#include <iostream>

using lint = long long;

void solve() {
    lint n;
    std::cin >> n;

    std::cout << n + 1 - (1LL << __builtin_popcountll(n)) << "\n";
}

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

    solve();

    return 0;
}