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題目 1384:

I think it's hard

時間限制: 2s 內存限制: 96MB 提交: 120 解決: 33

題目描述

Xiao Ming is only seven years old, Now I give him some numbers, and ask him what is the second
largest sum if he can choose a part of them. For example, if I give him 1 、 2 、 3 ， then he should tell
me 5 as 6 is the largest and 5 is the second. I think it is too hard for him, isn ’ t it?

輸入格式

Standard input will contain multiple test cases. The first line of the input is a single integer T (1 <= T <=
10) which is the number of test cases. And it will be followed by T consecutive test cases.
Each test case starts with a line containing an integer N (1<N<10) , the number I give Xiao Ming . The
second line contains N Integer numbers ai (-10<ai<10),

輸出格式

For each test case, output the answer.

樣例輸入

2
3
1 2 3
4
0 1 2 3

樣例輸出

5
5

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