combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:15:19: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
15 | while(str.size() != N) {
| ~~~~~~~~~~~^~~~
combo.cpp:19:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
19 | if(press(str) == str.size()) break;
| ~~~~~~~~~~~^~~~~~~~~~~~~