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#include <fstream>
#include <algorithm>
#define x 666013
using namespace std;
ifstream f("kfib.in");
ofstream g("kfib.out");
int n,nr,pen,antepen;
int main()
{
f>>n;
if (n==0) g<<0<<'\n';
else if (n==1) g<<1<<'\n';
else
{
pen=1;
antepen=0;
for (int i=2; i<=n; ++i)
{
nr=(pen+antepen)%x;
antepen=pen;
pen=nr;
}
g<<nr<<'\n';
}
f.close();
g.close();
return 0;
}