"use strict";
function Main(input) {
    let cin = new Inputer(input);
    let N = cin.getInt(), S = cin.getStr();
    let L = new Array(N);//E
    let s = 0;
    for (let n = 0; n < N; n++) {
        s = L[n] = s + (S[n] == 'E' ? 1 : 0);
    }
    let R = new Array(N);//W
    s = 0;
    for (let n = N-1; n >= 0; n--) {
        s = R[n] = s + (S[n] == 'W' ? 1 : 0);
    }
    let ans = 1e6;
    for (let n = 0; n < N; n++) {
        let w = (L[N-1] - L[n]) + (R[0] - R[n]);
        if (ans > w) ans = w;
    }
    console.log(ans);
}
class Inputer{constructor(t){if(typeof t=='undefined')throw new Error('引数（stdin）を省略できません！');this.cnt=0,this.items=t.split(/\n|\s/)}getInt(){return this.items[this.cnt++]-0}getIntArray(t){if(typeof t=='undefined')throw new Error('引数（1以上）を省略できません！');let r=new Array(t);for(let e=0;e<t;e++)r[e]=this.getInt();return r}getStr(){return this.items[this.cnt++]}getStrArray(t){if(typeof t=='undefined')throw new Error('引数（1以上）を省略できません！');let r=new Array(t);for(let e=0;e<t;e++)r[e]=this.getStr();return r}}
if (typeof window == "undefined") Main(require("fs").readFileSync("/dev/stdin", "utf8"));