欢迎来到起遇信息学
起遇信息学正处于上线筹建阶段,以下功能已全部开放免费体验: ✅ 完整题库浏览与代码提交评测(C / C++ / Python / Java 等) ✅ 入门到进阶的系列课程试读、作业与考试 ✅ AI 提示、AI 作业分析等智能助教功能 ✅ 赛事模拟与个人能力报告 ✅ 邮箱注册开放 ⏳ 付费课程订阅与微信/支付宝支付通道 ⏳ 手机号登录,微信扫码登录、微信公众号绑定 使用中如遇任何问题,欢迎通过页面底部 **"联系我们"** 与我们沟通。
CF2084B.MIN = GCD
MIN = GCD
You are given a positive integer sequence of length . Determine if it is possible to rearrange such that there exists an integer () satisfying $$ \min([a_1,a_2,\ldots,a_i])=\gcd([a_{i+1},a_{i+2},\ldots,a_n]).$$
Heredenotes the greatest common divisor of, which is the maximum positive integer that divides all integers in.
Input
Each test contains multiple test cases. The first line contains the number of test cases (). The description of the test cases follows.
The first line of each test case contains a single integer ().
The second line contains integers ().
It is guaranteed that the sum of over all test cases does not exceed .
Output
For each test case, output "Yes" if it is possible, and "No" otherwise.
You can output the answer in any case (upper or lower). For example, the strings "yEs", "yes", "Yes", and "YES" will be recognized as positive responses.
Note
In the first test case, rearrange to and let , then .
In the second test case, it can be shown that it is impossible.
In the third test case, rearrange to and let , then .
In the fifth test case, rearrange to and let , then .
Samples
7
2
1 1
2
1 2
3
2 2 3
3
2 3 4
5
4 5 6 9 3
3
998244359987710471 99824435698771045 1000000007
6
1 1 4 5 1 4
Yes
No
Yes
No
Yes
Yes
Yes
在线编程 IDE
建议全屏模式获得最佳体验
| 进入全屏编程 | Alt+E |
| 递交评测 | Ctrl+Enter |
| 注释/取消注释 | Ctrl+/ |
| 缩放字体 | Ctrl+滚轮 |