Main.cpp: In function 'int main()':
Main.cpp:23:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
23 | for (int i = 0; i < s.size(); ++i)
| ~~^~~~~~~~~~
Main.cpp:32:15: 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 (i == s.size() - 1 || ('a' <= s[i + 1] && s[i + 1] <= 'z'))
| ~~^~~~~~~~~~~~~~~