#include<stdio.h>
	#include<string.h>
	FILE *f , *g ;
	int n , v[1000000] , p;
	
	void citire();
	void solve();
	void tipar();
	void mul(int v[] ,int x);
	
	
	int main()
	{
		citire();
		solve();
		tipar();
		return 0;
	}
	
	void citire()
	{
		f=fopen("patrate2.in" , "r" );
		fscanf(f , "%d" , &n );
		fclose(f);
	}
	
	void mul(int v[] , int x )
	{
		int t = 0 ,i;
		for(i = 1 ; i<= v[0] || t ; i++ , t/=10 )
		{
			v[i] = (t+=v[i]*x)%10;
		}
		v[0] = i-1;
	}
	
	void solve()
	{
		v[0] = v[1] = 1;
		for(int i=1 ; i<= n ; ++i  )
			mul(v,i);
		/*for(int i = 1 ; i <= p ; ++i )
			mul(v,2);*/
		for(int i = 1 ; i<= n*n/4 ; ++i )
			mul(v,16);
		for(int i = n*n/4*4+1 ; i <= n*n ; ++i )
			mul(v,2);
	}
	
	void tipar()
	{
		g=fopen("patrate2.out" , "w" );
		while(v[0])fprintf(g , "%d" , v[v[0]--]);
		fclose(g);
	}