Compilare: user.cpp: In function ‘void citire()’: user.cpp:50:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[start].size(); i++) ^ user.cpp: In function ‘void dijkstra()’: user.cpp:69:46: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[aux.x].size(); i++) ^