Compilare: user.cpp: In function 'void dfsCV(int)': user.cpp:98: warning: comparison between signed and unsigned integer expressions user.cpp:121: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int coboara(int)': user.cpp:208: warning: comparison between signed and unsigned integer expressions user.cpp:212: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int update(int)': user.cpp:239: warning: comparison between signed and unsigned integer expressions user.cpp:243: warning: suggest parentheses around assignment used as truth value user.cpp: In function 'void dijkstra(int)': user.cpp:361: warning: comparison between signed and unsigned integer expressions user.cpp:393: warning: comparison between signed and unsigned integer expressions