UVA10649 Danger Point

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=18&page=show_problem&problem=1590 [PDF](https://uva.onlinejudge.org/external/106/p10649.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10649/5fbc732859ff089f9e5bba04d3d57d8db0c1a143.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10649/60f3fee2c0b8923c0a2077a5702e7ccbba442985.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10649/e9f6a0963cf5827569920eb25bd8cc3da8e5d021.png)