#include <bits/stdc++.h>
using namespace std;
int main(){
    char a, b;
    cin >> a >> b;
    vector<char> c = {'E', 'S', 'W', 'N'};
    int now = -1;
    for(int i = 0; i < 4; i++){
        if(c[i] == a) now = i;
    }
    int cnt = 0;
    while(c[now] != b){
        now++;
        cnt++;
        now %= 4;
    }
    cout << cnt << endl;
}