answer.code: In function ‘ll max_weights(int, int, vi, vi, vi)’:
answer.code:51:18: error: no matching function for call to ‘max(ll&, __gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type)’
   51 |         ans = max(ans, prefix_sum0[k] + prefix_sum1[n - 1 - k]);
      |               ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/11/vector:60,
                 from fish.h:1,
                 from answer.code:1:
/usr/include/c++/11/bits/stl_algobase.h:254:5: note: candidate: ‘template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)’
  254 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/11/bits/stl_algobase.h:254:5: note:   template argument deduction/substitution failed:
answer.code:51:18: note:   deduced conflicting types for parameter ‘const _Tp’ (‘long long int’ and ‘__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type’ {aka ‘int’})
   51 |         ans = max(ans, prefix_sum0[k] + prefix_sum1[n - 1 - k]);
      |               ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/11/vector:60,
                 from fish.h:1,
                 from answer.code:1:
/usr/include/c++/11/bits/stl_algobase.h:300:5: note: candidate: ‘template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)’
  300 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/11/bits/stl_algobase.h:300:5: note:   template argument deduction/substitution failed:
answer.code:51:18: note:   deduced conflicting types for parameter ‘const _Tp’ (‘long long int’ and ‘__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type’ {aka ‘int’})
   51 |         ans = max(ans, prefix_sum0[k] + prefix_sum1[n - 1 - k]);
      |               ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/11/vector:62,
                 from fish.h:1,
                 from answer.code:1:
/usr/include/c++/11/bits/stl_algo.h:3461:5: note: candidate: ‘template<class _Tp> constexpr _Tp std::max(std::initializer_list<_Tp>)’
 3461 |     max(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/11/bits/stl_algo.h:3461:5: note:   template argument deduction/substitution failed:
answer.code:51:18: note:   mismatched types ‘std::initializer_list<_Tp>’ and ‘long long int’
   51 |         ans = max(ans, prefix_sum0[k] + prefix_sum1[n - 1 - k]);
      |               ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/11/vector:62,
                 from fish.h:1,
                 from answer.code:1:
/usr/include/c++/11/bits/stl_algo.h:3467:5: note: candidate: ‘template<class _Tp, class _Compare> constexpr _Tp std::max(std::initializer_list<_Tp>, _Compare)’
 3467 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/11/bits/stl_algo.h:3467:5: note:   template argument deduction/substitution failed:
answer.code:51:18: note:   mismatched types ‘std::initializer_list<_Tp>’ and ‘long long int’
   51 |         ans = max(ans, prefix_sum0[k] + prefix_sum1[n - 1 - k]);
      |               ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~