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
n = int(input()) x = 1 arr = [ x, # 1 0, # 2 0, # 3+ ] # print(arr) for i in range(n-1): nt = arr[2] + arr[1] arr[2] += arr[1] arr[1] = arr[0] arr[0] = nt # print(arr) print(sum(arr))