N = gets.chomp.to_i
l = gets.split(' ')

l = l.map{|x| x.to_i}
l = l.sort_by{|x| x}.reverse

max = l[0]
l = l.drop(1)

sum = 0
l.each do |x|
    sum += x
end

if max < sum then
    print 'Yes'
else
    print 'No'
end