func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n;     cin >> n;     vector<int> v;     for (int i = 1; i <= 20; ++i) {       int first = ((1 << i) - 1) * (1 << (i - 1));       if (first > 1e5) break;       v.push_back(first);     }     for (int i = v.size() - 1; i >= 0; --i) {       if (n % v[i] == 0) return cout << v[i], 0;     }     return 0;   }   