Compilare: user.cpp: In function ‘void find_cycle(int)’: user.cpp:24:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0 ; i < G[node].size() ; ++i) ^ user.cpp: In function ‘int dynamik(int, bool)’: user.cpp:60:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0 ; i < G[node].size() ; ++i) ^ user.cpp:69:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0 ; i < G[node].size() ; ++i) ^