Compilare: main.cpp: In member function 'void Trie::insert(const std::string&, int)': main.cpp:15:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 15 | if(pos == str.size()) | ~~~~^~~~~~~~~~~~~ main.cpp: In member function 'int Trie::count(const std::string&, int)': main.cpp:27:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 27 | if(pos == str.size()) | ~~~~^~~~~~~~~~~~~ main.cpp: In member function 'int Trie::lcp(const std::string&, int)': main.cpp:36:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 36 | if(pos == str.size()) | ~~~~^~~~~~~~~~~~~ main.cpp: In member function 'void Trie::erase(const std::string&, int)': main.cpp:46:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 46 | if(pos == str.size()) | ~~~~^~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:75:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 75 | for(auto i = 0; i < inst.size() / 20 * 20 - 20; i++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~