#include<stdio.h>
const char in[]="12perm.in", out[]="12perm.out";
const int mod = 1048576;
int sol, n , j , last, aux;
int t[]={0, 1, 2, 6, 12};
int main()
	{
	freopen(in,"r",stdin);
	freopen(out,"w",stdout);
		scanf("%d", &n);
		for(j = 5 ; j <= n ; ++j)
		{
			aux=t[4];
			t[4]=(t[4]+t[2]+2*(j-2))&(mod-1);
			t[2]=t[3];t[3]=aux;
		}
		if(n <= 4)printf("%d\n", t[n]);
		else printf("%d\n", t[4]);
		return 0;
}