Compilare: main.cpp: In function 'void DFS(int, int)': main.cpp:18:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 18 | for (int i = 0; i < G[node].size(); ++ i) { | ~~^~~~~~~~~~~~~~~~ main.cpp:33:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 33 | for (int i = 0; i < G[node].size(); ++ i) { | ~~^~~~~~~~~~~~~~~~ main.cpp:82:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 82 | for (int i = 0; i < G[node].size(); ++ i) { | ~~^~~~~~~~~~~~~~~~ main.cpp:85:29: warning: 'index' may be used uninitialized in this function [-Wmaybe-uninitialized] 85 | if (u != daddy && u != index) { | ~~^~~~~~~~