UVA211 多米诺效应 The Domino Effect

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=4&page=show_problem&problem=147 [PDF](https://uva.onlinejudge.org/external/2/p211.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA211/f086993d64b5b44145a229fd9015e88923d505c3.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA211/a3b35787b40dd2b480326157d2363f7031b6a004.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA211/44b1cbd71bba225df39aeda5858656b1e8f772d8.png)