Compilare: user.cpp: In member function ‘int& SuffixAutomaton::node::Vector::operator[](char)’: user.cpp:27:32: warning: array subscript has type ‘char’ [-Wchar-subscripts] int d = toRaw[t]; ^ user.cpp: In member function ‘int SuffixAutomaton::node::Vector::count(char)’: user.cpp:34:32: warning: array subscript has type ‘char’ [-Wchar-subscripts] int d = toRaw[t]; ^ user.cpp: In function ‘int main()’: user.cpp:97:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("prefix2.in", "r", stdin); ^ user.cpp:98:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("prefix2.out", "w", stdout); ^