#include <bits/stdc++.h>

using namespace std;
typedef long long ll;
typedef vector<int> VI;
typedef vector<VI> VVI;
typedef vector<ll> VL;
typedef vector<VL> VVL;
typedef pair<int, int> PII;

#define FOR(i, a, n) for (ll i = (ll)a; i < (ll)n; ++i)
#define REP(i, n) FOR(i, 0, n)
#define ALL(x) x.begin(), x.end()
#define MP make_pair
#define PB push_back
#define MOD 1000000007
#define INF (1LL << 30)
#define LLINF (1LL << 60)
#define PI 3.14159265359
#define EPS 1e-12
#define int ll
string a[] = {"1", "2",   "6",
           "24",          "120",
           "720",          "5040",
           "40320",        "362880",
           "3628800",      "39916800",
           "479001600",    "6227020800",
           "87178291200",  "307674368000",
           "922789888000", "687428096000",
           "373705728000", "100408832000",
           "008176640000", "171709440000",
           "777607680000", "884976640000",
           "239439360000", "985984000000",
           "635584000000", "160768000000",
           "501504000000", "543616000000",
           "308480000000", "562880000000",
           "012160000000", "401280000000",
           "643520000000", "523200000000",
           "835200000000", "902400000000",
           "291200000000", "356800000000",
           "272000000000", "152000000000",
           "384000000000", "512000000000",
           "528000000000", "760000000000",
           "960000000000", "120000000000",
           "760000000000", "240000000000"};

signed main(void) {
  int n;
  cin >> n;
  if(n > 49) cout << "000000000000" << endl;
  else cout << a[n-1] << endl;

  return 0;
}