include

using namespace std;

long strangeCounter(long t) { long cycle_start = 1; long cycle_length = 3;

while (cycle_start + cycle_length <= t) {
    cycle_start += cycle_length;
    cycle_length *= 2;
}

return cycle_length - (t - cycle_start);

}

int main() { ios::sync_with_stdio(false); cin.tie(NULL);

long t; cin >> t;
cout << strangeCounter(t) << "\n";

return 0;

}