#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <set>
#include <map>
using namespace std;
typedef long long ll;
#define rep(i,n) for (int i=0;i < (int)(n);i++)

void slove(){
   char a,b;
   cin >> a >> b;
   int ans = 0;
   if (b == 'E') ans = 1;
   else if (b == 'S') ans = 2;
   else if (b == 'W') ans = 3;
   
   if (a == 'E') ans -= 1;
   else if (a == 'S') ans -=2;
   else if (a == 'W') ans -=3;

   cout << (ans+4)%4 << endl;
}
int main(){
  int tt = 1;
  //cin >> tt;
  while(tt--){
   slove();
  }
  return 0;
}