#include<cstdio>
short int n;
int sol[100010];
void mult(int H[], short int X)
{ 
	int i;
	int 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()
{
	int i;
	freopen("patrate2.in","r",stdin);
	freopen("patrate2.out","w",stdout);
	scanf("%d",&n);
	sol[0]=1;
	sol[1]=1;
	for(i=1;i<=n*n;i++)
		mult(sol,2);
	for(i=1;i<=n;i++)
		mult(sol,i);
	for(i=sol[0];i>=1;i--)
		printf("%d",sol[i]);
	return 0;
}