golfscript, 7 bytes

Result

AC

Duration

558ms

Code [DL]

{96<}/;

stdin

ABCDEFgHIJKLMNOPQrStuVWXYZ

stdout

11111101111111111010011111

stderr

strace

12    execve("/bin/sh", ["/bin/sh", "/root/script", "/volume/CODE"], 0x7fff6a726cd8 /* 9 vars */) = 0
14    execve("/usr/local/ruby-latest/bin/ruby", ["/usr/local/ruby-latest/bin/ruby", "/root/golfscript.rb", "/volume/CODE"], 0x7f3544465368 /* 9 vars */ <unfinished ...>
13    execve("/bin/cat", ["cat", "-"], 0x7f3544465270 /* 9 vars */ <unfinished ...>
14    <... execve resumed>)             = 0
13    <... execve resumed>)             = 0
13    +++ exited with 0 +++
12    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=13, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
14    +++ exited with 0 +++
12    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14, si_uid=0, si_status=0, si_utime=5, si_stime=1} ---
12    +++ exited with 0 +++