Compilare: main.cpp: In function 'void DFS(int, int)': main.cpp:25:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 25 | for(int i=0; i<tree[nod].size(); i++) | ~^~~~~~~~~~~~~~~~~ main.cpp: In function 'int lca(int, int)': main.cpp:48:1: warning: no return statement in function returning non-void [-Wreturn-type] 48 | } | ^