import java.awt.Point;
class C{
	public static void main(String[]$){
		Point p=new Point(0,0);
		for(char c:new java.util.Scanner(System.in).next().toCharArray()) {
			if(c=='N')++p.y;
			if(c=='E')++p.x;
			if(c=='W')--p.x;
			if(c=='S')--p.y;
		}
		System.out.println(p.distance(0,0));
	}
}