Compilare: main.cpp: In function 'void dfsd(int, int)': main.cpp:14:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 14 | for (int i=0;i<l[nod].size();i++) { | ~^~~~~~~~~~~~~~ main.cpp: In function 'void dfsu(int, int)': main.cpp:27:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 27 | for (int i=0;i<l[nod].size();i++) { | ~^~~~~~~~~~~~~~