UVA11696 Beacons

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=78&page=show_problem&problem=2743 [PDF](https://uva.onlinejudge.org/external/116/p11696.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11696/380f13823201029f8c366907aaab56316a395885.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11696/edac23eff0586e9bb5b34916751b326beaa73f23.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11696/7adafba9613f3d2451061792f8edd04eabf77e01.png)