Compilare: main.cpp: In function 'int bfs()': main.cpp:30:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 30 | for(int j=0;j<la[nod].size();j++) | ~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:74:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 74 | for(i=0;i<la[n+n+1].size();i++) | ~^~~~~~~~~~~~~~~~~ main.cpp:95:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 95 | for (j=0;j<la[i].size();j++) | ~^~~~~~~~~~~~~