# example 13
#  i  j  k  n  m  p cons
6 8
1  1  0  0  0  0  0  0
1 -1  0  0  1  0  0  0
1  0  1  0  0  0  0  0
1  2 -2  0  0  1  0  0
1  0  0  1  0  0  0  0
1  1  0 -1 -1  0  1  0
3 5
1           1  0  0  -1
1           0  1  0  -1
1           0  0  1  -1
