//#include <iostream>
#include <fstream>
using namespace std;
int v[10000];
void Mult(unsigned long X)
{
    int i;
    unsigned long T=0;
    for(i=1;i<=v[0];i++){
        v[i]=v[i]*X+T;
        T=v[i]/10;
        v[i]=v[i]%10;
    }
    while(T){
        v[++v[0]]=T%10;
        T/=10;
    }
}
int main()
{
    ifstream cin("patrate2.in");
    ofstream cout("patrate2.out");
    int n;
    cin>>n;
    v[0]=1;
    v[1]=1;
    for(int i=1;i<=n*n;i++)
        Mult(2);
    for(int i=1;i<=n;i++)
        Mult(i);
    for(int i=v[0];i>0;i--)
        cout<<v[i];
    return 0;
}