9 20
505954 177790 473588 89346 934589 865485 547639 300246 908871
6 3
6 4
3 4
5 6
5 3
7 2
1 3
8 4
1 6
8 3
5 7
0 8
3 0
0 2
2 6
4 0
6 8
2 3
2 8
1 7
