Compilare: main.cpp: In function 'bool findStr(Trie*, const string&, int)': main.cpp:30:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 30 | if (idx == s.size()) { | ~~~~^~~~~~~~~~~ main.cpp: In function 'void addStr(Trie*, const string&, int)': main.cpp:41:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 41 | if (idx == s.size()) { | ~~~~^~~~~~~~~~~