use strict;
use warnings;

$_=<DATA>;
chomp;
print;
while (<DATA>) {
	chomp;
	s/^\s*$// or /^\D/ or print "\n";
	print;
}
print "\n";

__DATA__
4374564735|fegfg|sfffsg|QDFWFWwefwe

cty|Sd|45|445|35
7345634785|24756|4864586|2356
845245|2347624|264|2376274|2846242
|sfh|Sgfdg|EFgefg|434590|563456
|9345890345|84|3457|345|wdfdhiwdfh
324523|24562|248|2048|2323480|2923472
|3568245|34057|23|43057345734|2472