#include <stdio.h>
#include <stdlib.h>
#include <math.h>

int factorial(int n){
	if(n==0){
	return 1;
	}
	else{
	return n * factorial(n-1);
	}

}

double mo(int a){
	int m;
	int ret;
	m=10*10*10*10*10*10*10*10*10+7;
	ret=a %m;
	return ret;
}


int main(void){
	int answer=0;
	int n;
	double ans=0;
	scanf("%d", &n);
	answer=factorial(n);
	ans=mo(answer); 
	printf(" %f", ans);
	return 0;
}