样例输入：

3
3 0 6 0 0 2 5 0 0
0 0 0 0 3 8 0 0 0
7 0 8 0 1 6 0 9 0
0 0 7 0 0 3 8 6 0
8 2 0 0 7 0 0 4 5
0 6 3 1 0 0 9 0 0
0 7 0 3 5 0 6 0 2
0 0 0 8 2 0 0 0 0
0 0 2 9 0 0 7 0 4

3 0 6 0 0 2 5 0 3
0 0 0 0 3 8 0 0 0
7 0 8 0 1 6 0 9 0
0 0 7 0 0 3 8 6 0
8 2 0 0 7 0 0 4 5
0 6 3 1 0 0 9 0 0
0 7 0 3 5 0 6 0 2
0 0 0 8 2 0 0 0 0
0 0 2 9 0 0 7 0 4

3 0 6 0 0 2 0 0 0
0 0 0 0 3 8 0 0 0
7 0 8 0 1 6 0 9 0
0 0 7 0 0 3 8 6 0
8 2 0 0 7 0 0 4 5
0 6 3 1 0 0 9 0 0
0 7 0 3 5 0 6 0 2
0 0 0 8 2 0 0 0 0
0 0 2 9 0 0 7 0 4

样例输出：

1
3 1 6 4 9 2 5 7 8 
2 9 5 7 3 8 4 1 6 
7 4 8 5 1 6 2 9 3 
9 5 7 2 4 3 8 6 1 
8 2 1 6 7 9 3 4 5 
4 6 3 1 8 5 9 2 7 
1 7 9 3 5 4 6 8 2 
6 3 4 8 2 7 1 5 9 
5 8 2 9 6 1 7 3 4 
0
2