#include <fstream>
#define M 666013
using namespace std;

int k;

ifstream ifs("kfib.in");
ofstream ofs("kfib.out");

int fib1(int k)
{
    if (k == 0) return 0;
    if (k == 1) return 1;
    return fib1(k-1) + fib1(k-2) % M;
}

int fib2(int k)
{
    if (k < 2) return k;
    
    int a = 0;
    int b = 1;
    for (int i = 2; i <= k; ++i)
    {
        int c = (a + b) % M;
        a = b;
        b = c;
    }
    
    return b;
}

int main()
{
    ifs >> k;
    
    ofs << fib2(k) << endl;

    return 0;
}