#include<stdio.h>
int n;
int i, X=2,j;
unsigned long T=0;
int H[1000];

void mult(int X)
{
		T=0;
		for (i=1;i<=H[0];i++)
		{ H[i]=H[i]*X+T;
		  T=H[i]/10;
		  H[i]=H[i]%10;
		}
		while (T)
		{ H[++H[0]]=T%10;
		  T/=10;
		}
}


int main()
{
	freopen("patrate2.in", "r", stdin);
	freopen("patrate2.out", "w", stdout);
	scanf("%d", &n);
	H[0]=1;
	H[1]=1;
	for(j=1;j<=n*n;j++)
		mult(2);
	for(j=1;j<=n;j++)
		mult(j);
	for(j=H[0];j>=1;j--)
		printf("%d", H[j]);
	return 0;
}