n = gets.chomp.to_i;
length_array = gets.chomp.split(" ").map(&:to_i)
sum_length = 0
length_array.each{|length|
  sum_length += length
}
is_polygon = true
length_array.each{|length|
  if (sum_length - length) <= length
    is_polygon = false
    break
  end
}
if is_polygon
  print("Yes\n")
else
  print("No\n")
end