reversed-c, 80 bytes

Result

WA

Duration

714ms

Code [DL]

{؛1+()ɹɐɥɔʇǝƃ=X((0:,0,+W/X¿W⅋X)ɹɐɥɔʇnd؛X=W؛)ɹoɟ}(W'X)uıɐɯ

Disassembly

main(X,M){for(;M=X;putchar(X&M?X/M+'0':0))X=getchar()+1;}

stdin

65026340457501234567890127941987654321087367878012821819694686581971039739201501202782564164578761073

stdout

g0011010111001111111110111100100000000010011101011100101010110010100011001001101101110110010111000010

stderr

/tmp/code.c:1:1: warning: return type defaults to 'int' [-Wimplicit-int]
 main(X,M){for(;M=X;putchar(X&M?X/M+'0':0))X=getchar()+1;}
 ^~~~
/tmp/code.c: In function 'main':
/tmp/code.c:1:1: warning: type of 'X' defaults to 'int' [-Wimplicit-int]
/tmp/code.c:1:1: warning: type of 'M' defaults to 'int' [-Wimplicit-int]
/tmp/code.c:1:1: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
/tmp/code.c:1:20: warning: implicit declaration of function 'putchar' [-Wimplicit-function-declaration]
 main(X,M){for(;M=X;putchar(X&M?X/M+'0':0))X=getchar()+1;}
                    ^~~~~~~
/tmp/code.c:1:45: warning: implicit declaration of function 'getchar' [-Wimplicit-function-declaration]
 main(X,M){for(;M=X;putchar(X&M?X/M+'0':0))X=getchar()+1;}
                                             ^~~~~~~

strace