#include <bits/stdc++.h>

using namespace std;
void fast_io() {
    ios::sync_with_stdio(false);
    std::cin.tie(nullptr);
}

int main() {
    fast_io();
    char a, b;
    cin >> a >> b;
    string s = {a, b};
    sort(s.begin(), s.end());
    if (a == b) {
        cout << 0 << endl;
    } else if (s == "NS" || s == "EW") {
        cout << 1 << endl;
    } else {
        cout << 2 << endl;
    }
}