A = input()
B = input()

if A == B:
  print(0)
elif (A == "E" and B == "N") or (A == "S" and B == "E") or (A == "W" and B == "S") or (A == "N" and B == "W"):
  print(3)
elif (A == "E" and B == "W") or (A == "S" and B == "N") or (A == "W" and B == "E") or (A == "N" and B == "S"):
  print(2)
else:
  print(1)