题解 | #汽水瓶#
汽水瓶
https://www.nowcoder.com/practice/fe298c55694f4ed39e256170ff2c205f
import sys
def compute(num1):
global drinknum
if num1 <2:
return 0
if num1 == 2:
drinknum +=1
else:
tamp1 = num1 //3
drinknum += tamp1
compute(tamp1+num1%3)
for line in sys.stdin:
a = int(line.strip())
if a == 0: break
drinknum = 0
compute(a)
print(drinknum)
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