Compilare: main.cpp: In function 'void afisareMatrice(std::vector<std::vector<int> >)': main.cpp:57:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 57 | for(int i = 0; i < matrix.size(); i++) | ~~^~~~~~~~~~~~~~~ main.cpp:60:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 60 | for(int j = 0; j < matrix[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~~