Compilare: main.cpp: In constructor 'Room::Room(int, int, int)': main.cpp:14:7: warning: 'Room::id' will be initialized after [-Wreorder] int id; ^~ main.cpp:13:7: warning: 'int Room::i1' [-Wreorder] int i1, j1, i2, j2; ^~ main.cpp:19:3: warning: when initialized here [-Wreorder] Room(int id, int i1, int j1): ^~~~ main.cpp: In function 'int main()': main.cpp:102:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i < rooms.size(); ++i) { ~~^~~~~~~~~~~~~~