#include<bits/stdc++.h>
using namespace std;
using ll = long long;
#define fi first
#define se second
#define all(a) a.begin(),a.end()
int main(){
  string s="NESW";
  char a,b;
  cin >> a >> b;
  for(int i=0; i<4; ++i){
    for(int j=0; j<4; ++j){
      if(a==s[i] && b==s[j]){
        cout << (j-i+4)%4 << endl;
      }
    }
  }
  return 0;
}