Result

WA

Code [DL]

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

stdin

01101001
11010010
11111101
00001010
10100000
11010000
01000010
00010011
10000000
00000000
00010101
10001101
00010000
01001111
11001101
00101101
10011001
01001110
00000010
10100111
01110010
11011100
01011011
10011111
00000011
01011011
01010011
00010101
00100100
10001000
01100000
10101011
10111110
10011011
01111000
10110111
10101111
11010101
00110111
00001111
11001111
00011100
01000111
00100000
00000110
11110100
00000001
10101000
11100111
01101000

stdout

Compilation failed: 2 error(s), 0 warnings

stderr

/tmp/code.cs(1,77): error CS1525: Unexpected symbol `(', expecting `.'
/tmp/code.cs(1,132): error CS1525: Unexpected symbol `)', expecting `;' or `}'
Cannot open assembly '/tmp/code.exe': No such file or directory.
rm: cannot remove '/tmp/code.exe': No such file or directory

strace