version_old = gets.chomp.split('.').map &:to_i
version_judge = gets.chomp.split('.').map &:to_i

is_old = false
if version_old[0] > version_judge[0]
  is_old = true
elsif version_old[0] == version_judge[0]
  if version_old[1] > version_judge[1]
    is_old = true
  elsif version_old[1] == version_judge[1]
    if version_old[2] >= version_judge[2]
      is_old = true
    end
  end
end

if is_old
  puts "YES"
else
  puts "NO"
end