Epic Transformation
Description
You are given an array $a$ of length $n$ consisting of integers. You can apply the following operation, consisting of several steps, on the array $a$ zero or more times:
- you select two different numbers in the array $a_i$ and $a_j$;
- you remove $i$-th and $j$-th elements from the array.
For example, if $n=6$ and $a=[1, 6, 1, 1, 4, 4]$, then you can perform the following sequence of operations:
- select $i=1, j=5$. The array $a$ becomes equal to $[6, 1, 1, 4]$;
- select $i=1, j=2$. The array $a$ becomes equal to $[1, 4]$.
What can be the minimum size of the array after applying some sequence of operations to it?
The first line contains a single integer $t$ ($1 \le t \le 10^4$). Then $t$ test cases follow.
The first line of each test case contains a single integer $n$ ($1 \le n \le 2 \cdot 10^5$) is length of the array $a$.
The second line of each test case contains $n$ integers $a_1, a_2, \ldots, a_n$ ($1 \le a_i \le 10^9$).
It is guaranteed that the sum of $n$ over all test cases does not exceed $2 \cdot 10^5$.
For each test case, output the minimum possible size of the array after applying some sequence of operations to it.
Input
The first line contains a single integer $t$ ($1 \le t \le 10^4$). Then $t$ test cases follow.
The first line of each test case contains a single integer $n$ ($1 \le n \le 2 \cdot 10^5$) is length of the array $a$.
The second line of each test case contains $n$ integers $a_1, a_2, \ldots, a_n$ ($1 \le a_i \le 10^9$).
It is guaranteed that the sum of $n$ over all test cases does not exceed $2 \cdot 10^5$.
Output
For each test case, output the minimum possible size of the array after applying some sequence of operations to it.
Samples
5
6
1 6 1 1 4 4
2
1 2
2
1 1
5
4 5 4 5 4
6
2 3 2 1 3 1
0
0
2
1
0