#include<stdio.h>
#include<iostream>
#include <fstream>
using namespace std;

double putere(int n)
{
    if(n==1)
    {
        return 2;
    }
    else
    {
        return 2*putere(n-1);
    }
}
double factorial(int n)
{
    if(n==1)
        return 1;
    else
    {
        return n*factorial(n-1);
    }
}

int main()
{
    int n;
    double rez;
    FILE* in=fopen("patrate.in","r");
    ofstream out;
    out.open("patrate.out");
    fscanf(in,"%d",&n);
    rez=putere(n*n)*factorial(n);
    out << rez ;
    fclose(in);
    out.close();
    return 0;
}