题解 | #汽水瓶#
汽水瓶
http://www.nowcoder.com/practice/fe298c55694f4ed39e256170ff2c205f
有点复杂了
while True:
try:
n = int(input())
if n != 0:
a = 0
while n >= 3:
n -= 2
a += 1
if n == 2:
a += 1
print(a)
except:
break
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