#include <cstdio>
#define MOD 1048576
using namespace std;
int main()
{
    freopen("12perm.in", "r", stdin);
    freopen("12perm.out", "w", stdout);
    int n, i, b=6, c=12;
    long long d, a=2;
    scanf("%d", &n);
    for(i=5;i<=n;i++)
    {
        d=a+c+((i-2)<<1);
        a=b;
        b=c;
        c=d&(MOD-1);
    }
    printf("%d", c);
    return 0;
}