Compilare: main.cpp: In function 'int main()': main.cpp:73:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 73 | for (int i = 0; i < res.size(); i++) | ~~^~~~~~~~~~~~ main.cpp:75:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 75 | for (int j = 0; j < res[i].size(); j++) | ~~^~~~~~~~~~~~~~~ main.cpp:60:6: warning: unused variable 'n_comp' [-Wunused-variable] 60 | int n_comp = 0; | ^~~~~~