def min_moves(Gx, Gy):
    rook_moves = 0
    if Gx != 0:
        rook_moves += 1
    if Gy != 0:
        rook_moves += 1
    
    bishop_moves = 2
    
    if abs(Gx) == abs(Gy):
        bishop_moves = 1
    
    if Gx == 0 and Gy == 0:
        return 0
    
    return min(rook_moves, bishop_moves)

Gx, Gy = map(int, input().split())
print(min_moves(Gx, Gy))