combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:28:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
28 | if(press(s+v[0])==s.size()+1) s+=v[0];
| ~~~~~~~~~~~~~^~~~~~~~~~~~
combo.cpp:29:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
29 | else if(press(s+v[1])==s.size()+1) s+=v[1];
| ~~~~~~~~~~~~~^~~~~~~~~~~~