Compilare: main.cpp: In function 'std::unordered_map<char, int> parseaza(std::string&)': main.cpp:49:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 49 | while (i < term.size() && isdigit(term[i])) { | ~~^~~~~~~~~~~~~ main.cpp:58:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 58 | if (i < term.size() && (term[i] == 'x' || term[i] == 'y' || term[i] == 'z' || term[i] == 't')) | ~~^~~~~~~~~~~~~