#include <bits/stdc++.h>

using namespace std;
void fast_io() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
}

int main() {
    fast_io();
    long long n;
    cin >> n;
    vector<int> p;
    for (int i = 0; i < 60; i++) {
        if (n & (1LL << i)) {
            p.push_back(i);
        }
    }
    cout << (1LL << p.back()) << endl;
}