
	int n;
	scanf("%d", &n);
	printf("Fatorial de n: %d\n", fatorial(n));
	return 0;
}