#include <bits/stdc++.h>
#define f first
#define s second
using namespace std;
typedef long long int ll;

void routine(){
	char A,B;
	cin >> A >> B;
	map<char,ll> m;
	m['N'] = 0;
	m['E'] = 1;
	m['S'] = 2;
	m['W'] = 3;
	if(A == B){
		cout << 0;
		return;
	}
	if(m[A] < m[B]){
		cout << m[B] - m[A];
		return;
	}
	cout << 4 - m[A] + m[B];
	return;
}

int main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	ll t = 1;
	while(t--){
		routine();
	}
	return 0;
}