UVA10685 Nature

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=18&page=show_problem&problem=1626 [PDF](https://uva.onlinejudge.org/external/106/p10685.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10685/9513378af0403cf2a556efc44d3cd776d1a56d13.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10685/5ed299b358e25c20a6710f8d55ccac5a066fdfb4.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10685/f4ad6ba3c98c137dfdfa1974f3c96be16b91c9e9.png)