P1009 [NOIP1998 普及组] 阶乘之和
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P1009 [NOIP1998 普及组] 阶乘之和
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Mike20242024楼主2024/8/23 11:52

n = int(input()) r = 0 while n != 0: p = 1 m = n while m != 1: p *= m m -= 1 r += p n -= 1 print(r)

2024/8/23 11:52
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