#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
  #include "settings/debug.cpp"
  #define _GLIBCXX_DEBUG
#else
  #define Debug(...) void(0)
#endif
using ll = long long;
#define rep(i, n) for (int i = 0; i < (n); ++i)

char nxt(char c) {
  switch (c) {
    case 'N': return 'E';
    case 'E': return 'S';
    case 'S': return 'W';
    case 'W': return 'N';
  }
}

int main() {
  char a, b;
  cin >> a >> b;
  int ans = 0;
  while (a != b) {
    a = nxt(a);
    ans++;
  }
  cout << ans << endl;
  return 0;
}