7
0 0 0
0 1 0
1 1 0
1 1 1
2 1 1
1 2 1
1 2 2
13
0 1 1
0 2 2
0 3 3
0 4 4
0 5 5
0 6 6
0 7 7
1 2 2 1
0 2 2
1 3 3 1
0 3 3
0 2 3
0 2 4