goruby, 86 bytes

Result

WA

Code [DL]

a=255.times{|i|i.times.inject(&:+)}
puts 255.gets.split.map{|x|a.index(x.to_i(2))?1:0}

stdin

01011011
00111110
00000011
00110111
00110001
11001011
00001111
01111000
01110100
10001000
01101001
10111110
00000000
11100100
00100100
01001110
00110111
01101110
11100111
00101101
11111101
11010010
10110011
10111100
11011101
10101011
10001001
01000010
00011100
00011011
11110000
01110001
00001010
01000010
00100111
11101110
01101101
10100001
00000110
10010011
10011001
00010101
00000001
10101111
11010110
10110110
11011010
00101001
00001000
01000000

stdout

stderr

<internal:golf_prelude>:14:in `singleton_class': can't define singleton (TypeError)
	from <internal:golf_prelude>:14:in `method_missing'
	from /volume/CODE:2:in `<main>'

strace