///naspa demonstratia
#include <fstream>
#define In "12perm.in"
#define Out "12perm.out"
#define MOD 1048575
using namespace std;
int T[] ={0, 1 , 2, 6, 12};
int n;
inline void Read()
{
    ifstream f(In);
    f>>n;
    f.close();
}

inline void Solve()
{
    if(n<=4)
        return ;
    for(int i = 5;i <= n; ++i)
    {
        T[1] = T[2];
        T[2] = T[3];
        T[3] = T[4];
        T[4] = (T[3] + T[1] + 2 * (i - 2))&MOD;
    }
}

inline void Write()
{
    ofstream g(Out);
    g<<T[4]<<"\n";
    g.close();
}

int main()
{
    Read();
    Solve();
    Write();
    return 0;
}