#include <bits/stdc++.h>
using namespace std;
#define rep(i,a,b) for(LL i = a;i<b; i++)
#define rrep(i,a,b) for(LL i = a;i>=b; i--)
#define INF ((1LL<<62)-(1LL<<31))
#define ooki 9,223,372,036,854,775,807
#define tii -9,223,372,036,854,775,808
typedef long long LL;
int main(){
  char a,b;int c,d;
  cin>>a>>b;
  if(a=='N'){ c=1;}
  if(a=='E'){ c=2;}
  if(a=='S'){ c=3;}
  if(a=='W'){ c=4;}
  if(b=='N'){ d=1;}
  if(b=='E'){ d=2;}
  if(b=='S'){ d=3;}
  if(b=='W'){ d=4;}
  if(a==b){cout<<0<<endl;return 0;}
  rep(i,1,4){
    c++;
    if(c%4==d%4){cout<<i<<endl;return 0;}
  }
  
    
  
}