20 20
10011111011111011111
11100101100101100101
10110110110110110110
11011011011011011011
01101101101101101101
10110110110110110111
10011011011011011001
11101101101101101101
10110110110110110110
11011011011011011011
01101101101101101101
10110110110110110111
10011011011011011001
11101101101101101101
10110110110110110110
11011011011011011011
01101101101101101101
10110110110110110111
11010011010011010001
01111101111101111101