#include <iostream>
using namespace std;
int main(){
    string s = "ESWNESWN";
    char c,h;cin>>c>>h;
    int nw = 0;
    int ans = 0;
    for(int i = 0; 8 > i; i++){
        if(nw == 0 && c == s[i]){
            nw = 1;
        }
        if(nw == 1 && h == s[i]){
            cout << ans << endl;
            return 0;
        }
        if(nw == 1){
            ans++;
        }
    }
}