Phone List

题意翻译

给定$n$个长度不超过$10$的数字串，判断是否有两个字符串$A$和$B$,满足$A$是$B$的前缀，若有，输出```NO```，若没有，输出```YES```。 Translated by @wasa855

题目描述

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=25&page=show_problem&problem=2347 [PDF](https://uva.onlinejudge.org/external/113/p11362.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11362/86a9ad22547794c86c707c6301a3959ca76cfd43.png)

输入输出格式

输入格式


![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11362/d5bf45fcc4bdcc7e676e655a36dda7a794b189af.png)

输出格式


![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11362/da40d07a03794e91297b87d8a38934cf0ee2e2e4.png)

输入输出样例

输入样例 #1

2
3
911
97625999
91125426
5
113
12340
123440
12345
98346

输出样例 #1

NO
YES