题解 | #统计每个月兔子的总数#
统计每个月兔子的总数
http://www.nowcoder.com/practice/1221ec77125d4370833fd3ad5ba72395
try:
num = int(input())
if num <=2 :
print(1)
continue
a,b,c = 1,1,0
for i in range(2,num):
c = b+a
a = b
b = c
print(c)
except:
break
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