题解 | 兔子的数量
def rabbit_count(n):
if n == 1:
return 2
elif n == 2:
return 3
else:
return rabbit_count(n - 1) + rabbit_count(n - 2)
# 输入正整数 n
n = int(input())
if n < 10 and n > 0:
print(rabbit_count(n))
def rabbit_count(n):
if n == 1:
return 2
elif n == 2:
return 3
else:
return rabbit_count(n - 1) + rabbit_count(n - 2)
# 输入正整数 n
n = int(input())
if n < 10 and n > 0:
print(rabbit_count(n))
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