#pragma warning disable

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.Serialization.Formatters.Binary;
using System.Text;
using System.Text.RegularExpressions;
using System.Diagnostics;
using System.Numerics;
using System.Collections;
using System.Timers;

static class MainClass
{
    public static void Main(string[] args)
    {
        var n = Console.ReadLine().ToInt32();
        var s = Console.ReadLine();
        var west = new int[n];
        var east = new int[n];
        if (s[0] == 'W')
            west[0] = 1;
        if (s[n- 1] == 'E')
            east[n - 1] = 1;
        for (int i = 1; i < n; i++)
        {
            if (s[i] == 'W')
                west[i] = west[i - 1] + 1;
            else
                west[i] = west[i - 1];
        }
        for (int i = n - 2; i >= 0; i--)
        {
            if (s[i] == 'E')
                east[i] = east[i + 1] + 1;
            else
                east[i] = east[i + 1];
        }
        east = east.Reverse().ToArray();

        var min = int.MaxValue / 2;
        for (int i = 0; i < n; i++)
        {

            int num = west[i] + east[s.Length - 1 - i] - 1;
            min = Math.Min(min, num);
        }
        Console.WriteLine(min);
        Console.ReadLine();
    }


    //public class Edge
    //{
    //    public int From;
    //    public int To;
    //    public int Cost;
    //}

    //public static List<KeyValuePair<int, int>> GetShortestPathes(int s, IEnumerable<Edge> edges, int vertices)
    //{
    //    var ls = new KeyValuePair<int, int>[vertices];

    //    return ls.ToList();
    //}


    #region ライブラリ

    #region 文字列処理

    public static int ToInt32(this string str) => int.Parse(str);
    public static BigInteger ToBigInteger(this string str) => BigInteger.Parse(str);
    public static List<string> SplittedStringToList(this string str) => str.Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries).ToList();
    public static List<int> SplittedStringToInt32List(this string str) => str.Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries).Select(x => int.Parse(x)).ToList();

    public static List<BigInteger> SplittedStringToBigInteger(this string str) => str.Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries).Select(x => BigInteger.Parse(x)).ToList();
    #endregion
    #region DeepClone
    public static T DeepClone<T>(this T src)
    {
        using (var memoryStream = new MemoryStream())
        {
            var binaryFormatter
              = new BinaryFormatter();
            binaryFormatter.Serialize(memoryStream, src);
            memoryStream.Seek(0, SeekOrigin.Begin);
            return (T)binaryFormatter.Deserialize(memoryStream);
        }
    }
    #endregion

    public static int Gcd(int a, int b)
    {
        if (b == 0)
            return a;
        return Gcd(b, a % b);
    }
    public static BigInteger Gcd(BigInteger a, BigInteger b)
    {
        if (b == 0)
            return a;
        return Gcd(b, a % b);
    }


    public static BigInteger Factorial(int n)
    {
        var dp = new BigInteger[n];
        dp[0] = 1;
        for (int i = 1; i < n; i++)
        {
            dp[i] = dp[i - 1] * (i + 1);
        }
        return dp[n - 1];
    }

    public static List<int> PrimeFactorize(int n)
    {
        var bases = n;
        var num = (int)Math.Pow(n, 0.5);
        var ls = new List<int>();
        for (int i = 2; i <= num; i++)
        {
            if (n % i == 0)
            {
                n = n / i;
                ls.Add(i);
                i--;
                continue;
            }
        }
        var nnn = 1;
        foreach (var item in ls)
        {
            nnn = nnn * item;
        }
        if (nnn != bases)
            ls.Add(n);
        return ls;
    }

    #endregion

}


Measured memory_bytes: 20192