Compilare: user.cpp: In function ‘int main()’: user.cpp:86:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if ((currentXor ^ bestXorInfo.Value) > bestXor) { ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~ user.cpp:91:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] else if ((currentXor ^ bestXorInfo.Value) == bestXor && i - bestXorInfo.Position - 1 < bestRight - bestLeft) { ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~ user.cpp: In member function ‘BestXorInfo TrieNode::GetBestXor(const char*)’: user.cpp:54:2: warning: control reaches end of non-void function [-Wreturn-type] } ^