Compilare: user.cpp: In function ‘int bfs(int)’: user.cpp:23:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v.size(); ++i) ^ user.cpp: In function ‘int binar()’: user.cpp:55:9: warning: ‘mid’ may be used uninitialized in this function [-Wmaybe-uninitialized] return mid; ^