func_code_string: #include <bits/stdc++.h>   using namespace std;   long long ans;   vector<long long> all, aa, bb;   int main() {     aa.clear();     bb.clear();     all.clear();     long long a, b;     cin >> a >> b;     ans = 2 * (a + b + 1);     for (long long i = 1; i * i <= (a + b); i++)       if ((a + b) % i == 0) all.push_back(i);     for (long long i = 1; i * i <= a; i++)       if (a % i == 0) aa.push_back(i);     for (long long i = 1; i * i <= b; i++)       if (b % i == 0) bb.push_back(i);     int now1 = 0, now2 = 0;     while (now1 < aa.size() && now2 < all.size()) {       if (aa[now1] <= all[now2] && (a / aa[now1]) <= (a + b) / (all[now2])) {         ans = min(ans, 2 * (all[now2] + (a + b) / all[now2]));         now2++;       } else if (aa[now1] > all[now2])         now2++;       else         now1++;     }     now1 = 0, now2 = 0;     while (now1 < bb.size() && now2 < all.size()) {       if (bb[now1] <= all[now2] && (b / bb[now1]) <= (a + b) / (all[now2])) {         ans = min(ans, 2 * (all[now2] + (a + b) / all[now2]));         now2++;       } else if (bb[now1] > all[now2])         now2++;       else         now1++;     }     cout << ans << endl;     return 0;   }   