7
160 260
400 260
160 500
400 500
80 180
320 180
80 420
0 1 1 1 1 0 0
1 0 1 1 0 1 0
1 1 0 1 0 0 1
1 1 1 0 0 0 0
1 0 0 0 0 1 1
0 1 0 0 1 0 0
0 0 1 0 1 0 0
4
