#include <fstream>

using namespace std;

ifstream f("kfib.in");
ofstream g("kfib.out");

int n,a=1,b=1,c;

int main ()
{
    f>>n;
    for (int i=3; i<=n; i++)
    {
        c=(a+b)%666013;
        a=b;
        b=c;
    }
    g<<b%666013;
    return 0;
}