Compilare: main.cpp: In function 'int main()': main.cpp:29:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | for (int i = 0;i < s.length();i++) | ~~^~~~~~~~~~~~ main.cpp:42:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<std::__cxx11::basic_string<char>, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 42 | for (j = 0;j < v.size() && !exista;j++) | ~~^~~~~~~~~~ main.cpp:58:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 58 | while (i < s.size() && isdigit(s[i])) | ~~^~~~~~~~~~ main.cpp:76:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 76 | while (i < s.size() && isdigit(s[i])) | ~~^~~~~~~~~~ main.cpp:86:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<std::__cxx11::basic_string<char>, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 86 | for (int i = 0;i < v.size();i++) | ~~^~~~~~~~~~