Compilare: main.cpp: In function 'int main()': main.cpp:37:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 37 | for (int i = 0; i < adj[node].size(); ++i) { | ~~^~~~~~~~~~~~~~~~~~ main.cpp:21:9: warning: variable 'parent' set but not used [-Wunused-but-set-variable] 21 | int parent[n + 1]; | ^~~~~~