#include <algorithm>
#include <array>
#include <cmath>
#include <cstdio>
#include <deque>
#include <iomanip>
#include <iostream>
#include <numeric>
#include <optional>
#include <queue>
#include <set>
#include <stack>
#include <unordered_map>
#include <unordered_set>
#include <vector>

using namespace std;

int main() {
    int64_t n;
    cin >> n;
    int32_t cnt = 0;
    while (n != 1) {
        n >>= 1;
        ++cnt;
    }
    cout << (int64_t(1) << cnt) << endl;
    return 0;
}