Compilare: user.cpp: In function ‘int Solve()’: user.cpp:25:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] v[x1][y1][tr[c]] = 0; ^ user.cpp:26:30: warning: array subscript has type ‘char’ [-Wchar-subscripts] Q[0].push( { x1, y1, tr[c] } ); ^ user.cpp: In function ‘int main()’: user.cpp:65:51: warning: array subscript has type ‘char’ [-Wchar-subscripts] for (j = 0; j <= m; j++) d[i][j] = tr[S[j]]; ^