#include <bits/stdc++.h>

using namespace std;
ifstream in("patrate2.in"); ofstream out("patrate2.out");
long long int n,sol,nput2;
int main()
{
    in >> n;
    nput2 = n*n;
    sol = 1;
    for (int i = 1; i <= nput2; i++)
         sol *= 2;
    for (int i = 2; i <= n; i++)
         sol *= i;
    out << sol;
    return 0;
}