Compilare: main.cpp: In function 'void build_Trie(node*, std::vector<std::__cxx11::basic_string<char> >&)': main.cpp:37:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::__cxx11::basic_string<char> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 37 | for(int i = 0; i < patterns.size() ;i++){ // iterating over patterns | ~~^~~~~~~~~~~~~~~~~ main.cpp: In instantiation of 'void search_pattern(node*, std::string&, auto:11&) [with auto:11 = std::vector<std::vector<int> >; node = trie_node; std::string = std::__cxx11::basic_string<char>]': main.cpp:151:19: required from here main.cpp:90:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 90 | for(int i = 0; i < text.length() ;i++){ | ~~^~~~~~~~~~~~~~~