reversed-c, 106 bytes

Result

AC

Duration

739ms

Code [DL]

{{؛((d>b)+,0,)ɹɐɥɔʇnd؛()ɹɐɥɔʇǝƃ=d؛d=b}(++o؛101>o؛()ɹɐɥɔʇǝƃ=d)ɹoɟ}(o)uıɐɯ؛b'd

Disassembly

p,q;main(o){for(p=getchar();o<101;o++){q=p;p=getchar();putchar('0'+(q<p));}}

stdin

79710123456789783049586282935473519585707475903513465965798765432109792369278762801947834791576758019

stdout

1000111111111010011010010101010101010101010101101110100110000000001010111011000101101101110110101011

stderr

/tmp/code.c:1:1: warning: data definition has no type or storage class
 p,q;main(o){for(p=getchar();o<101;o++){q=p;p=getchar();putchar('0'+(q<p));}}
 ^
/tmp/code.c:1:1: warning: type defaults to 'int' in declaration of 'p' [-Wimplicit-int]
/tmp/code.c:1:3: warning: type defaults to 'int' in declaration of 'q' [-Wimplicit-int]
 p,q;main(o){for(p=getchar();o<101;o++){q=p;p=getchar();putchar('0'+(q<p));}}
   ^
/tmp/code.c:1:5: warning: return type defaults to 'int' [-Wimplicit-int]
 p,q;main(o){for(p=getchar();o<101;o++){q=p;p=getchar();putchar('0'+(q<p));}}
     ^~~~
/tmp/code.c: In function 'main':
/tmp/code.c:1:5: warning: type of 'o' defaults to 'int' [-Wimplicit-int]
/tmp/code.c:1:19: warning: implicit declaration of function 'getchar' [-Wimplicit-function-declaration]
 p,q;main(o){for(p=getchar();o<101;o++){q=p;p=getchar();putchar('0'+(q<p));}}
                   ^~~~~~~
/tmp/code.c:1:56: warning: implicit declaration of function 'putchar' [-Wimplicit-function-declaration]
 p,q;main(o){for(p=getchar();o<101;o++){q=p;p=getchar();putchar('0'+(q<p));}}
                                                        ^~~~~~~

strace