by@moratorium08
WA
for(;;)print(+!(Math.sqrt(8*parseInt(readLine(),2)+1)%1))
11000100 11010011 10111010 01111010 00011110 01101010 01101001 01001110 01110110 11111100 01000010 00001010 10100011 10111110 10101110 00010101 11000110 10001000 00001111 00000111 00011100 01011011 00101101 00010001 11100000 11100111 00000000 00011011 01011000 01111000 00000001 00000001 10101011 01101101 10000110 01001110 10110111 00011111 00100100 01010001 00100111 00000110 00000011 00110111 10011000 11111101 00001110 10011001 00110011 11010010
js: uncaught JavaScript runtime exception: ReferenceError: "readLine" is not defined.