Compilare: main.cpp: In function 'int main()': main.cpp:18:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 18 | while(i<s.size()) | ~^~~~~~~~~ main.cpp:36:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 36 | if(i==s.size()) | ~^~~~~~~~~~ main.cpp:41:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 41 | while(i<s.size() && (s[i] != ')' && s[i] != '(' && s[i] != ',')) | ~^~~~~~~~~ main.cpp:51:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 51 | while(i<s.size() && (s[i] != ')' && s[i] != '(' && s[i] != ',')) | ~^~~~~~~~~ main.cpp:62:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::__cxx11::basic_string<char> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 62 | for(int i=0;i<ans.size();i++) | ~^~~~~~~~~~~