Compilare: main.cpp: In function 'int solve()': main.cpp:38:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int e = 0; e < s.size(); ++e) ~~^~~~~~~~~~ main.cpp:47:25: warning: array subscript has type 'char' [-Wchar-subscripts] int x = i + dx[s[e]]; ^ main.cpp:48:25: warning: array subscript has type 'char' [-Wchar-subscripts] int y = j + dy[s[e]]; ^ main.cpp:53:19: warning: array subscript has type 'char' [-Wchar-subscripts] x += dx[s[e]]; ^ main.cpp:54:19: warning: array subscript has type 'char' [-Wchar-subscripts] y += dy[s[e]]; ^