Compilare: main.cpp: In function 'void ins(std::string, int, Node&)': main.cpp:33:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 33 | if (pos!=(s.size()-1)) | ~~~^~~~~~~~~~~~~~ main.cpp: In function 'void ers(std::string, int, Node&)': main.cpp:42:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 42 | if (pos!=(s.size()-1)) | ~~~^~~~~~~~~~~~~~ main.cpp: In function 'void app(std::string, int, Node)': main.cpp:52:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 52 | if (pos!=(s.size()-1) && node.muchii[s[pos]-'a'+1]!=0) | ~~~^~~~~~~~~~~~~~ main.cpp: In function 'void lgpref(std::string, int, Node)': main.cpp:69:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 69 | if (pos!=(s.size()-1)) | ~~~^~~~~~~~~~~~~~