by@kurgm
WA
import std.stdio,std.math;void main(){int a;for(;readf!" %b"(a);)write(1-(sqrt(1+a*8.)%1>0));}00000011 10110100 10001000 00100010 00110111 00110111 00011001 01001110 00001001 11010010 01000010 11110011 10011001 11101110 10111110 00000111 10111011 01101001 01101111 11111101 00001111 10101011 11000010 00011100 00101011 01011011 01010100 00110101 00010101 11101101 11100111 01101101 00100100 11110010 01100101 01011100 00000110 01111000 10000000 01111100 00101101 00101000 00000001 00001010 00001110 00000000 00000011 10010101 01011001 10101110
/usr/lib/gcc/x86_64-linux-gnu/5/include/d/std/stdio.d:3202:6: error: tuple A is used as a type
uint readf(A...)(in char[] format, A args)
^
/tmp/code.d:1:50: error: template instance std.stdio.readf!" %b" error instantiating
import std.stdio,std.math;void main(){int a;for(;readf!" %b"(a);)write(1-(sqrt(1+a*8.)%1>0));}
^
/home/esolang/bin/d-gdc: line 6: /tmp/code: No such file or directory
rm: cannot remove '/tmp/code': No such file or directory