Compilare: user.cpp: In function 'void dfsCV(int)': user.cpp:69: warning: comparison between signed and unsigned integer expressions user.cpp:88: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int coboara(int)': user.cpp:163: warning: comparison between signed and unsigned integer expressions user.cpp:167: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int update(int)': user.cpp:193: warning: comparison between signed and unsigned integer expressions user.cpp:197: warning: suggest parentheses around assignment used as truth value user.cpp: In function 'void dijkstra(int)': user.cpp:277: warning: comparison between signed and unsigned integer expressions user.cpp:302: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int compare(int, int)': user.cpp:145: warning: control reaches end of non-void function