Result

WA

Code [DL]

while 1:id=1^((1+8*int(input(id),2))**.5%1>0)

stdin

10111000
00010101
10100011
00000000
11100001
11100101
10001011
01001110
11000001
10000101
11010010
00110111
00000001
00100111
11010011
11001101
00001111
00010101
11111101
01010111
10111110
00011101
01111000
00110101
10100111
00000011
01101001
01011011
00100110
10011001
11000111
01100010
10101011
00011100
00001010
01001001
11001000
10001000
00101101
00100100
11100111
01010010
01000010
00110111
00000110
10111011
00101000
01011100
00100101
10010110

stdout

<built-in function id>01010001001110001110101001110100111001111011100000

stderr

Traceback (most recent call last):
  File "/volume/CODE", line 1, in <module>
    while 1:id=1^((1+8*int(input(id),2))**.5%1>0)
EOFError: EOF when reading a line

strace