csharp, 136 bytes

Result

WA

Code [DL]

using System;using Console;class E{static void Main(){for(int i=51;--i>0;)Write(Math.Sqrt(8*Convert.ToByte(ReadLine(),2)+1)%2==1?1:0);}}

stdin

01111000
10100101
11010010
00001010
00000110
01001110
01010001
01101111
01000010
00101111
00001011
00101101
01101001
10001111
11011010
01011001
01011011
01011101
01101000
00001111
00101011
11111101
11100111
00010001
01011010
00000011
10011001
01110000
11111000
11101011
11010100
10011110
01001100
00100100
00010101
10101011
00110111
00011000
10111110
00100100
11111101
10001000
01111101
00011100
10111111
11000111
00000000
10001011
10011101
00000001

stdout

Compilation failed: 1 error(s), 0 warnings

stderr

/tmp/code.cs(1,20): error CS0246: The type or namespace name `Console' could not be found. Are you missing `System' using directive?
Cannot open assembly '/tmp/code.exe': No such file or directory.
rm: cannot remove '/tmp/code.exe': No such file or directory

strace