3
10
9
       1 -3 3 -1 0 0 0 0 0 0
       0 1 -3 3 -1 0 0 0 0 0
       0 0 1 -3 3 -1 0 0 0 0
       0 0 0 1 -3 3 -1 0 0 0
       0 0 0 0 1 -3 3 -1 0 0
       0 0 0 0 0 1 -3 3 -1 0
       0 0 0 0 0 0 1 -3 3 -1
       -1 0 0 0 0 0 0 1 -3 3
       3 -1 0 0 0 0 0 0 1 -3
1