80 100
60 90 60 90 60 90 60 90 60 90 60 90 60 90 60 90 60 90 60 90 60 90 60 90 60 90 60 90 60 90 60 90 60 90 60 90 60 90 60 90 60 90 60 90 60 90 60 90 60 90 60 90 60 90 60 90 60 90 60 90 60 90 60 90 60 90 60 90 60 90 60 90 60 90 60 90 60 90 60 90 
0 0
  1000      0
   707    707
     0   1000
  -707    707
 -1000      0
  -707   -707
    -0  -1000
   707   -707
  2000      0
   1414   1414
      0   2000
  -1414   1414
  -2000      0
  -1414  -1414
     -0  -2000
   1414  -1414
   3000      0
   2121   2121
      0   3000
  -2121   2121
  -3000      0
  -2122  -2121
     -0  -3000
   2121  -2122
   4000      0
   2828   2828
      0   4000
  -2828   2829
  -4000      0
  -2829  -2828
     -1  -4000
   2828  -2829
   5000      0
   3536   3535
      0   5000
  -3535   3536
  -5000      0
  -3536  -3535
     -1  -5000
   3535  -3536
   6000      0
   4243   4243
      0   6000
  -4242   4243
  -6000      1
  -4243  -4242
     -1  -6000
   4242  -4243
   7000      0
   4950   4950
      0   7000
  -4949   4950
  -7000      1
  -4950  -4949
     -1  -7000
   4949  -4951
   8000      0
   5657   5657
      0   8000
  -5656   5657
  -8000      1
  -5658  -5656
     -1  -8000
   5656  -5658
   9000      0
   6364   6364
      0   9000
  -6364   6364
  -9000      1
  -6365  -6363
     -1  -9000
   6363  -6365
  10000      0
   7071   7071
      0  10000
  -7071   7072
 -10000      1
  -7072  -7070
     -1 -10000
   7070  -7072
