reversed-c, 78 bytes

Result

AC

Duration

693ms

Code [DL]

{؛(b/d+8*9)ɹɐɥɔʇnd||b¡(d=b؛01-()ɹɐɥɔʇǝƃ=d؛)ɹoɟ}(d)uıɐɯ؛b

Disassembly

q;main(p){for(;p=getchar()-10;q=p)!q||putchar(6*8+p/q);}

stdin

12529381838063765239487470123456789686424876783065824914831658151606297590940840842594149876543210151

stdout

1101010101010100011010010111111111010001100110010101101100101010101010010100100100110011000000000110

stderr

/tmp/code.c:1:1: warning: data definition has no type or storage class
 q;main(p){for(;p=getchar()-10;q=p)!q||putchar(6*8+p/q);}
 ^
/tmp/code.c:1:1: warning: type defaults to 'int' in declaration of 'q' [-Wimplicit-int]
/tmp/code.c:1:3: warning: return type defaults to 'int' [-Wimplicit-int]
 q;main(p){for(;p=getchar()-10;q=p)!q||putchar(6*8+p/q);}
   ^~~~
/tmp/code.c: In function 'main':
/tmp/code.c:1:3: warning: type of 'p' defaults to 'int' [-Wimplicit-int]
/tmp/code.c:1:18: warning: implicit declaration of function 'getchar' [-Wimplicit-function-declaration]
 q;main(p){for(;p=getchar()-10;q=p)!q||putchar(6*8+p/q);}
                  ^~~~~~~
/tmp/code.c:1:1: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
 q;main(p){for(;p=getchar()-10;q=p)!q||putchar(6*8+p/q);}
 ^
/tmp/code.c:1:39: warning: implicit declaration of function 'putchar' [-Wimplicit-function-declaration]
 q;main(p){for(;p=getchar()-10;q=p)!q||putchar(6*8+p/q);}
                                       ^~~~~~~
/tmp/code.c:1:37: warning: value computed is not used [-Wunused-value]
 q;main(p){for(;p=getchar()-10;q=p)!q||putchar(6*8+p/q);}
                                     ^~

strace