#include <fstream>

using namespace std;
int n,i,t,d[4];
int main()
{
    ifstream f("12perm.in");
    ofstream g("12perm.out");
    t=1<<20;
    f>>n;
    d[0]=12;
    d[1]=1;
    d[2]=2;
    d[3]=6;
    for(i=5; i<=n; i++)
    {
        d[i&3]=(d[(i-1)&3]+d[(i-3)&3]+2*(i-2))%t;
    }
    g<<d[n&3]<<'\n';
    f.close(); g.close();
    return 0;
}