Compilare: user.cpp: In constructor ‘AhoCorasickAutomaton::AhoCorasickAutomaton(int)’: user.cpp:101:7: warning: ‘AhoCorasickAutomaton::required_length_’ will be initialized after [-Wreorder] int required_length_; ^ user.cpp:100:9: warning: ‘AhoCorasickAutomaton::Node* AhoCorasickAutomaton::root_’ [-Wreorder] Node* root_; ^ user.cpp:19:12: warning: when initialized here [-Wreorder] explicit AhoCorasickAutomaton(int required_length) : required_length_ ^ user.cpp: In function ‘int main()’: user.cpp:186:27: warning: array subscript has type ‘char’ [-Wchar-subscripts] it = map_letter[it]; ^