#include <stdio.h> #include <bits/stdc++.h> #include <atcoder/all> using namespace atcoder; using mint = modint998244353; using namespace std; #define rep(i,n) for(int i=0;i<(n);i++) #define Inf 1000000001 int main(){ map<char,int> mp; mp['N'] = 0; mp['E'] = 1; mp['S'] = 2; mp['W'] = 3; char a,b; cin>>a>>b; int A = mp[a]; int B = mp[b]; int ans = 0; while(A!=B){ A++; A%=4; ans++; } cout<<ans<<endl; return 0; }