16 3
0 0 1 3
0 0 1 4
0 0 4 3
0 0 4 5
0 1 6 2
0 1 6 5
0 1 7 1
0 1 8 5
0 1 10 5
0 2 7 2
0 2 8 1
0 2 8 2
0 2 8 5
0 2 9 2
0 2 9 3
0 2 10 1
0 3 6 4
0 3 7 3
0 3 9 4
0 3 9 5
0 3 10 1
0 3 10 3
0 3 10 4
0 4 7 2
0 4 7 4
0 4 8 4
0 4 9 1
0 4 9 2
0 5 6 3
0 5 7 1
0 5 7 4
0 5 8 1
0 5 8 2
0 5 8 3
6 6 6 8
6 6 8 9
6 7 7 10
6 7 9 8
6 7 9 9
6 7 10 7
6 8 10 7
6 8 10 9
6 9 9 9
6 9 10 9
6 10 10 7
7 7 8 8
7 8 10 10
8 8 10 10