[백준] 1105 파이썬, pyhton

start, end = map(int, input().split())

a = end - start

answer = 0
k = 0
while(1):
  # print(a, 10**k, int(start/(10**k))% 10)
  if a > 10 ** k:
    k += 1
  else:
    if int(start/(10**k))%10 == 8:
      if int((start+a)/(10**k))%10 == 8:
        answer += 1
    k += 1
    if 10 ** k > end:
      break

print(answer)