#!/usr/bin/env ruby
# -*- coding: utf-8 -*-
  
if __FILE__ == $0
  while line = STDIN.gets
    tokens = line.chomp!.split.map!(&:to_i)
    a, b, c = tokens[0], tokens[1], tokens[2]
    if a < b && b < c
      puts "Yes"
    else
      puts "No"
    end
  end
end