Compilare: main.cpp: In function 'void addstring(std::string, int)': main.cpp:27:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 27 | for(int i=0;i<t.size();i++) | ~^~~~~~~~~ main.cpp:41:15: 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(i+1==t.size()) | ~~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:96:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<nod>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 96 | for(int i=0;i<trie.size();i++) | ~^~~~~~~~~~~~