text: 2 8
  0 0 0 0 4 1
  0 0 0 0 6 1
  0 0 0 0 7 1
  0 0 0 1 1 3
  0 0 0 1 2 3
  0 0 0 1 3 3
  0 0 0 3 1 6
  0 0 0 3 2 6
  0 0 0 6 0 2
  0 0 0 7 0 2
  0 0 1 0 0 7
  0 0 2 1 0 1
  0 0 2 2 3 6
  0 0 2 7 0 0
  0 0 3 1 0 1
  0 0 3 1 1 1
  0 0 3 2 1 1
  0 0 6 1 1 1
  0 0 6 3 1 2
  0 1 0 0 2 2
  0 1 0 0 5 4
  0 1 1 2 1 2
  0 1 4 0 5 2
  0 2 0 0 2 2
  0 2 0 0 4 2
  0 2 2 2 0 1
  0 3 0 0 2 2
  0 3 0 0 4 2
  0 3 0 0 5 4
  0 3 1 0 2 2
  0 3 1 2 1 2
  0 3 1 2 2 2
  0 3 4 0 0 1
  0 3 4 0 5 2
  0 6 1 2 1 2
  0 6 3 2 2 2
  0 7 0 0 0 5
  1 0 0 1 0 1
  1 0 0 2 0 1
  1 0 2 2 0 1
  1 0 3 5 0 1
  1 0 7 6 0 1
  1 1 1 3 0 4
  1 1 1 4 0 4
  1 1 4 2 0 3
  1 1 4 3 0 3
  1 1 4 3 1 3
  1 2 7 5 2 3
  1 7 6 7 0 3
  2 0 0 1 0 1
  2 0 0 2 0 1
  2 0 3 1 1 1
  2 1 0 0 4 6
  2 3 2 0 0 3
  2 3 2 0 3 3
  3 0 0 1 0 1
  3 0 0 2 0 1
  3 0 0 3 1 1
  3 0 1 0 0 7
  3 0 2 2 0 1
  3 0 6 2 1 1
  3 0 7 5 2 1
  3 1 0 2 0 6
  3 1 1 1 0 4
  3 1 1 3 0 4
  3 1 1 4 0 4
  3 1 4 1 0 3
  3 1 4 3 0 3
  3 1 4 3 1 3
  3 1 4 4 0 3
  3 1 7 6 0 3
  3 2 2 2 0 4
  3 3 0 0 4 3
  3 3 0 1 1 3
  3 3 1 0 0 3
  3 3 1 0 3 3
  3 3 4 0 0 7
  3 3 4 3 0 3
  3 3 6 0 1 0
  3 3 7 5 2 3
  3 4 1 3 0 4
  3 4 4 2 0 3
  3 7 6 7 0 0
  4 1 5 0 2 0
  4 3 5 0 2 3
  5 0 2 0 0 7
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  7 0 0 0 0 2
  7 0 2 0 0 0
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