P10960 SUBSTRACT

Description

![](https://cdn.luogu.com.cn/upload/image_hosting/7iy6ncb0.png)![](https://cdn.luogu.com.cn/upload/image_hosting/4g4yijww.png)

Input Format

![](https://cdn.luogu.com.cn/upload/image_hosting/kgtenidc.png)

Output Format

![](https://cdn.luogu.com.cn/upload/image_hosting/5gdc86t2.png)

Explanation/Hint

Special Judge by @[w9095](luogu://user/569235)