Main

import java.util.*;
public class Main{
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        String s = scan.next();
        int[] arr = new int[4];
        arr[0] = s.indexOf('N');
        arr[1] = s.indexOf('S');
        arr[2] = s.indexOf('E');
        arr[3] = s.indexOf('W');

        if((arr[0] >= 0 && arr[1] >= 0 && arr[2] >= 0 && arr[3] >= 0) ||
            (arr[0] >= 0 && arr[1] >= 0 && arr[2] == -1 && arr[3] == -1) ||
            (arr[0] == -1 && arr[1] == -1 && arr[2] >= 0 && arr[3] >= 0)) {
            System.out.println("Yes");
        }
        else {
            System.out.println("No");
        }
    }
}