package yukicoder113; import java.util.Scanner; public class Main { public static void main(String[] args){ Scanner sc=new Scanner(System.in); double x=0; double y=0; String str=sc.next(); char[] c=str.toCharArray(); for(int i=0;i<c.length;i++){ if(c[i]=='N'){ y++; }else if(c[i]=='S'){ y--; }else if(c[i]=='W'){ x--; }else if(c[i]=='E'){ x++; } } System.out.println(Math.sqrt(x*x+y*y)); } }