20
0/1 0/1 1/1 0/1
2/1 0/1 1/1 -1/1
4/1 0/1 1/1 -4/1
6/1 0/1 1/1 -9/1
8/1 0/1 1/1 -16/1
10/1 0/1 1/1 -25/1
12/1 0/1 1/1 -36/1
14/1 0/1 1/1 -49/1
16/1 0/1 1/1 -64/1
18/1 0/1 1/1 -81/1
20/1 0/1 1/1 -100/1
22/1 0/1 1/1 -121/1
24/1 0/1 1/1 -144/1
26/1 0/1 1/1 -169/1
28/1 0/1 1/1 -196/1
30/1 0/1 1/1 -225/1
32/1 0/1 1/1 -256/1
34/1 0/1 1/1 -289/1
36/1 0/1 1/1 -324/1
38/1 0/1 1/1 -361/1