#include <stdio.h>
#include <bits/stdc++.h>
#include <atcoder/all>
using namespace atcoder;
using mint = modint998244353;
using namespace std;
#define rep(i,n) for(int i=0;i<(n);i++)
#define Inf 1000000001


int main(){
	
	map<char,int> mp;
	mp['N'] = 0;
	mp['E'] = 1;
	mp['S'] = 2;
	mp['W'] = 3;
	
	char a,b;
	cin>>a>>b;
	
	int A = mp[a];
	int B = mp[b];
	int ans = 0;
	while(A!=B){
		A++;
		A%=4;
		ans++;
	}
	cout<<ans<<endl;
	return 0;
}