#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("kfib.in");
ofstream fout("kfib.out");
unsigned long long n,k,n1,n2,n3;
int mod=666013;
int main()
{
    fin>>n;n1=0;n2=1;
    k=k%(mod*2+2);
    for(int i=1;i<=n;++i)
    {
        n3=(n1+n2)%mod;
        n1=n2;n2=n3;
        ///cout<<n1<<' '<<n2<<'\n';
    }
    fout<<n1;
    return 0;
}