CF1890A.Doremy's Paint 3

传统题 时间 2000 ms 内存 256 MiB 3 尝试 1 已通过 1 标签

Doremy's Paint 3

An array b1,b2,,bnb_1, b_2, \ldots, b_n of positive integers is good if all the sums of two adjacent elements are equal to the same value. More formally, the array is good if there exists a kk such that b1+b2=b2+b3==bn1+bn=kb_1 + b_2 = b_2 + b_3 = \ldots = b_{n-1} + b_n = k.

Doremy has an array aa of length nn. Now Doremy can permute its elements (change their order) however she wants. Determine if she can make the array good.

Input

The input consists of multiple test cases. The first line contains a single integer tt (1t1001\le t\le 100) — the number of test cases. The description of the test cases follows.

The first line of each test case contains a single integer nn (2n1002 \le n \le 100) — the length of the array aa.

The second line of each test case contains nn integers a1,a2,,ana_1,a_2,\ldots,a_n (1ai1051 \le a_i \le 10^5).

There are no constraints on the sum of nn over all test cases.

Output

For each test case, print "Yes" (without quotes), if it is possible to make the array good, and "No" (without quotes) otherwise.

You can output the answer in any case (upper or lower). For example, the strings "yEs", "yes", "Yes", and "YES" will be recognized as positive responses.

Note

In the first test case, [8,9][8,9] and [9,8][9,8] are good.

In the second test case, [1,2,1][1,2,1] is good because a1+a2=a2+a3=3a_1+a_2=a_2+a_3=3.

In the third test case, it can be shown that no permutation is good.

Samples

5
2
8 9
3
1 1 2
4
1 1 4 5
5
2 3 3 3 3
4
100000 100000 100000 100000
Yes
Yes
No
No
Yes

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