CF1691A.Beat The Odds

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

Beat The Odds

Given a sequence a1,a2,,ana_1, a_2, \ldots, a_n, find the minimum number of elements to remove from the sequence such that after the removal, the sum of every 22 consecutive elements is even.

Input

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

The first line of each test case contains a single integer nn (3n1053 \le n \le 10^5).

The second line of each test case contains nn integers a1,a2,,ana_1, a_2,\dots,a_n (1ai1091\leq a_i\leq10^9) — elements of the sequence.

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

Output

For each test case, print a single integer — the minimum number of elements to remove from the sequence such that the sum of every 22 consecutive elements is even.

Note

In the first test case, after removing 33, the sequence becomes [2,4,6,8][2,4,6,8]. The pairs of consecutive elements are {[2,4],[4,6],[6,8]}\{[2, 4], [4, 6], [6, 8]\}. Each consecutive pair has an even sum now. Hence, we only need to remove 11 element to satisfy the condition asked.

In the second test case, each consecutive pair already has an even sum so we need not remove any element.

Samples

2
5
2 4 3 6 8
6
3 5 9 7 1 3
1
0

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