reversed-c, 117 bytes

Result

AC

Duration

680ms

Code [DL]

{{؛((ɾ>ʞ)+,0,)ɹɐɥɔʇnd؛()ɹɐɥɔʇǝƃ=ɾ؛ɾ=ʞ}(++ı؛101>ı؛()ɹɐɥɔʇǝƃ=ɾ)ɹoɟ}(ı)uıɐɯ؛ʞ'ɾ

Disassembly

j,k;main(i){for(j=getchar();i<101;i++){k=j;j=getchar();putchar('0'+(k<j));}}

stdin

59710190179876543210512027039015726149507012069158471756324217156162823164085183510123456789209493190

stdout

1000110111000000000101011011011101011001011011011010101001001011010101010010010100111111111001010010

stderr

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

strace