10
1 1 3 3
0 2 2 0

0 2 2 2
0 2 2 0

0 2 2 0
0 2 2 0

0 2 1 1
0 3 3 0

-1 -1 1 1
0 0 2 -2

1 1 3 3
2 1 3 -2

2 2 8 8
0 2 2 0

2 1 2 3
0 2 2 0

1 1 2 2
0 0 2 2

-1 -2 -3 -2
-99 -99 -3 -3