#include <bits/stdc++.h>

using namespace std;
char q[66];
int ans;

//南风，向北走
//西风，向东走
//东风，向西走
//北风，向南走
int main() {
    int x, y, x1, y1;
    cin >> x >> y >> x1 >> y1;
    int n;
    cin >> n;
    for (int i = 0; i < n; i++) {//输入环节
        cin >> q[i];
    }
    for (int i = 0; i < n; i++) {
        if (q[i] == 'N' && x < x1) {
            x++;
            ans++;
            continue;
        }
        if (q[i] == 'S' && x > x1) {
            x--;
            ans++;
            continue;
        }
        if (q[i] == 'E' && y < y1) {
            y++;
            ans++;
            continue;
        }
        if (q[i] == 'W' && y > y1) {
            y--;
            ans++;
            continue;
        }
        if (x == x1 && y == y1) {
            cout << ans << endl;
            return 0;
        }
    }
    puts("-1");
    return 0;
}