Compilare: main.cpp: In function 'int solve()': main.cpp:51:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < s.size(); ++i) ~~^~~~~~~~~~ main.cpp:59:16: warning: array subscript has type 'char' [-Wchar-subscripts] x += dx[s[i]]; ^ main.cpp:60:16: warning: array subscript has type 'char' [-Wchar-subscripts] y += dy[s[i]]; ^ main.cpp:65:17: warning: array subscript has type 'char' [-Wchar-subscripts] x += dx[s[i]]; ^ main.cpp:66:17: warning: array subscript has type 'char' [-Wchar-subscripts] y += dy[s[i]]; ^