题解 | #牛牛学数列2#
牛牛学数列2
http://www.nowcoder.com/practice/fc72951f52984f3abd286d82eeffacba
a= int(input())
summ=0
if a ==0:
print()
else:
for i in range(1,a+1):
summ += 1/i
print(f'{summ:.6f}')
牛牛学数列2
http://www.nowcoder.com/practice/fc72951f52984f3abd286d82eeffacba
a= int(input())
summ=0
if a ==0:
print()
else:
for i in range(1,a+1):
summ += 1/i
print(f'{summ:.6f}')
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