Compilare: main.cpp: In function 'void dfs(int, std::vector<bool>&)': main.cpp:13:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 13 | for (int i = 0; i < adj[node].size(); i++) { | ~~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:41:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 41 | for (int i = 0; i < bars.size(); i++) { | ~~^~~~~~~~~~~~~ main.cpp:55:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 55 | for (int i = 0; i < nev_nodes.size(); i++) { | ~~^~~~~~~~~~~~~~~~~~