21
19
0000001111111000000
0000111111111110000
0001111000001111000
0011100000000011100
0111000000000001110
0110000000000000110
0110000000000000110
1100000000000000011
1100000000000000011
1100000000000000011
1100000000000000011
1100000000000000011
1100000000000000011
0110000000000000111
0110000000000000110
0111000000111001110
0011100000111111100
0001111000001111100
0000111111111111110
0000000111111000111
0000000000000000011
