foo.cc: In function 'int main(int, char**, char**)':
foo.cc:30:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
30 | for (int i = 0; i < s.size(); i++) {
| ~~^~~~~~~~~~
foo.cc:58:23: 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]
58 | for (int i = 0; i < ans11.size(); i++) cout << ans11[i] << '\n';
| ~~^~~~~~~~~~~~~~
foo.cc:61:23: 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]
61 | for (int i = 0; i < ans21.size(); i++) cout << ans21[i] << '\n';
| ~~^~~~~~~~~~~~~~
[Hydro](https://hydro.ac)提供评测服务