6
4 1 7 1 8 1 9 1 10 
4 1 11 1 12 1 13 1 14 
4 -1 2 1 3 -1 4 1 5 
4 1 1 1 2 1 4 1 6 
14 1 2 1 4 1 8 1 9 1 11 1 12 1 14 1 15 1 16 1 17 1 18 1 19 1 20 1 22 
12 -1 2 -1 4 -1 8 -1 9 -1 11 -1 12 -1 14 -1 15 -1 16 -1 17 -1 18 1 21 
0