4 5
190 60
  0  0     1   5     
  0  1     2  -1     
  0  2     3  -1     
  0  3     7  -1     
           
  1  0     0   9     
  1  1     4  -1     
  1  2     3  -1     
  1  3     6  11     
           
  2  0     4  13     
  2  1     8  -1     
  2  2     7  -1     
  2  3     10 15     
           
  3  0     8  17     
  3  1     12 -1     
  3  2     11 -1     
  3  3     14 19     
           
  4  0     12 -1     
  4  1     16 -1     
  4  2     15 17     
  4  3     18 -1