X_MAX = 1000000
n = gets.to_i
x = gets.split.map(&:to_i)
dp = Array.new(X_MAX+1){0}
x.each{|i| dp[i] = 1}
ans = 0
(1..X_MAX).each{|i|
	if (dp[i] <= 0) then
		next
	end
	(i*2..X_MAX).step(i).each{|j|
		if (dp[j] >= 1) then
			dp[j] = [dp[j],dp[i]+1].max
		end
	}
	ans = [ans,dp[i]].max
}
p ans