func_code_string: #include <bits/stdc++.h>   using namespace std;   vector<long long> v;   int main() {     v.push_back(1);     long long x, i, xx = 10, c = 2, cc = 0;     while (1) {       i = 1;       cc = c - 1;       xx = 0;       while (i <= c) {         xx = xx + pow(2, cc);         cc++;         i++;       }       c++;       if (xx <= 100000) {         v.push_back(xx);       } else {         break;       }     }     int sz = v.size();     long long nn;     cin >> nn;     for (int ii = sz - 1; ii >= 0; ii--) {       if (v[ii] <= nn && nn % v[ii] == 0) {         cout << v[ii] << endl;         return 0;       }     }     return 0;   }   