Compilare: main.cpp: In function 'void ins(std::string, int, int)': main.cpp:32:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 32 | if (pos!=(s.size())) | ~~~^~~~~~~~~~~~ main.cpp: In function 'void ers(std::string, int, int)': main.cpp:41:13: 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 (pos!=(s.size())) | ~~~^~~~~~~~~~~~ main.cpp: In function 'void app(std::string, int, int)': main.cpp:51:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 51 | if (pos!=(s.size()) && trie[nodeidx].muchii[s[pos]-'a'+1]!=0) | ~~~^~~~~~~~~~~~ main.cpp: In function 'void lgpref(int, int)': main.cpp:72:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 72 | if (pos!=(s.size()) && trie[nodeidx].muchii[s[pos]-'a'+1]!=0) | ~~~^~~~~~~~~~~~