Compilare: user.cpp: In function ‘void dijkstra(const int&)’: user.cpp:59:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0 ; i < L[st.second].size(); i ++) ^ user.cpp: In function ‘bool bellmanFord()’: user.cpp:100:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[ node ].size(); i ++) ^