Compilare: main.cpp: In function 'int bfs()': main.cpp:23:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 23 | for (int i=0; i<L[nod].size(); i++){ | ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:56:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 56 | for (i=0; i<L[2*n+1].size(); i++){ | ~^~~~~~~~~~~~~~~~