Compilare: main.cpp: In function 'int Djikstra(int, std::vector<std::vector<int> >*)': main.cpp:42:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 42 | for (int i = 0; i < adjList[u].size(); i++) { | ~~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:101:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 101 | for (int j = 0; j < adjList[u].size(); j++) { | ~~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int Djikstra(int, std::vector<std::vector<int> >*)': main.cpp:25:36: warning: control reaches end of non-void function [-Wreturn-type] 25 | priority_queue<pair<int, int>> Q; | ^