def distance(inp):
    if inp >= 0:
        return inp
    else:
        return -1 * inp

x, y = map(int, input().split())

if (x == 0) and (y == 0):
    print(0)
elif (x == 0) or (y == 0):
    print(1)
elif distance(x) == distance(y):
    print(1)
else:
    print(2)