UVA11870 Antonyms

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=226&page=show_problem&problem=2981 [PDF](https://uva.onlinejudge.org/external/118/p11870.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11870/b230228ed60d4816cb4b69b5af7c69504fa9c188.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11870/c8c74cf1890416a93acd14ccd4a57596a24d85c1.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11870/0b2438996ec90ebda0a2b73e73c0f5ac8661f6d0.png)