Compilare: main.cpp: In function 'int resolve()': main.cpp:27:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 27 | while (screen_position < text_screen.length()) | ~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~ main.cpp:37:30: warning: array subscript has type 'char' [-Wchar-subscripts] 37 | if (!already_was[x]) | ^ main.cpp:39:29: warning: array subscript has type 'char' [-Wchar-subscripts] 39 | already_was[x] = 1; | ^