19 18
0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
1 12
1 19
1 6
1 17
1 14
1 9
1 10
1 13
1 3
1 16
1 5
1 18
1 7
1 1
1 4
1 8
1 11
1 2
1 15
