#!/usr/bin/perl
use Data::Dumper;
@input = <STDIN>;
sub max
{
my($m, $n) = @_;
if($m > $n){ $m } else{ $n };
}
IyEvdXNyL2Jpbi9wZXJsCgp1c2UgRGF0YTo6RHVtcGVyOwoKQGlucHV0ID0gPFNURElOPjsKcHJpbnQgQGlucHV0OwpwcmludCAmbWF4KEBpbnB1dCk7CgpzdWIgbWF4CnsKCW15KCRtLCAkbikgPSBAXzsKCXByaW50IER1bXBlcihcQF8pOwoJaWYoJG0gPiAkbil7ICRtIH0gZWxzZXsgJG4gfTsKfQ==