Inquiry I
题意：
n = int(input()) lst = [*map(int, input().split())] # left 记录数组元素平方的前缀和, right 记录数组元素后缀和 left, right = 0, sum(lst) res = 0 for i in lst: left += i**2 right -= i res = max(res, left*right) print(res)
原文：https://www.cnblogs.com/ZhengQC/p/12501156.html