题解 | #牛牛学数列2#
牛牛学数列2
https://www.nowcoder.com/practice/fc72951f52984f3abd286d82eeffacba
递龟
def f(n):
if n == 1:
return 1
return 1/n + f(n-1)
n = int(input())
print(f'{f(n):.6f}')
normal
n = int(input())
sum = 0
for i in range(1,n+1):
sum += 1/i
print(f'{sum:.6f}')
#题解#
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