combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:27:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
27 | for (int i = 0; i < LETTERS.size(); i++) {
| ~~^~~~~~~~~~~~~~~~
combo.cpp:37:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
37 | if (res == currString.size()) {
| ~~~~^~~~~~~~~~~~~~~~~~~~
combo.cpp:39:18: 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 (res == currString.size() + 1) {
| ~~~~^~~~~~~~~~~~~~~~~~~~~~~~