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#!/usr/bin/perl use warnings; ... my $valid = $string =~ tr/"// % 2 ? 0 : 1; print "$valid: $string\n"; }
($q=q:Sq=~/;[c](.)(.)/;chr(-||-|5+lengthSq)`"S|oS2"`map{chr |+ord }map{substrSq`S_+|`|}3E|-|`7**2-3:)=~y+S|`+$1,++print+eval$q,q,a,