Compilare: user.cpp: In function 'void citire(const char*)': user.cpp:70: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'void dfsCV(int)': user.cpp:91: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'void dijkstra()': user.cpp:231: warning: comparison between signed and unsigned integer expressions user.cpp:268: warning: comparison between signed and unsigned integer expressions