19
1 0 0 0 0 1 0 0 0 0 1 0 0 1 0 0 0 0 0
20
7 4
9 4
10 9
6 3
7 6
5 9
9 7
7 15
4 5
15 12
9 2
5 12
2 5
15 2
1 12
13 1
2 7
11 8
10 5
14 1