#include <bits/stdc++.h>
using namespace std;

string s[2];
int a[2];

int main()
{	
	cin >> s[0] >> s[1];

	for (int i = 0; i < 2; i++) {
		if (s[i] == "N")
			a[i] = 0;
		else if (s[i] == "E")
			a[i] = 1;
		else if (s[i] == "S")
			a[i] = 2;
		else
			a[i] = 3;
	}
		cout << (a[1] - a[0] + 4) % 4 << endl;
}