UVA10893 Creating Sudoku Puzzles

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=20&page=show_problem&problem=1834 [PDF](https://uva.onlinejudge.org/external/108/p10893.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10893/175ab956dd5177472e15fcdce3e25d1421827db7.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10893/89d5f50f6640307488e878a3928fc4a92285b928.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10893/30aa3c72ec5215d1c0deac40888e8937367de3ba.png)