Compilare: main.cpp: In function 'void DFS(int)': main.cpp:35:24: warning: comparison of integer expressions of different signedness: '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'} and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 35 | if (nextChild[nod] >= edges[nod].size() || (edges[nod][nextChild[nod]].second == parent[nod] && nextChild[nod] + 1 >= edges[nod].size())) main.cpp:35:120: warning: comparison of integer expressions of different signedness: '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'} and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 35 | if (nextChild[nod] >= edges[nod].size() || (edges[nod][nextChild[nod]].second == parent[nod] && nextChild[nod] + 1 >= edges[nod].size())) main.cpp:48:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 48 | if ((currentNextChild + 1 < edges[nod].size() && edges[nod][currentNextChild+1].second != parent[nod]) || currentNextChild + 2 < edges[nod].size()) | ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~ main.cpp:48:132: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 48 | if ((currentNextChild + 1 < edges[nod].size() && edges[nod][currentNextChild+1].second != parent[nod]) || currentNextChild + 2 < edges[nod].size()) | ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~