Compilare: main.cpp: In constructor 'Node::Node(int)': main.cpp:21:11: warning: 'Node::next' will be initialized after [-Wreorder] 21 | Node* next; | ^~~~ main.cpp:20:9: warning: 'int Node::rank' [-Wreorder] 20 | int rank; | ^~~~ main.cpp:12:5: warning: when initialized here [-Wreorder] 12 | Node(int key) : key(key), left(nullptr), right(nullptr), next(nullptr), rank(0) | ^~~~ main.cpp: In member function 'int RankPairingHeap::pop()': main.cpp:94:15: warning: unused variable 'new_node' [-Wunused-variable] 94 | Node* new_node = root; | ^~~~~~~~