#include<fstream>
using namespace std;

int main()
{
	long n,cn;
	ifstream f("patrate2.in");
	ofstream o("patrate2.out");
	f>>n;
	cn=n;
	n=n*n;
	n=n*n;
	if(cn<=2)
		n=n*2;
	if(cn==3)
		n=n*3;
	if(cn>=4)
		n=n*4;
	o<<n;
}