#!/usr/bin/perl
use Encode;
use utf8;
use List::Util qw/max min/;

$count = 0;
$tmpcount = 0;
$temp =0;
$i = 1;
binmode STDIN, ':encoding(utf8)';
#binmode STDOUT, ':encoding(cp932)';
#binmode STDERR, ':encoding(CP932)';



while (<STDIN>) {
	my $text = $_;
	my @te = split(//, $text);

	foreach my $tepart(@te) {
		if ($tepart eq "…") {
			if (($tmpcount+1) eq $temp) {
				$count++;
			} else {
				if ($count > 0) {
					$ans[$i] = $count;
					$i++;
				}
				$count = 1;
			}
			$tmpcount = $temp;
		}
		$temp++;
	}
	$ans[$i] = $count;

	if ($i == 1) {
		print "$ans[1]\n";
	} else {
		print max(@ans);
	}
}