10 10
0 0
4255 5857
9259 30283
17250 15721
26724 9584
22720 21026
29689 19632
3914 2800
4241 3360
18824 11971
23980 2
4230 3
1854 2
8079 2
20380 5
23865 8
28828 7
26018 6
6136 2
2552 1