Compilare: main.cpp: In function 'int solve()': main.cpp:36:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 36 | for (int e = 0; e < s.size(); ++e) | ~~^~~~~~~~~~ main.cpp:45:40: warning: array subscript has type 'char' [-Wchar-subscripts] 45 | int x = i + dx[s[e]]; | ^ main.cpp:46:40: warning: array subscript has type 'char' [-Wchar-subscripts] 46 | int y = j + dy[s[e]]; | ^ main.cpp:51:37: warning: array subscript has type 'char' [-Wchar-subscripts] 51 | x += dx[s[e]]; | ^ main.cpp:52:37: warning: array subscript has type 'char' [-Wchar-subscripts] 52 | y += dy[s[e]]; | ^