j = gets.chomp.split(".").map(&:to_i)
v = gets.chomp.split(".").map(&:to_i)
if v[0] > j[0]
  puts "NO"
elsif v[0] < j[0]
  puts "YES"
else
  if v[1] > j[1]
    puts "NO"
  elsif v[1] < j[1]
    puts "YES"
  else
    puts v[2] > j[2] ? "NO" : "YES"
  end
end