#!/usr/bin/perl

use strict;
use warnings;


my $str = <>;
chomp $str;
my @array = split //, $str;

my ($n, $e, $w, $s) = (0, 0, 0, 0);

for(my $i = 0; $i < length $str; $i++) {
	if ($array[$i] eq 'N') {
		$n++;
	} elsif($array[$i] eq 'E') {
		$e++;
	} elsif ($array[$i] eq 'W') {
		$w++;
	} elsif($array[$i] eq 'S') {
		$s++;
	}
	
}

$n -= $s;
$e -= $w;

$n *= $n;
$e *= $e;

my $ans = $n + $e;
$ans = sqrt $ans;
$ans += 0.000005;
$ans *= 100000;
$ans = int $ans;
$ans /= 100000;

print "$ans\n";

exit;