UVA10002 Center of Masses

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=12&page=show_problem&problem=943 [PDF](https://uva.onlinejudge.org/external/100/p10002.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10002/a236fb24d4a61c65f30cb28f58514c58d7d92943.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10002/4ba8d6e1b63356f7aabf70446857bc9ff44018eb.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10002/9bfc906063e41b933f08e143ad2e55a40e01ec50.png)