题解 | #阶乘#
阶乘
https://www.nowcoder.com/practice/e58c8a55162d49c48115bdfa5da7da56
用python有点耍赖，不过思路差不多
from math import factorial
while True:
try:
n = int(input())
m = p = n
if n % 2 == 0: m -= 1
if n % 2 == 1: p -= 1
print(sum(factorial(i) for i in range(1, m+1, 2)), sum(factorial(i) for i in range(2, p+1, 2)))
except:
break
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