#YC345. 错误勘探

错误勘探

image

样例1

4
1 0 1 0
0 0 0 0
1 1 1 1
0 1 0 1
OK

样例2

4
1 0 1 0
0 0 1 0
1 1 1 1
0 1 0 1
2 3

样例3

4
1 0 1 0
0 1 1 0
1 1 1 1
0 1 0 1
Corrupt