CF1856B.Good Arrays

传统题 时间 2000 ms 内存 256 MiB 4 尝试 1 已通过 1 标签

Good Arrays

You are given an array of positive integers aa of length nn.

Let's call an array of positive integers bb of length nn good if:

  1. aibia_i \neq b_i for all ii from 11 to nn,
  2. a1+a2++an=b1+b2++bna_1 + a_2 +\ldots + a_n = b_1 + b_2 + \ldots + b_n.

Does a good array exist?

Input

Each test contains multiple test cases. The first line of input contains a single integer tt (1t1041 \le t \le 10^4) — the number of test cases. The description of the test cases follows.

The first line of each test case contains a single integer nn (1n1051 \le n \le 10^5) — the length of the array aa.

The second line of each test case contains nn integers a1,a2,,ana_1, a_2, \dots, a_n (1ai1091 \le a_i \le 10 ^ 9) — the elements of the array aa.

It is guaranteed that the sum of nn over all test cases does not exceed 10510^5.

Output

For each test case, output "YES" (without quotes) if there exists a good array, 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, a possible good array is [3,3,3][3, 3, 3]. Some examples of not good arrays are:

  • [8,0,1][8, 0, 1] — the array does not consist of only positive integers,
  • [5,2,4][5, 2, 4] — the array does not have the same sum as the given array,
  • [5,2,2][5, 2, 2] — the third element is equal to the third element of the given array.

In the second test case, [1,1][1, 1] is the only array of positive integers of length 22 that has the sum of it's elements equal to 22. Since [1,1][1, 1] is not a good array, the answer is "NO".

Samples

6
3
6 1 2
2
1 1
4
3 1 2 4
1
17
5
1 2 1 1 1
3
618343152 819343431 1000000000
YES
NO
YES
NO
NO
YES

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