Compilare: main.cpp: In function 'bool findStr(Trie*, const string&, int)': main.cpp:29:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | if (idx == s.size()) { | ~~~~^~~~~~~~~~~ main.cpp: In function 'void addStr(Trie*, const string&, int)': main.cpp:40:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 40 | if (idx == s.size()) { | ~~~~^~~~~~~~~~~ main.cpp: In function 'bool cmp(const string&, const string&)': main.cpp:16:1: warning: control reaches end of non-void function [-Wreturn-type] 16 | } | ^