a=input()
b=input()
if a=="E" and b=="E":
  print("0")
elif a=="E" and b=="S":
  print("1")
elif a=="E" and b=="W":
  print("2")
elif a=="E" and b=="N":
  print("3")
elif a=="S" and b=="S":
  print("0")
elif a=="S" and b=="W":
  print("1")
elif a=="S" and b=="N":
  print("2")
elif a=="S" and b=="E":
  print("3")
elif a=="W" and b=="W":
  print("0")
elif a=="W" and b=="N":
  print("1")
elif a=="W" and b=="E":
  print("2")
elif a=="W" and b=="S":
  print("3")
elif a=="N" and b=="N":
  print("0")
elif a=="N" and b=="E":
  print("1")
elif a=="N" and b=="S":
  print("2")
else :
  print("3")