Codeforces Round 1002 (Div. 2) |
---|
Finished |
An array is called good if for any element $$$x$$$ that appears in this array, it holds that $$$x$$$ appears at least twice in this array. For example, the arrays $$$[1, 2, 1, 1, 2]$$$, $$$[3, 3]$$$, and $$$[1, 2, 4, 1, 2, 4]$$$ are good, while the arrays $$$[1]$$$, $$$[1, 2, 1]$$$, and $$$[2, 3, 4, 4]$$$ are not good.
Milya has two good arrays $$$a$$$ and $$$b$$$ of length $$$n$$$. She can rearrange the elements in array $$$a$$$ in any way. After that, she obtains an array $$$c$$$ of length $$$n$$$, where $$$c_i = a_i + b_i$$$ ($$$1 \le i \le n$$$).
Determine whether Milya can rearrange the elements in array $$$a$$$ such that there are at least $$$3$$$ distinct elements in array $$$c$$$.
Each test consists of multiple test cases. The first line contains a single integer $$$t$$$ ($$$1 \le t \le 1000$$$) — the number of test cases. The description of the test cases follows.
The first line of each test case contains a single integer $$$n$$$ ($$$3 \le n \le 50$$$) — the length of the arrays $$$a$$$ and $$$b$$$.
The second line of each test case contains $$$n$$$ integers $$$a_1, a_2, \ldots, a_n$$$ ($$$1 \le a_i \le 10^9$$$) — the elements of the array $$$a$$$.
The third line of each test case contains $$$n$$$ integers $$$b_1, b_2, \ldots, b_n$$$ ($$$1 \le b_i \le 10^9$$$) — the elements of the array $$$b$$$.
For each test case, output $$$«$$$YES$$$»$$$ (without quotes) if it is possible to obtain at least $$$3$$$ distinct elements in array $$$c$$$, and $$$«$$$NO$$$»$$$ otherwise.
You can output each letter in any case (for example, $$$«$$$YES$$$»$$$, $$$«$$$Yes$$$»$$$, $$$«$$$yes$$$»$$$, $$$«$$$yEs$$$»$$$ will be recognized as a positive answer).
541 2 1 21 2 1 261 2 3 3 2 11 1 1 1 1 131 1 11 1 161 52 52 3 1 359 4 3 59 3 44100 1 100 12 2 2 2
YES YES NO YES NO
In the first test case, you can swap the second and third elements. Then the array $$$a = [1, 1, 2, 2]$$$, $$$b = [1, 2, 1, 2]$$$, and then $$$c = [2, 3, 3, 4]$$$.
In the second test case, you can leave the elements unchanged. Then $$$c = [2, 3, 4, 4, 3, 2]$$$.
In the third test case, the array $$$a$$$ will not change from rearranging the elements in it. Then $$$c = [2, 2, 2]$$$, so the answer is $$$«$$$NO$$$»$$$.
Name |
---|