/in/foo.cc: In function 'void GetNext(std::__cxx11::string&, int, int*)':
/in/foo.cc:12:18: warning: array subscript has type 'char' [-Wchar-subscripts]
         next[p[i]] = i;
                  ^
/in/foo.cc: In function 'void Sunday(std::__cxx11::string&, int, std::__cxx11::string&, int)':
/in/foo.cc:29:36: warning: array subscript has type 'char' [-Wchar-subscripts]
             i += (m - next[s[i + m]]);
                                    ^