#include<bits/stdc++.h>
using namespace std;
int main(){
    char a,b;
    cin>>a>>b;
    vector<char>A={'N','E','S','W'};
    int s=0,g=0;
    for(int i=0;i<4;i++)if(a==A[i])s=i;
    for(;g<4;g++)if(A[(s+g)%4]==b)break;
    cout<<g<<'\n';
}