Compilare: main.cpp: In function 'std::vector<int> suffix(std::string)': main.cpp:18:40: warning: array subscript has type 'char' [-Wchar-subscripts] 18 | for(int i = 0 ; i < n ; i++) r[s[i]].emplace_back(i); | ^ main.cpp: In function 'int main()': main.cpp:57:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 57 | if(l + add < s.size() && s.substr(fun[l+add], s.size() - fun[l+add]) < t) | ~~~~~~~~^~~~~~~~~~ main.cpp:65:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 65 | if(r + add < s.size() && pref(s.substr(fun[r + add],s.size() - fun[r + add]), t)) | ~~~~~~~~^~~~~~~~~~