UVA10450 World Cup Noise

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=16&page=show_problem&problem=1391 [PDF](https://uva.onlinejudge.org/external/104/p10450.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10450/92e0912d14d9fa0cb1ad0350ef42b51ce7675af9.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10450/92b75fa2e4084ea2524d77fa3de43275c1be2e1a.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10450/3704a805b23cbec4ab51de12f5166f81e2290378.png)