package main

import (
	"fmt"
)

func main() {
	var N int
	const MAX = 1e6
	dp := make([]int, MAX + 1)
	fmt.Scan(&N)

	for i := 0; i < N; i++ {
		var x int
		fmt.Scan(&x)
		dp[x] = 1

	}
	for i := 1; i <= MAX; i++ {
		if dp[i] == 0 {
			continue
		}
		for l := 2 * i; l <= 1e6; l += i {
			if dp[l] == 0 {
				continue
			}

			dp[l] = max(dp[l], dp[i] + 1)
		}
	}
	mx := 0
	for i := 0; i <= MAX; i++ {
		mx = max(mx, dp[i])
	}
	fmt.Println(mx)
}
func max(a int, b int) int {
	if a < b {
		return b
	}
	return a
}