9
160 480
40 360
160 240
280 240
280 480
400 240
400 480
160 360
280 360
0 1 0 0 0 0 0 1 0
1 0 1 0 0 0 0 0 0
0 1 0 0 0 0 0 1 0
0 0 0 0 0 1 0 1 2
0 0 0 0 0 0 1 1 2
0 0 0 1 0 0 0 0 2
0 0 0 0 1 1 0 0 2
1 2 1 1 1 0 0 0 1
0 0 0 2 2 2 2 0 0
7
