Compilare: main.cpp: In member function 'void PH::afisare()': main.cpp:140:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 140 | for(int i = 0; i < ierarhie.size(); i++) | ~~^~~~~~~~~~~~~~~~~ main.cpp:143:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 143 | for(int j = 1; j < ierarhie[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~