#include<stdio.h>
using namespace std;
FILE *fin,*fout;
int n;
long long int solve(int i)
{
    if(i==0) return 1;
    else return i*solve(i-1);
}
long long int pow(int i)
{
    if(i==0) return 1;
    else return 2*pow(i-1);
}
int main()
{
    fin=fopen("patrate2.in","r");
    fout=fopen("patrate2.out","w");
    fscanf(fin,"%d",&n);
    printf("%d",solve(n)*pow(n));
}