UVA10841 Lift Hopping in the Real World

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=20&page=show_problem&problem=1782 [PDF](https://uva.onlinejudge.org/external/108/p10841.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10841/ef051e5679267139fa0daf5f136747d27d478e37.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10841/6cc649b7e36b8d8bee5227b7eb3d0813f994d547.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10841/50b0e071239a77044a917439fc84daa48735b5f4.png)