CF1776A.Walking Boy

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

Walking Boy

One of the SWERC judges has a dog named Boy. Besides being a good competitive programmer, Boy loves fresh air, so she wants to be walked at least twice a day. Walking Boy requires 120120 consecutive minutes. Two walks cannot overlap, but one can start as soon as the previous one has finished.

Boy before and after getting ACCEPTED on this problem.

Today, the judge sent nn messages to the SWERC Discord server. The ii-th message was sent aia_i minutes after midnight. You know that, when walking Boy, the judge does not send any messages, but he can send a message right before or right after a walk. Is it possible that the judge walked Boy at least twice today?

Note that a day has 14401440 minutes, and a walk is considered to happen today if it starts at a minute s0s \ge 0 and ends right before a minute e1440e \le 1440. In that case, it must hold that es=120e - s = 120 and, for every i=1,2,ni = 1, \, 2 \, \dots, \, n, either aisa_i \le s or aiea_i \ge e.

Input

Each test contains multiple test cases. The first line contains an integer tt (1t1001 \le t \le 100) — the number of test cases. The descriptions of the tt test cases follow.

The first line of each test case contains an integer nn (1n1001 \le n \le 100) — the number of messages sent by the judge.

The second line of each test case contains nn integers a1,a2,,ana_1, \, a_2, \, \dots, \, a_n ($0 \le a_1 \lt a_2 \lt \cdots \lt a_n \lt 1440$) — the times at which the messages have been sent (in minutes elapsed from midnight).

Output

For each test case, output one line containing YES if it is possible that Boy has been walked at least twice, and NO otherwise.

Note

In the first test case, the judge has sent a message at each time multiple of 100100 (excluding 00). It is impossible that he has walked Boy even once.

In the second test case, the times are the same as above, but 500500 and 10001000 are missing. The judge could have walked Boy, for instance, during the time intervals [440,560][440, 560] and [980,1100][980, 1100]. The situation is illustrated in the picture below, where the walks are represented by green intervals.

$$$$</p><p>In the <span class="tex-font-style-bf">third test case</span>, the times are the same as in the first test case, but$1000$is missing. The judge could have walked Boy at most once.</p><p>In the <span class="tex-font-style-bf">fourth test case</span>, Boy could have been walked during the time intervals$[739, 859]$and$[859, 979]$. ![](./3290/file/img_c1743e42ebff.png) ## Samples ```input1 6 14 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 12 100 200 300 400 600 700 800 900 1100 1200 1300 1400 13 100 200 300 400 500 600 700 800 900 1100 1200 1300 1400 13 101 189 272 356 463 563 659 739 979 1071 1170 1274 1358 1 42 5 0 1 2 3 4 ``` ```output1 NO YES NO YES YES YES ```$$

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