combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:35:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
35 | if (ans == ret.size() + 1)
| ~~~~^~~~~~~~~~~~~~~~~
combo.cpp:37:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
37 | else if (ans == ret.size() + 2)
| ~~~~^~~~~~~~~~~~~~~~~
combo.cpp:39:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
39 | else if (ans == ret.size())
| ~~~~^~~~~~~~~~~~~
combo.cpp:45:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
45 | if (ans == ret.size() + 1)
| ~~~~^~~~~~~~~~~~~~~~~