#include <fstream>

using namespace std;
ifstream f("patrate2.in");
ofstream g("patrate2.out");
int factorial(int n) {
	int temp;

	if(n <= 1) return 1;

	temp = n * factorial(n-1);
	return temp;
}
int i=1;
int main()
{   long long nf;
    int n;
    f>>n;
    if(n==1) nf=2;
        else nf=factorial(n)*4*n*n*(n-1);
    g<<nf;
    return 0;
}