Compilare: main.cpp: In function 'void add(Node*&, std::string, int)': main.cpp:27:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 27 | if(poz==s.length()) | ~~~^~~~~~~~~~~~ main.cpp:32:11: 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(poz==s.length()-1) | ~~~^~~~~~~~~~~~~~ main.cpp: In function 'void rem(Node*&, std::string, int)': main.cpp:39:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 39 | if(poz==s.length()) | ~~~^~~~~~~~~~~~ main.cpp:44:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 44 | if(poz==s.length()-1) | ~~~^~~~~~~~~~~~~~ main.cpp: In function 'int get_freq(Node*&, std::string&, int)': main.cpp:51:11: 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(poz==s.length()) | ~~~^~~~~~~~~~~~ main.cpp:55:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 55 | if(poz==s.length()-1) | ~~~^~~~~~~~~~~~~~ main.cpp: In function 'int lcp(Node*&, std::string, int, int)': main.cpp:62:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 62 | if(poz==s.length()) | ~~~^~~~~~~~~~~~