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 from functools import lru_cache n = int(input()) @lru_cache def get_n(n): if n == 1 or n == 2: return 1 return get_n(n-1)+get_n(n-2) print(get_n(n))
斐波那契数列
1 1 2 3 5 8 f(n-1) + f(n-2)