题解 | #游游的数字圈#
游游的数字圈
https://www.nowcoder.com/practice/16eafa41a4a242b8870cb2c5420ae089
s = input()
cnt = 0
for i in s:
if i == '0':
cnt += 1
elif i == '6':
cnt += 1
elif i == '9':
cnt += 1
elif i == '8':
cnt += 2
print(cnt)
