Compilare: user.cpp: In member function ‘void Graph::initGraph()’: user.cpp:36:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int pairIndex = 0; pairIndex < edges; pairIndex++) { ^ user.cpp: In member function ‘void Graph::findShortestDistances()’: user.cpp:62:44: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int index = 0; index < queue.size(); index++) { ^ user.cpp:65:49: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (; neighborIndex < graph[node].size(); neighborIndex++) { ^ user.cpp: In member function ‘void Graph::showResult()’: user.cpp:78:48: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int index = 0; index < distances.size(); index++) { ^