A13187 | Perfect Keyboard
时间限制1s
内存限制256MB
通过 / 提交0/0
题目描述
Polycarp wants to assemble his own keyboard. Layouts with multiple rows are too complicated for him — his keyboard will consist of only one row, where all $26$ lowercase Latin letters will be arranged in some order.
Polycarp uses the same password $s$ on all websites where he is registered (it is bad, but he doesn't care). He wants to assemble a keyboard that will allow to type this password very easily. He doesn't like to move his fingers while typing the password, so, for each pair of adjacent characters in $s$ , they should be adjacent on the keyboard. For example, if the password is abacaba, then the layout cabdefghi... is perfect, since characters a and c are adjacent on the keyboard, and a and b are adjacent on the keyboard. It is guaranteed that there are no two adjacent equal characters in $s$ , so, for example, the password cannot be password (two characters s are adjacent).
Can you help Polycarp with choosing the perfect layout of the keyboard, if it is possible?
Polycarp uses the same password $s$ on all websites where he is registered (it is bad, but he doesn't care). He wants to assemble a keyboard that will allow to type this password very easily. He doesn't like to move his fingers while typing the password, so, for each pair of adjacent characters in $s$ , they should be adjacent on the keyboard. For example, if the password is abacaba, then the layout cabdefghi... is perfect, since characters a and c are adjacent on the keyboard, and a and b are adjacent on the keyboard. It is guaranteed that there are no two adjacent equal characters in $s$ , so, for example, the password cannot be password (two characters s are adjacent).
Can you help Polycarp with choosing the perfect layout of the keyboard, if it is possible?
输入格式
The first line contains one integer $T$ ( $1 \le T \le 1000$ ) — the number of test cases.
Then $T$ lines follow, each containing one string $s$ ( $1 \le |s| \le 200$ ) representing the test case. $s$ consists of lowercase Latin letters only. There are no two adjacent equal characters in $s$ .
Then $T$ lines follow, each containing one string $s$ ( $1 \le |s| \le 200$ ) representing the test case. $s$ consists of lowercase Latin letters only. There are no two adjacent equal characters in $s$ .
输出格式
For each test case, do the following:
- if it is impossible to assemble a perfect keyboard, print NO (in upper case, it matters in this problem);
- otherwise, print YES (in upper case), and then a string consisting of $26$ lowercase Latin letters — the perfect layout. Each Latin letter should appear in this string exactly once. If there are multiple answers, print any of them.
- if it is impossible to assemble a perfect keyboard, print NO (in upper case, it matters in this problem);
- otherwise, print YES (in upper case), and then a string consisting of $26$ lowercase Latin letters — the perfect layout. Each Latin letter should appear in this string exactly once. If there are multiple answers, print any of them.
输入输出样例
输入 #1
5 ababa codedoca abcda zxzytyz abcdefghijklmnopqrstuvwxyza
输出 #1
YES bacdefghijklmnopqrstuvwxyz YES edocabfghijklmnpqrstuvwxyz NO YES xzytabcdefghijklmnopqrsuvw NO
暂无题解
C++ 编辑器
输入
输出
可保存默认模板;新题优先使用已保存模板。
当前快捷键仅展示,暂不支持修改。
- 撤销
Ctrl / ⌘ + Z - 重做
Ctrl / ⌘ + Y - 查找
Ctrl / ⌘ + F - 全选
Ctrl / ⌘ + A - 复制
Ctrl / ⌘ + C - 剪切
Ctrl / ⌘ + X - 粘贴
Ctrl / ⌘ + V - 自动排版
工具栏排版按钮 - 草稿保存
编辑时自动保存到本机
历史
提交记录
状态说明时间源码
AI
作答助手
你好,我是作答助手。可以问思路、复杂度、样例含义或代码报错原因;不会直接给出完整 AC 代码。
确定要清空代码吗?
提交通过
评测结果:Accepted