#include <atcoder/all>
#include <bitset>
#include <fstream>
#include <functional>
#include <iostream>
#include <iomanip>
#include <limits>
#include <map>
#include <math.h>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <stdio.h>
#include <stdlib.h>
#include <unordered_map>
#include <unordered_set>
#include <vector>
using namespace std;
using namespace atcoder;

typedef long long ll;
typedef long double ld;
typedef std::pair<int, int> pii;
typedef std::pair<ll, ll> pll;
typedef std::pair<ld, ld> pid;
typedef std::pair<ll, std::string> pls;
typedef std::vector<bool> vb;
typedef std::vector<vb> vvb;
typedef std::vector<int> vi;
typedef std::vector<vi> vvi;
typedef std::vector<vvi> vvvi;
typedef std::vector<vvvi> vvvvi;
typedef std::vector<ll> vl;
typedef std::vector<vl> vvl;
typedef std::vector<vvl> vvvl;
typedef std::vector<vvvl> vvvvl;
typedef std::vector<ld> vd;
typedef std::vector<vd> vvd;
typedef std::vector<std::string> vs;
#define rep(i,n) for(auto i=0; i<n; ++i)
#define repm(i,s,n) for(auto i=s; i<n; ++i)
#define repd(i,n) for(auto i=n-1; i>=0; --i)
#define repdm(i,e,n) for(auto i=n-1; i>=e; --i)
#define all(a) (a).begin(), (a).end()
#define rall(a) (a).rbegin(), (a).rend()

template <class T> inline bool chmax(T& a, T b, int eq = 0) { if (a < b || (a == b && eq)) { a = b; return 1; } return 0; }
template <class T> inline bool chmin(T& a, T b, int eq = 0) { if (a > b || (a == b && eq)) { a = b; return 1; } return 0; }

template <class mint, internal::is_modint_t<mint>* = nullptr> constexpr istream& operator>>(istream& is, mint& x) noexcept {long long v = 0; std::cin >> v; x = v; return is;}
template <class mint, internal::is_modint_t<mint>* = nullptr> constexpr ostream& operator<<(ostream& os, const mint& x) noexcept {os << x.val(); return os;}
inline void _n() { std::cout << std::endl; }
template <class T> inline void _(const T a) { std::cout << a; }
template <class T> inline void _l(const T a) { _(a); _n(); }
template <class T> inline void _s(const T a) { _(a); _(' '); }
template <class T> inline void _v(const std::vector<T> v) { for(auto a : v) _(a); }
template <class T> inline void _vl(const std::vector<T> v) { for(auto a : v) _l(a); }
template <class T> inline void _vs(const std::vector<T> v) { for(auto a : v) _s(a); _n(); }
template <class T> inline void _vvl(const std::vector<std::vector<T>> v) { for(auto a : v) { _v(a); _n(); } }
template <class T> inline void _vvs(const std::vector<std::vector<T>> v) { for(auto a : v) { _vs(a); } }
inline void ynl(const bool b) {_l(b ? "yes" : "no");}
inline void yns(const bool b) {_l(b ? "Yes" : "No");}
inline void ynu(const bool b) {_l(b ? "YES" : "NO");}

constexpr int INF = numeric_limits<int>::max() >> 1;
constexpr long long INF_LL = numeric_limits<long long>::max() >> 1LL;
const long long MOD1 = 1000000007;
const long long MOD9 = 998244353;
using mint1 = atcoder::modint1000000007;
using mint9 = atcoder::modint998244353;

//* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ *//

void input() {
    
    
}

template <class Cost> struct graph_l {

    public :
    graph_l(int n) : _n(n), _graph(n), _dist(n, 0) {}

    void add (int from, int to, Cost cost){
        assert(0 <= from && from < _n);
        assert(0 <= to && to < _n);
        _graph[from].push_back(_edge{(unsigned int)from, (unsigned int)to, cost});
    }
    void add_bi (int from, int to, Cost cost){
        add(from, to, cost);
        add(to, from, cost);
    }

    bool isReachable (int v) {
        assert(0 <= v && v < _n);
        return _dist[v] < DIST_INF;
    }
    Cost get_dist (int v) {
        assert(0 <= v && v < _n);
        return _dist[v];
    }
    std::vector<int> get_edges(int v) {
        std::vector<int> edges;
        for (auto edge : _graph[v]) {
            edges.push_back(edge.to);
        }
        return edges;
    }

    void dijkstra (int s) {
        assert(0 <= s && s < _n);
        for (int i = 0 ; i < _n ; ++i) { _dist[i] = DIST_INF; }
        _dist[s] = 0;

        auto edge_compare = [] (_edge e1, _edge e2) {
            if (e1.cost != e2.cost) return e1.cost > e2.cost;
            else if (e1.to != e2.to) return e1.to > e2.to;
            else return e1.from > e2.from;
        };
        priority_queue<_edge, vector<_edge>, function<bool(_edge, _edge)>> edge_que(edge_compare);
        for (auto e : _graph[s]) {
            edge_que.push(_edge{e.from, e.to, e.cost});
            if(_dist[e.to] > e.cost) _dist[e.to] = e.cost;
        }
        while (!edge_que.empty()) {
            _edge p = edge_que.top(); edge_que.pop();
            unsigned int v = p.to;
            if (_dist[v] < p.cost) continue;
            for (auto e : _graph[v]) {
                auto next_cost = e.cost + _dist[v];
                if (_dist[e.to] <= next_cost) continue;
                _dist[e.to] = next_cost;
                edge_que.push(_edge{e.from, e.to, _dist[e.to]});
            }
        }
    }

private:
    int _n;
    const Cost DIST_INF = numeric_limits<Cost>::max();

    struct _edge {
        unsigned int from;
        unsigned int to;
        Cost cost;
    };
    std::vector<std::vector<_edge>> _graph;
    std::vector<Cost> _dist;
};


void solve() {
    
    
    ll N; cin >> N;
    
    int flg = 0;
    ll tmp = 1;
    for(int i = 2; i <= N; ++i) {
        tmp *= i;
        if(tmp >= 1000000000000) flg = 1;
        if(tmp == 0) break;
        tmp %= 1000000000000;
    }
    
    if(tmp != 0) {
        if(flg) rep(i, 11 - floor(log10(tmp))) _(0);
        _l(tmp);
    } else {
        _l("000000000000");
    }
    

    
}

//* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ *//

int main() {
    
    std::ifstream in("input.txt");
    std::cin.rdbuf(in.rdbuf());
    std::cin.tie(0);
    std::ios::sync_with_stdio(false);
    
    input();
    solve();
    
    return 0;
}