Compilare: main.cpp: In function 'void insertState(const State&, char, int)': main.cpp:43:40: warning: array subscript has type 'char' [-Wchar-subscripts] int16_t x = from.x + dx[orientation], y = from.y + dy[orientation]; ^ main.cpp:43:70: warning: array subscript has type 'char' [-Wchar-subscripts] int16_t x = from.x + dx[orientation], y = from.y + dy[orientation]; ^ main.cpp:47:28: warning: array subscript has type 'char' [-Wchar-subscripts] if (d[x][y][orientation] > diff + d[from.x][from.y][from.orientation]) { ^ main.cpp:47:73: warning: array subscript has type 'char' [-Wchar-subscripts] if (d[x][y][orientation] > diff + d[from.x][from.y][from.orientation]) { ^ main.cpp:48:28: warning: array subscript has type 'char' [-Wchar-subscripts] d[x][y][orientation] = diff + d[from.x][from.y][from.orientation]; ^ main.cpp:48:73: warning: array subscript has type 'char' [-Wchar-subscripts] d[x][y][orientation] = diff + d[from.x][from.y][from.orientation]; ^ main.cpp: In function 'void solve()': main.cpp:58:39: warning: array subscript has type 'char' [-Wchar-subscripts] d[start.first][start.second][k] = 0; ^