题解 | #统计每个月兔子的总数#
统计每个月兔子的总数
https://www.nowcoder.com/practice/1221ec77125d4370833fd3ad5ba72395
import sys
m = int(input())
def cal_rabbit(mon):
if mon <1:
return 0
if mon == 1:
return 1
return cal_rabbit(mon-1)+cal_rabbit(mon-2)
print(cal_rabbit(m))