10 15 20
0 9 1
0 8 0
0 5 0
1 7 1
1 9 0
0 5 0
1 13 1
0 5 1
0 2 0
1 5 0
1 9 0
1 4 1
1 7 0
0 1 0
1 2 0
0 1 0
1 6 1
1 11 1
1 15 1
0 1 0