#include<iostream>
#include<fstream>

using namespace std;
ifstream fin("kfib.in");
ofstream fout("kfib.out");

int n;
int f[100000];

void citire()
{
    fin>>n;
}

int main ()
{
    citire();
    f[0]=0,f[1]=1;
    for(int i=2;i<=n;i++)
    {
        f[i]=(f[i-1]+f[i-2])%666013;
    }
    fout<<f[n];
    fin.close();
    fout.close();
    return 0;
}