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。
CF2210A.A Simple Sequence
A Simple Sequence
You are given an integer . You need to construct a permutation using integers from to such that the following condition is satisfied:
$$a_1 \bmod a_2 \ge a_2 \bmod a_3 \geq \ldots \ge a_{n-1} \bmod a_{n},$$where$u$mod$v$denotes the remainder of dividing$u$by$v$.</p><p>If multiple valid permutations exist, you may output any of them.</p><p>It can be shown that a valid permutation always exists for every$n \ge 2$.</p><div class="statement-footnote"><p>$^{\text{∗}}$A permutation of length$n$is an array consisting of$n$distinct integers from$1$to$n$in arbitrary order. For example,$[2,3,1,5,4]$is a permutation, but$[1,2,2]$is not a permutation ($2$appears twice in the array), and$[1,3,4]$is also not a permutation ($n=3$but there is$4$ in the array). ## Input Each test contains multiple test cases. The first line contains the number of test cases $t$ ($1 \le t \le 100$). The description of the test cases follows. The first line of each test case contains a single integer $n$ ($2 \le n \le 100$). ## Output For each test case, output on a single line $n$ space-separated integers $a_1, a_2, \ldots a_n$. If multiple valid permutations exist, you may output any of them. ## Note In the second test case, $2 \bmod 3 \ge 3 \bmod 1$, so the permutation $[2, 3, 1]$ is valid. In the third test case, $2 \bmod 4 \ge 4 \bmod 3 \ge 3 \bmod 1$, so the permutation $[2, 4, 3, 1]$ is valid. ## Samples ```input1 4 2 3 4 5 ``` ```output1 2 1 2 3 1 2 4 3 1 3 5 4 2 1 ```$$在线编程 IDE
建议全屏模式获得最佳体验
键盘快捷键
| 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 |
第 1 行,第 1 列
0 字符
-
最近自测结果
暂未运行
最近递交结果
暂无递交记录