19
18
000001111111000000
000111111111110000
001111111111111000
011111000001111100
011110000000111100
111100000000011110
111000000000001110
111000000000001110
111000000000001110
111000000000001110
111000000000001110
111000000000001110
011100000100011100
011110001111111100
011111000011111000
001111111111111100
000111111111111111
000001111111011110
000000000000000110
