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我再贡献一组数据

Posted by 0_9 at 2019-08-22 08:51:50 on Problem 3740 and last updated at 2019-08-22 08:53:27
In Reply To:再贡献一组数据 Posted by:18357 at 2014-10-29 14:23:53
Input

3 3
1 0 1
1 1 0
0 1 1

Output

It is impossible

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