Compilare: main.cpp: In function 'void bfs(int)': main.cpp:17:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 17 | for(int i=0;i<v[nod].size();i++){ | ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:48:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 48 | for(int j=0;j<v[i].size();j++){ | ~^~~~~~~~~~~~ main.cpp:63:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 63 | for(int i=0;i<conex[nod].size();i++){ | ~^~~~~~~~~~~~~~~~~~