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。
CF1807D.Odd Queries
Odd Queries
You have an array . Answer queries of the following form:
- If we change all elements in the range of the array to , will the sum of the entire array be odd?
Note that queries are independent and do not affect future queries.
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 consists of integers and (; ) — the length of the array and the number of queries.
The second line of each test case consists of integers () — the array .
The next lines of each test case consists of integers (; ) — the queries.
It is guaranteed that the sum of over all test cases doesn't exceed , and the sum of doesn't exceed .
Output
For each query, output "YES" if the sum of the entire array becomes odd, 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
For the first test case:
- If the elements in the range would get set to the array would become , the sum would be which is odd, so the answer is "
YES". - If the elements in the range would get set to the array would become , the sum would be which is odd, so the answer is "
YES". - If the elements in the range would get set to the array would become , the sum would be which is odd, so the answer is "
YES". - If the elements in the range would get set to the array would become , the sum would be which is even, so the answer is "
NO". - If the elements in the range would get set to the array would become , the sum would be which is odd, so the answer is "
YES".
Samples
2
5 5
2 2 1 3 2
2 3 3
2 3 4
1 5 5
1 4 9
2 4 3
10 5
1 1 1 1 1 1 1 1 1 1
3 8 13
2 5 10
3 8 10
1 10 2
1 9 100
YES
YES
YES
NO
YES
NO
NO
NO
NO
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 |