题解 | 统计每个月兔子的总数
import sys
while True:
try:
a = int(input())
def fun(n):
dict0={1:1,2:1,3:2,4:3,5:5,6:8,7:13}
if n in dict0:
return dict0[n]
else:
return fun(n-2)+fun(n-1)
print(fun(a))
except:
break
