reversed-c, 81 bytes

Result

AC

Duration

726ms

Code [DL]

{؛(b/d+8ᔭ)ɹɐɥɔʇnd⅋⅋b(d=b؛01-()ɹɐɥɔʇǝƃ=d؛)ɹoɟ}(d)uıɐɯ؛b

Disassembly

q;main(p){for(;p=getchar()-10;q=p)q&&putchar(48+p/q);}

stdin

52734289685450704056147060352034129501234567891738568242010960315198765432105720601587696976104982147

stdout

0101011010010101011011010110011011001111111110101011010010100101010000000001100101110010100001100011

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(48+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(48+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(48+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(48+p/q);}
 ^
/tmp/code.c:1:38: warning: implicit declaration of function 'putchar' [-Wimplicit-function-declaration]
 q;main(p){for(;p=getchar()-10;q=p)q&&putchar(48+p/q);}
                                      ^~~~~~~
/tmp/code.c:1:36: warning: value computed is not used [-Wunused-value]
 q;main(p){for(;p=getchar()-10;q=p)q&&putchar(48+p/q);}
                                    ^~

strace