题解 | #汽水瓶#
汽水瓶
https://www.nowcoder.com/practice/fe298c55694f4ed39e256170ff2c205f
import sys
for line in sys.stdin:
a = int(line)
if a == 0:
break
count = 0
while a >= 3:
count += a//3
a = a // 3 + a % 3
if a == 2:
count += 1
print(count)
羡慕疯了