1     2    20    20
11000000000000000000
01000000000000000000
00101000000000000000
11111100000000000000
00001000000000000000
01001100000000000000
00001011100000000000
10111111110000000000
10111110010000000000
01011011000000000000
00011001100011000000
00111011001000100000
00001100010110010000
11111001111110010000
01110001110111000000
00101000011100110000
00101000001101100100
10001010100010111000
11001011011101001111
11010101110111100001