题解 | #牛牛的西格玛#
牛牛的西格玛
https://www.nowcoder.com/practice/c6b750ee8853484f8dbf14b9531b501f
def sum(n):
if n==1:
return 1
else:
return n+sum(n-1)
n=int(input())
print(sum(n))
牛牛的西格玛
https://www.nowcoder.com/practice/c6b750ee8853484f8dbf14b9531b501f
def sum(n):
if n==1:
return 1
else:
return n+sum(n-1)
n=int(input())
print(sum(n))
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