(loop(do('(read)(a 500(round(+ .1(* #1=(signum(- .'a))d)a)))(d 250(/ d 2)))((or(format t"~A ~[>~;= ~;<~] "a(1+ #1#))(= .'a)))))
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
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