by@moratorium08
WA
<?= for(;$c=fgets(STDIN);)echo+!fmod(sqrt(8*bindec($c)+1),1);
10110001 01011001 10001110 01001010 11001101 11100111 00110111 01111000 01101001 00001010 00100100 01010011 11111100 00010101 00111100 01111110 10100011 10111000 11011011 10011100 01101001 10111110 10101011 01111000 10010000 00000001 11010010 10001000 11010001 00000110 00001110 00001111 10011010 01001110 11001000 11101110 10011001 10000001 10000010 01000010 11101101 11111101 01011011 11101001 01010001 00000000 00101101 10000000 00011100 00000011
PHP Parse error: syntax error, unexpected 'for' (T_FOR) in /volume/CODE on line 1