#include<iostream>
#include<string>
#include<algorithm>
#include<cctype>
#include<set>
#include<bitset>
#include<math.h>
#include<map>
#include<queue>
#include<iomanip>
using namespace std;

int main(){
    string a, b;
    int a1=-1, b1=-1, t= 0;
    vector<string> dir{"N", "E", "S", "W"};
    cin >> a >> b;
    while(1){
        if (a == dir[t]) a1 = t;
        if (b == dir[t]) b1 = t;
        if (a1 >= 0 && b1 >= 0) break;
        t++;
    }
    cout << ((b1 - a1)%4 + 4)% 4 << endl; 
}