UVA467 Synching Signals

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=6&page=show_problem&problem=408 [PDF](https://uva.onlinejudge.org/external/4/p467.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA467/c32027a12d278ea15cfb12f8fab3cc901c43d132.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA467/568d5f9f04108ce5187295052b2fe9353b0a1819.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA467/79ce80c986d6d3f5209d917f40ae5e8377a23923.png)