Compilare: main.cpp: In function 'void ReadInput()': main.cpp:59:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 59 | while (j < s.length()) | ~~^~~~~~~~~~~~ main.cpp:49:15: warning: unused variable 'xi' [-Wunused-variable] 49 | int x, y, xi, yi; | ^~ main.cpp:49:19: warning: unused variable 'yi' [-Wunused-variable] 49 | int x, y, xi, yi; | ^~