#!/usr/bin/env ruby
# frozen_string_literal: true

class Main
  def run
    current = 50
    count = 0

    $stdin.each_line do |line|
      direction, magnitude = line[0], line[1..].to_i

      case direction
      when "R"
        current = (current + magnitude) % 100
      when "L"
        current = (current - magnitude) % 100
      end

      if current == 0
        count += 1
      end
    end

    puts count
  end
end

Main.new.run