UVA10461 Difference

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=16&page=show_problem&problem=1402 [PDF](https://uva.onlinejudge.org/external/104/p10461.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10461/6a73092aaa0ce862e08986c0ef0387217d001d2f.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10461/527fc1135983ad757060890f36abb75077622a35.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10461/52ffa46cb6e0c89ddf7c585a4f9a5c203d1b3455.png)