#include<bits/stdc++.h>
using namespace std;
int main(){
	string s="NESW";
	string a,b;
	int la,lb;
	cin>>a>>b;
	la=s.find(a);
	lb=s.find(b);
	if(la>lb){
		lb+=4;
	}
	cout<<lb-la<<endl;
	
}