Sharkovskii order by o-cn

<?for(;$b=$a&-$a=+fgets(STDIN);ksort($c))$c[$a-$b?$a+5e7*$b:2e9-$a]=$a?><?=join(~\xf5,$c);

Note that non-ascii characters in the above source code will be escaped (such as \x9f).

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