password.cpp: In function 'std::string merge(std::string, std::string)':
password.cpp:12:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
12 | while(p1 <= a.size() && p2 < b.size()){
| ~~~^~~~~~~~~~~
password.cpp:12:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
12 | while(p1 <= a.size() && p2 < b.size()){
| ~~~^~~~~~~~~~
password.cpp:15:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
15 | if(query(q) == q.size()){
| ~~~~~~~~~^~~~~~~~~~~
password.cpp: In function 'std::string guess(int, int)':
password.cpp:43:12: error: declaration of 'std::string s' shadows a parameter
43 | string s;
| ^
password.cpp:30:25: note: 'int s' previously declared here
30 | string guess(int n, int s){
| ~~~~^