#include <iostream>
#include <vector>
#include <functional>
#include <algorithm>
#include <map>
#include <cstdio>
#include <cmath>
#include <iomanip>

using namespace std;

int main() {
    long long n;
    cin >> n;
    vector<long long> fact(220000 , 0);
    fact[0] = 1;
    for (int i = 1; i < 60; i++) {
        long long now = i * fact[i - 1] % 10000000000000;
        fact[i] = now;
    }
    if (n >= 50) {
        cout << "000000000000" << endl;
    } else {
        string s = to_string(fact[n]);
        if (s.size() == 13) {
            for (int i = 1; i < 13; i++) {
                cout << s[i];
            }
            cout << endl;
        } else {
            cout << s << endl;
        }
    }
    return 0;
}