Compilare: main.cpp: In function 'void BFS(int)': main.cpp:82:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 82 | for(int i=0;i<G[val].size();i++){ | ~^~~~~~~~~~~~~~ main.cpp: In function 'void F()': main.cpp:95:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 95 | for(int i=0;i<G[nod].size();i++){ | ~^~~~~~~~~~~~~~