g_x, g_y = map(int, input().split())

if (g_x * g_y == 0):
	if (g_x == 0 and g_y == 0):
		print(0)
	else:
		print(1)
	
else:
	if (g_x == g_y or g_x == -g_y):
		print(1)
	else:
		print(2)