#include"bits/stdc++.h"
#include<boost/multi_array.hpp>
#include<boost/optional.hpp>
#include<boost/range/irange.hpp>
#include<boost/range/algorithm.hpp>
#include<boost/range/adaptors.hpp>
using namespace std;

namespace adaptor = boost::adaptors;

void Main(){
  string a,b;
  cin >> a >> b;
  map<string,int> m;
  m["N"] = 0;
  m["E"] = 1;
  m["S"] = 2;
  m["W"] = 3;
  cout << (m[b]-m[a]+4)%4;
}

int main(){
	std::cin.tie(nullptr);
	std::ios_base::sync_with_stdio(false);
	std::cout << std::fixed << std::setprecision(15);
	Main();
}