Compilare: main.cpp: In function 'void dfsd(int, int)': main.cpp:21:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 21 | for (int i = 0; i < v[nod].size(); i++) | ~~^~~~~~~~~~~~~~~ main.cpp: In function 'void dfsu(int, int)': main.cpp:41:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 41 | for (int i = 0; i < v[nod].size(); i++) | ~~^~~~~~~~~~~~~~~