#include <bits/stdc++.h>
using namespace std;
#define int long long
signed main(){
  string S = "NESW";
  char a,b;
  cin>>a>>b;
  if(a == 'N'){
      if(b == 'N') cout<<0<<endl;
      if(b == 'E') cout<<1<<endl;
      if(b == 'S') cout<<2<<endl;
      if(b == 'W') cout<<3<<endl;
  }
  if(a == 'E'){
      if(b == 'N') cout<<3<<endl;
      if(b == 'E') cout<<0<<endl;
      if(b == 'S') cout<<1<<endl;
      if(b == 'W') cout<<2<<endl;
  }
  if(a == 'S'){
      if(b == 'N') cout<<2<<endl;
      if(b == 'E') cout<<3<<endl;
      if(b == 'S') cout<<0<<endl;
      if(b == 'W') cout<<1<<endl;
  }
  if(a == 'W'){
      if(b == 'N') cout<<1<<endl;
      if(b == 'E') cout<<2<<endl;
      if(b == 'S') cout<<3<<endl;
      if(b == 'W') cout<<0<<endl;
  }
}