func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n;     cin >> n;     float square = sqrt(n);     float csquare = ceil(square);     if ((csquare == square) || (csquare - square <= 0.5)) {       cout << 4 * csquare;     } else if (csquare - square > 0.5) {       cout << 2 * (csquare + (csquare - 1));     }     return 0;   }   