by@hakatashi
WA
<?php for(;$c=fgets(STDIN);)$j=sqrt(8*bindec($c)+1),echo 1^$j<=>floor($j);
10111110 11010001 00100100 11100011 00000110 00000000 00111010 01000001 10001100 01000011 00110111 01011011 10100010 11101001 11100111 01001110 00101101 01101000 01010110 11100111 00000011 10111111 01000010 10101011 00101000 00110111 01000110 01110100 01111000 00011100 00111011 01111100 11001101 01011100 11010010 10100011 10001000 10110010 11111101 00001010 00000001 00001111 11100100 10011111 01101001 10010101 00010101 01011111 00101100 10011001
PHP Parse error: syntax error, unexpected ',' in /volume/CODE on line 1