Compilare: user.cpp: In function 'void dfsCV(int)': user.cpp:74: warning: comparison between signed and unsigned integer expressions user.cpp:93: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int coboara(int)': user.cpp:171: warning: comparison between signed and unsigned integer expressions user.cpp:175: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int update(int)': user.cpp:201: warning: comparison between signed and unsigned integer expressions user.cpp:205: warning: suggest parentheses around assignment used as truth value user.cpp: In function 'void dijkstra(int)': user.cpp:297: warning: comparison between signed and unsigned integer expressions user.cpp:323: warning: comparison between signed and unsigned integer expressions