xy = input()
xy_spl = xy.split()
x = int(xy_spl[0])
y = int(xy_spl[1])
if (x == 0 and y == 0):
  print(0)
elif (x == 0 or y == 0):
  print(1)
elif (x == y or x == -y):
  print(1)
else:
  print(2)