const
  xs = ["E", "S", "W", "N", "E", "S", "W"]

let
  a, b = readLine stdin
var
  flg = false
  cnt: int

for x in xs:
  if x == a:
    cnt = 0
    flg = true
    
  if flg:
    if x == b:
      echo cnt
      quit()
  
  inc cnt