#!/usr/bin/perl
use strict;
use warnings;
my $prefix;
while (<DATA>){
next unless $_;
if ($_ =~ /^!/){
$prefix = $_;
next;
}
else{
}
}
__DATA__
!Denver
Line 1
Line 2
Line 3
!New York
Line 1
Line 2
IyEvdXNyL2Jpbi9wZXJsCnVzZSBzdHJpY3Q7CnVzZSB3YXJuaW5nczsKbXkgJHByZWZpeDsKd2hpbGUgKDxEQVRBPil7CiAgICBjaG9tcDsKICAgIG5leHQgdW5sZXNzICRfOwogICAgaWYgKCRfID1+IC9eIS8pewogICAgICAgICRwcmVmaXggPSAkXzsKICAgICAgICBuZXh0OwogICAgfQogICAgZWxzZXsKICAgICAgICBwcmludCAiJHByZWZpeC4kX1xuIjsKICAgIH0KfQpfX0RBVEFfXwohRGVudmVyCgpMaW5lIDEKTGluZSAyCkxpbmUgMwoKIU5ldyBZb3JrCgpMaW5lIDEgCkxpbmUgMg==