l, r = map(int, input().split())
if 417 <= l and r <= 420:
    print(0)
    exit()

if 296 <= l and r <= 416:
    print(0)
    exit()
elif 296 <= l and r <= 420:
    print(1)
    exit()

if 1 <= l and r <= 295:
    print(0)
    exit()
elif 1 <= l and r <= 416:
    print(1)
    exit()
elif 1 <= l and r <= 420:
    print(2)
    exit()