//g++ 2.cpp -std=c++14 -O2 -I .
#include <bits/stdc++.h>
using namespace std;

#include <atcoder/all>
using namespace atcoder;

using ll = long long;
using ld = long double;

using vi = vector<int>;
using vvi = vector<vi>;
using vll = vector<ll>;
using vvll = vector<vll>;
using vld = vector<ld>;
using vvld = vector<vld>;
using vst = vector<string>;
using vvst = vector<vst>;

#define fi first
#define se second
#define pb push_back
#define pq_big(T) priority_queue<T,vector<T>,less<T>>
#define pq_small(T) priority_queue<T,vector<T>,greater<T>>
#define all(a) a.begin(),a.end()
#define rep(i,start,end) for(ll i=start;i<(ll)(end);i++)
#define per(i,start,end) for(ll i=start;i>=(ll)(end);i--)
#define uniq(a) sort(all(a));a.erase(unique(all(a)),a.end())

string s="NESW";

int main(){
  ios::sync_with_stdio(false);
  cin.tie(nullptr);

  char a,b;
  cin>>a>>b;

  int c,d;
  rep(i,0,4){
    if(a==s[i]){
      c=i;
    }
    if(b==s[i]){
      d=i;
    }
  }

  int ans=0;
  while(true){
    if(c%4==d%4){
      cout<<ans<<endl;
      return 0;
    }
    c++;
    ans++;
  }
}