UVA336 A Node Too Far

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=5&page=show_problem&problem=272 [PDF](https://uva.onlinejudge.org/external/3/p336.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA336/c03bf6f287f2c854a7c3a55b3a0b04c702f0fef6.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA336/fe3a7fa3ec12e156f7524c4fbe8b71f128963eac.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA336/99be4745b4806ae1df582dd424f47b2375e3e92b.png)