#include<bits/stdc++.h>
using namespace std;
int main(){
    char a,b;
    cin>>a>>b;
    if(a==b){
        cout<<0<<endl;
        return 0;
    }
    vector<char> v={'N','E','S','W','N','E','S','W'};
    int k,l;
    bool done=false;
    for(int i=0;i<8;i++){
      if(v[i]==a){
        k=i;
        done=true;
      }
      if(v[i]==b&&done){
        l=i; 
        break;
      }
    }
    cout<<l-k<<endl;
}