answer.code: In function ‘long long int max_weights(int, int, std::vector<int>, std::vector<int>, std::vector<int>)’:
answer.code:6:5: error: ‘ll’ was not declared in this scope
    6 |     ll total = 0;
      |     ^~
answer.code:8:17: error: ‘total’ was not declared in this scope
    8 |                 total += W[i];
      |                 ^~~~~
answer.code:10:16: error: ‘total’ was not declared in this scope
   10 |         return total;
      |                ^~~~~