combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:35:21: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
35 | while (s.size() < n - 1){
| ~~~~~~~~~^~~~~~~
combo.cpp:39:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
39 | if (coins == s.size()) s += moves[2];
| ~~~~~~^~~~~~~~~~~
combo.cpp:40:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
40 | else if (coins == s.size() + 1) s += moves[0];
| ~~~~~~^~~~~~~~~~~~~~~
combo.cpp:41:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
41 | else if (coins == s.size() + 2) s += moves[1];
| ~~~~~~^~~~~~~~~~~~~~~
combo.cpp:47:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
47 | if (press(guess) == s.size() + 1){
| ~~~~~~~~~~~~~^~~~~~~~~~~~~~~