14 3
0 0 1 1
0 0 2 2
0 0 3 3
0 0 4 2
0 1 5 1
0 1 5 3
0 1 6 3
0 1 7 2
0 1 8 2
0 1 8 4
0 1 9 2
0 2 5 3
0 2 6 3
0 2 7 4
0 2 8 1
0 2 8 2
0 2 9 1
0 2 9 4
0 3 5 4
0 3 6 1
0 3 6 2
0 3 6 4
0 3 7 4
0 3 9 3
0 4 5 1
0 4 7 1
0 4 7 3
0 4 8 4
0 4 9 1
0 4 9 2
5 5 5 6
5 5 5 8
5 5 6 8
5 6 6 7
5 8 9 7
5 9 6 9
6 6 8 7
6 6 9 7
6 9 7 7
6 9 8 8
7 7 8 8
7 8 9 9