#define _USE_MATH_DEFINES
#include <algorithm>
#include <cstdio>
#include <functional>
#include <iostream>
#include <cfloat>
#include <climits>
#include <cstdlib>
#include <cstring>
#include <cmath>
#include <map>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <string>
#include <time.h>
#include <vector>
#include <random>
#include <cassert>
using namespace std;

#define rep(i, N) for (int i = 0; i < N; i++)
#define pb push_back

typedef long long ll;
typedef unsigned long long ull;
typedef pair<int, int> i_i;
typedef pair<ll, int> ll_i;
typedef pair<int, ll> i_ll;
typedef pair<double, int> d_i;
typedef pair<ll, ll> ll_ll;
typedef pair<double, double> d_d;
typedef vector<int> vi;
struct edge { int v; ll w; };

const int MOD = 1000000007;
ll _MOD = 1000000009;
double EPS = 1e-10;
ll INF = INT_MAX;

int main() {
	ll x; cin >> x;
	if (x > 100) {
		cout << "000000000000" << endl;
		return 0;
	}
	ll y = 1;
	rep(t, x) y = y * (t + 1) % 1000000000000LL;
	double z = 1;
	rep(t, x) z = z * (t + 1);
	stringstream ss;
	ss << y;
	string s = ss.str();
	if (z < 1000000000000LL) cout << s << endl;
	else {
		while (s.size() < 12) s = "0" + s;
		cout << s << endl;
	}
}