Compilare: main.cpp:191: warning: ignoring '#pragma region utilities' [-Wunknown-pragmas] 191 | #pragma region utilities | main.cpp:242: warning: ignoring '#pragma endregion ' [-Wunknown-pragmas] 242 | #pragma endregion | main.cpp:245: warning: ignoring '#pragma region Homework1_private' [-Wunknown-pragmas] 245 | #pragma region Homework1_private | main.cpp:387: warning: ignoring '#pragma endregion ' [-Wunknown-pragmas] 387 | #pragma endregion | main.cpp:389: warning: ignoring '#pragma region Homework1_solutions' [-Wunknown-pragmas] 389 | #pragma region Homework1_solutions | main.cpp:486: warning: ignoring '#pragma endregion ' [-Wunknown-pragmas] 486 | #pragma endregion | main.cpp:490: warning: ignoring '#pragma region Homework2' [-Wunknown-pragmas] 490 | #pragma region Homework2 | main.cpp:582: warning: ignoring '#pragma endregion ' [-Wunknown-pragmas] 582 | #pragma endregion | main.cpp:584: warning: ignoring '#pragma region Homework2_solve' [-Wunknown-pragmas] 584 | #pragma region Homework2_solve | main.cpp:630: warning: ignoring '#pragma endregion ' [-Wunknown-pragmas] 630 | #pragma endregion | main.cpp: In member function 'int Graph::solve_tree_diameter()': main.cpp:640:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 640 | for (int i = 0; i < distances1.size(); i++) | ~~^~~~~~~~~~~~~~~~~~~ main.cpp:648:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 648 | for (int i = 0; i < distances2.size(); i++) | ~~^~~~~~~~~~~~~~~~~~~