by@moratorium08
ERROR
<?php while(1){$j=sqrt(8*bindec(fgets(STDIN))+1);echo 1^$j<=>floor($j);}?>00100100 11111010 00010111 00000000 01100000 00010101 11100111 11010010 10011001 01011001 11110110 00101101 10001000 01010010 10010101 01001110 10011010 01011011 10111101 10011001 00000011 00010101 00110111 10111110 10101110 11111101 00001111 10100110 01111110 00001010 10001011 00000110 00101111 00011100 01001101 11111111 01111011 01111100 00000001 10101011 01000010 01101001 11001100 00110010 10001001 01111000 10110011 01000100 11101101 00110100