Compilare: main.cpp: In function 'int DFS(int)': main.cpp:19:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 19 | for(int i=0;i<a[nod].size();i++) | ~^~~~~~~~~~~~~~ main.cpp:27:1: warning: no return statement in function returning non-void [-Wreturn-type] 27 | } | ^