class String
  def succ
    case self
    when "E"
      "S"
    when "S"
      "W"
    when "W"
      "N"
    when "N"
      "E"
    else
      super
    end
  end
end

A = gets.chomp
B = gets.chomp

puts (A..).take_while { _1 != B }.count