Compilare: main.cpp: In member function 'Vertex Graph::dijkstra(long long int, long long int, long long int)': main.cpp:122:36: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<Vertex>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 122 | for (l l i = 0; i < this->graph[front.vertexNo].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:97:68: warning: control reaches end of non-void function [-Wreturn-type] 97 | priority_queue<Vertex, vector<Vertex>, Graph::CompareTime> heap; | ^~~~