#include <iostream>

 #include <cstdio>

 using namespace std;

 typedef long long ll;

 ll m, b;

 int main()

 {

     cin >> m >> b;

     ll maxn = ;

     for (ll i = ; i <= m * b; i++)

     {

         ll j = - i / m + b;

         if (m * j + i - m * b <= )

         {

             ll ans = (i + ) * (j + ) * (i + j) / ;

             if (ans > maxn)

                 maxn = ans;

         }

     }

     cout << maxn << endl;

     return ;

 }