UVA11839 Optical Reader

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=226&page=show_problem&problem=2939 [PDF](https://uva.onlinejudge.org/external/118/p11839.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11839/b02509e575548bc03b65a04dd4d3cee77c15c809.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11839/d928e58abad13563b059c518a000086db471ad07.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11839/42fdeea35a5921b4c70723a2f209b1610e64c339.png)