#include <bits/stdc++.h>

using namespace std;

// N-E-S-W

int main(void) {
    string a, b;
    int an, bn, rot;
    cin >> a >> b;
    if (a == "N") an = 1;
    if (a == "E") an = 2;
    if (a == "S") an = 3;
    if (a == "W") an = 4;

    if (b == "N") bn = 1;
    if (b == "E") bn = 2;
    if (b == "S") bn = 3;
    if (b == "W") bn = 4;

    rot = bn - an;
    if (rot < 0) rot += 4;

    cout << rot << endl;
    return 0;
}