CF1857A.Array Coloring

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

Array Coloring

You are given an array consisting of nn integers. Your task is to determine whether it is possible to color all its elements in two colors in such a way that the sums of the elements of both colors have the same parity and each color has at least one element colored.

For example, if the array is [1,2,4,3,2,3,5,41,2,4,3,2,3,5,4], we can color it as follows: [$\color{blue}{1},\color{blue}{2},\color{red}{4},\color{blue}{3},\color{red}{2},\color{red}{3},\color{red}{5},\color{red}{4}$], where the sum of the blue elements is 66 and the sum of the red elements is 1818.

Input

The first line contains an integer tt (1t10001 \le t \le 1000) — the number of test cases.

Each test case begins with a line containing an integer nn (2n502 \le n \le 50) — the length of the array aa.

The next line contains nn integers a1,a2,,ana_1,a_2, \dots, a_n (1ai501 \le a_i \le 50) — the elements of the array aa.

Output

For each test case, output "YES" (without quotes) if it is possible to color the array in two colors in such a way that the sums of the elements of both colors have the same parity and each color has at least one element colored, and "NO" otherwise.

You can output "Yes" and "No" in any case (for example, the strings "yES", "yes", and "Yes" will be recognized as correct answers).

Note

The first sample is described in the statement.

In the second sample, there are only two colorings [4,7][\color{blue}{4},\color{red}{7}] and [4,7][\color{red}{4},\color{blue}{7}] , but in both cases the parity of sums is different.

In the third sample, you can color [3,9,8][\color{blue}{3},\color{blue}{9},\color{red}{8}] and 1212 and 88 are both even.

Samples

7
8
1 2 4 3 2 3 5 4
2
4 7
3
3 9 8
2
1 7
5
5 4 3 2 1
4
4 3 4 5
2
50 48
YES
NO
YES
YES
NO
YES
YES

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