9 8
   0    2    0    0    0    1    0  -19 
   0    0    1    0    0  -12   -1 1760 
   0    0    0    7    0   11   -7 10314 
   0    0    0    0    7   -1    0    8 
   1    0    0    0    0   12    1 -1760 
   1    0    0    0    0  -11    7 -10314 
   1    0    0    0    0    1    0   -8 
   1    0    0    0    0   -1    0   19 
   1    0    0    0    0    0    0    1 

0 4