Run id: 111886

------Input------

5

------Answer-----

   1   2   3   4   5
  16  17  18  19   6
  15  24  25  20   7
  14  23  22  21   8
  13  12  11  10   9

------Your output-----

  1 10 11 20 21
  2  9 12 19 22
  3  8 13 18 23
  4  7 14 17 24
  5  6 15 16 25