Compilare: main.cpp: In function 'int main()': main.cpp:50:48: warning: array subscript has type 'char' [-Wchar-subscripts] 50 | if(x - 1 >= 0 && (M[x-1][y] == -1 || M[x][y] + 1 < M[x - 1][y])) | ^ main.cpp:52:29: warning: array subscript has type 'char' [-Wchar-subscripts] 52 | M[x - 1][y] = M[x][y] + 1; | ^ main.cpp:56:47: warning: array subscript has type 'char' [-Wchar-subscripts] 56 | if(x + 1 < N && (M[x+1][y] == -1 || M[x][y] + 1 < M[x + 1][y])) | ^ main.cpp:58:29: warning: array subscript has type 'char' [-Wchar-subscripts] 58 | M[x + 1][y] = M[x][y] + 1; | ^ main.cpp:62:28: warning: array subscript has type 'char' [-Wchar-subscripts] 62 | if(y + 1 < N && (M[x][y+1] == -1 || M[x][y] + 1 < M[x][y + 1])) | ^ main.cpp:62:47: warning: array subscript has type 'char' [-Wchar-subscripts] 62 | if(y + 1 < N && (M[x][y+1] == -1 || M[x][y] + 1 < M[x][y + 1])) | ^ main.cpp:62:61: warning: array subscript has type 'char' [-Wchar-subscripts] 62 | if(y + 1 < N && (M[x][y+1] == -1 || M[x][y] + 1 < M[x][y + 1])) | ^ main.cpp:64:15: warning: array subscript has type 'char' [-Wchar-subscripts] 64 | M[x][y + 1] = M[x][y] + 1; | ^ main.cpp:64:29: warning: array subscript has type 'char' [-Wchar-subscripts] 64 | M[x][y + 1] = M[x][y] + 1; | ^ main.cpp:68:29: warning: array subscript has type 'char' [-Wchar-subscripts] 68 | if(y - 1 >= 0 && (M[x][y - 1] == -1 || M[x][y] + 1 < M[x][y - 1])) | ^ main.cpp:68:50: warning: array subscript has type 'char' [-Wchar-subscripts] 68 | if(y - 1 >= 0 && (M[x][y - 1] == -1 || M[x][y] + 1 < M[x][y - 1])) | ^ main.cpp:68:64: warning: array subscript has type 'char' [-Wchar-subscripts] 68 | if(y - 1 >= 0 && (M[x][y - 1] == -1 || M[x][y] + 1 < M[x][y - 1])) | ^ main.cpp:70:15: warning: array subscript has type 'char' [-Wchar-subscripts] 70 | M[x][y - 1] = M[x][y] + 1; | ^ main.cpp:70:29: warning: array subscript has type 'char' [-Wchar-subscripts] 70 | M[x][y - 1] = M[x][y] + 1; | ^