Compilare: user.cpp: In function ‘void citire()’: user.cpp:49:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<G[start].size();i++) ^ user.cpp: In function ‘void dijksta()’: user.cpp:63:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<G[aux.x].size();i++) ^