func_code_string: #include <bits/stdc++.h>   using namespace std;   long long bananaz(long long x, long long y) {     return (x + 1) * (y + 1) * (x + y) / 2;   }   int main() {     ios_base::sync_with_stdio(false);     long long m, b, x = 0, y, max = -1;     cin >> m >> b;     y = b;     while (y >= 0) {       if (bananaz(x, y) > max) max = bananaz(x, y);       x++;       while (y > -1.0 * x / m + b) y--;     }     cout << max << endl;   }   