Compilare: main.cpp: In function 'int dijkstra(int)': main.cpp:23:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 23 | for(int i=0; i<v[nod].size(); i++) //clasic dijkstra init | ~^~~~~~~~~~~~~~ main.cpp:44:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 44 | for(int i=0; i<v[elem.second].size(); i++) | ~^~~~~~~~~~~~~~~~~~~~~~ main.cpp:58:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 58 | for(int j=0; j<v[i].size(); j++) | ~^~~~~~~~~~~~