Compilare: main.cpp: In function 'int dijkstra(std::vector<std::vector<std::pair<int, int> > >&, int, int)': main.cpp:21:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<std::pair<int, int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 21 | if (p.second == v.size()) | ~~~~~~~~~^~~~~~~~~~~ main.cpp:25:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 25 | for (int i = 0; i < v[p.second].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~