password.cpp: In function 'std::string merge(std::string, std::string)':
password.cpp:15:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
15 | for (int i = 0; i <= s1.size() && p < s2.size(); i++)
| ~~^~~~~~~~~~~~
password.cpp:15:41: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
15 | for (int i = 0; i <= s1.size() && p < s2.size(); i++)
| ~~^~~~~~~~~~~
password.cpp:20:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
20 | if(b == z.size()){
| ~~^~~~~~~~~~~