UVA11408 Count DePrimes

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=26&page=show_problem&problem=2403 [PDF](https://uva.onlinejudge.org/external/114/p11408.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11408/38d087c336f89c907c638ba7c5b9d0b02ccf6181.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11408/292ef348ca41869b1887ae37b9f944d84510a3be.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11408/1bda4123925427ad4f00a008c5622306c2199e67.png)