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