#include <bits/stdc++.h>
#define rep(i, n) for (int i = 0; i < n; ++i)
typedef long long ll;
using namespace std;

int main() {
    cin.tie(0)->sync_with_stdio(0);

    string S, T;
    cin >> S >> T;

    string ax = "NESW";
    int a = ax.find(S);
    int b = ax.find(T);

    int ans = (b - a + 4) % 4;
    cout << ans << "\n";

    return 0;
}