local N = io.read("n")
local L = {}
local max_len = 0
local sum = 0
for i=1,N do
    L[i] = io.read("n")
    max_len = math.max(L[i], max_len)
    sum = sum + L[i]
end
sum = sum - max_len
print(sum < max_len and "Yes" or "No")