Rot123456789 by VVV

$r=<>;\x0d
$_=<>;\x0d
$,=$r|0?$r-13?M:N:A;\x0d
eval"y/!?[]$,-ZA-z/?![]A-za-n/";\x0d
print\x0d

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

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