#!/usr/bin/env perl

$_ = 'Leave aerobic shrink curriculum, try Public starvation, write intractable lustrous JAPH - both work.';

$X = 44802;

sub _{$s += ++$n * ord for @_; $n %= @I; $s %= $X};

@I = split '';

$_I = _@I;

$_/=$_ for @_ = 1..$_I%34; 

for (0..$X) {

    $J = $c++ % @_;
    $V = $_[$J];
    
    for (2..@_) {
        $j = ($J + ++$i) % @_;
        $_[$j] = ( ($_=$V) + ($V=$_[$j]) ) % @I;
    }

    last if $_I == _@I[@_];

    ($i+=1) %= @_;
}

print @I[@_];