Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:22:12: error: cannot convert ‘std::priority_queue<_Tp, _Sequence, _Compare>::empty<int, std::vector<int, std::allocator<int> >, std::less<int> >’ from type ‘bool (std::priority_queue<int>::)()const’ to type ‘bool’ while (!a.empty){ ^ user.cpp:22:12: error: in argument to unary ! user.cpp:25:5: error: cannot convert ‘std::priority_queue<_Tp, _Sequence, _Compare>::top<int, std::vector<int, std::allocator<int> >, std::less<int> >’ from type ‘const value_type& (std::priority_queue<int>::)()const {aka const int& (std::priority_queue<int>::)()const}’ to type ‘int’ y = b.top; ^