Virtual contest is a way to take part in past contest, as close as possible to participation on time. It is supported only ICPC mode for virtual contests.
If you've seen these problems, a virtual contest is not for you - solve these problems in the archive.
If you just want to solve some problem from a contest, a virtual contest is not for you - solve this problem in the archive.
Never use someone else's code, read the tutorials or communicate with other person during a virtual contest.

No tag edit access

The problem statement has recently been changed. View the changes.

×
B. Valerii Against Everyone

time limit per test

1 secondmemory limit per test

256 megabytesinput

standard inputoutput

standard outputYou're given an array $$$b$$$ of length $$$n$$$. Let's define another array $$$a$$$, also of length $$$n$$$, for which $$$a_i = 2^{b_i}$$$ ($$$1 \leq i \leq n$$$).

Valerii says that every two non-intersecting subarrays of $$$a$$$ have different sums of elements. You want to determine if he is wrong. More formally, you need to determine if there exist four integers $$$l_1,r_1,l_2,r_2$$$ that satisfy the following conditions:

- $$$1 \leq l_1 \leq r_1 \lt l_2 \leq r_2 \leq n$$$;
- $$$a_{l_1}+a_{l_1+1}+\ldots+a_{r_1-1}+a_{r_1} = a_{l_2}+a_{l_2+1}+\ldots+a_{r_2-1}+a_{r_2}$$$.

If such four integers exist, you will prove Valerii wrong. Do they exist?

An array $$$c$$$ is a subarray of an array $$$d$$$ if $$$c$$$ can be obtained from $$$d$$$ by deletion of several (possibly, zero or all) elements from the beginning and several (possibly, zero or all) elements from the end.

Input

Each test contains multiple test cases. The first line contains the number of test cases $$$t$$$ ($$$1 \le t \le 100$$$). Description of the test cases follows.

The first line of every test case contains a single integer $$$n$$$ ($$$2 \le n \le 1000$$$).

The second line of every test case contains $$$n$$$ integers $$$b_1,b_2,\ldots,b_n$$$ ($$$0 \le b_i \le 10^9$$$).

Output

For every test case, if there exist two non-intersecting subarrays in $$$a$$$ that have the same sum, output YES on a separate line. Otherwise, output NO on a separate line.

Also, note that each letter can be in any case.

Example

Input

2 6 4 3 0 1 2 0 2 2 5

Output

YES NO

Note

In the first case, $$$a = [16,8,1,2,4,1]$$$. Choosing $$$l_1 = 1$$$, $$$r_1 = 1$$$, $$$l_2 = 2$$$ and $$$r_2 = 6$$$ works because $$$16 = (8+1+2+4+1)$$$.

In the second case, you can verify that there is no way to select to such subarrays.

Codeforces (c) Copyright 2010-2021 Mike Mirzayanov

The only programming contests Web 2.0 platform

Server time: Feb/28/2021 18:22:54 (h1).

Desktop version, switch to mobile version.

Supported by

User lists

Name |
---|