Compilare: main.cpp: In member function 'void Graph::dijkstra(int, std::vector<long long int>&, std::vector<int>&)': main.cpp:76:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 76 | for (int i = 0; i < edges[node].size(); i ++) { | ~~^~~~~~~~~~~~~~~~~~~~ main.cpp:71:19: warning: unused variable 'c' [-Wunused-variable] 71 | long long c = heap.top().second; | ^ main.cpp: In member function 'void Graph::printRoad(int, int, std::vector<int>&)': main.cpp:120:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 120 | for (int i = 0; i < road.size(); i ++) { | ~~^~~~~~~~~~~~~ main.cpp: In member function 'void Graph::solve()': main.cpp:108:14: warning: 'x' may be used uninitialized [-Wmaybe-uninitialized] 108 | printRoad(x, c, cParent); | ~~~~~~~~~^~~~~~~~~~~~~~~ main.cpp:96:9: note: 'x' was declared here 96 | int x; | ^