Compilare: user.cpp: In function ‘void Precompute(int)’: user.cpp:71:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < leaves.size(); i++) ^ user.cpp:79:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < leaves.size(); i++) ^ user.cpp: In function ‘long long int Try(int)’: user.cpp:108:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < leaves.size(); i++) ^