题解 | #汽水瓶#
汽水瓶
https://www.nowcoder.com/practice/fe298c55694f4ed39e256170ff2c205f
import sys
def buy(number):
sum = 0
while True:
if number == 2:
sum += 1
break
elif number == 1:
break
news = number // 3
number = number - (news) * 3 + news
sum += news
return sum
groups = []
for line in sys.stdin:
groups.append(int(line))
for i in groups[:-1]:
print(buy(i))
