by@kurgm
WA
while 1:id=+((1+8*int(input(id),2))**.5%1==0)
00001110 01001101 10100100 00001010 10011001 01101001 11100111 10101101 00000001 10011001 01000000 10111110 11111101 00001111 10111010 00011110 00000000 00110111 10100111 10101011 00101011 11101001 01000010 01011101 00101101 11010010 10011010 01111000 00010101 01111110 00100101 11001110 01001010 00100100 01001110 01110111 00110001 10010010 10001000 11010000 00000110 00010001 11101110 11001100 10101001 00000011 01000010 01100100 00011100 01011011
<built-in function id>00011110110111001101001011011000011000101000011011
Traceback (most recent call last):
File "/volume/CODE", line 1, in <module>
while 1:id=+((1+8*int(input(id),2))**.5%1==0)
EOFError: EOF when reading a line