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#16380. FUNGHI

الإحصائيات

在吃完邪恶女巫屋子里的所有饼干后,韩塞尔(Hansel)和葛雷特(Gretel)点了一份特大号比萨。比萨很快就送到了,并被切成了八块。韩塞尔和葛雷特准备将比萨平分,使得每个人都能分到完整的“半圆”比萨,换句话说,就是连续的四块比萨。

葛雷特非常喜欢蘑菇,并希望尽可能多地分到蘑菇。由于某些比萨块上的蘑菇较少,而另一些较多,葛雷特让韩塞尔来切比萨,以便她分到的比萨块中包含尽可能多的蘑菇。

请帮助韩塞尔和葛雷特!他们会告诉你这八块比萨中每一块上的蘑菇数量,你的任务是求出葛雷特最多能分到的蘑菇总数。下图展示了下方第二个样例的最佳切法(其中 1. 表示输入数据中给出的第一块比萨):

输入格式

输入共八行。每行包含一个整数 $S_i$($0 \le S_i \le 50$,$i = 1, 2, \dots, 8$)。这些数字依次表示按顺时针顺序排列的各块比萨上的蘑菇数量。

输出格式

输出仅一行,包含所求的数字。

样例

输入样例 1

5
2
1
4
5
1
2
3

输出样例 1

12

输入样例 2

2
6
5
3
3
7
2
6

输出样例 2

19

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