package main

import (
	"bufio"
	"fmt"
	"os"
	"sort"
	"strconv"
)

func getScanner(fp *os.File) *bufio.Scanner {
	scanner := bufio.NewScanner(fp)
	scanner.Split(bufio.ScanWords)
	scanner.Buffer(make([]byte, 1000005), 1000005)
	return scanner
}
func getNextString(scanner *bufio.Scanner) string {
	scanner.Scan()
	return scanner.Text()
}
func getNextInt(scanner *bufio.Scanner) int {
	i, _ := strconv.Atoi(getNextString(scanner))
	return i
}
func getNextInt64(scanner *bufio.Scanner) int64 {
	i, _ := strconv.ParseInt(getNextString(scanner), 10, 64)
	return i
}
func getNextUint64(scanner *bufio.Scanner) uint64 {
	i, _ := strconv.ParseUint(getNextString(scanner), 10, 64)
	return i
}
func getNextFloat64(scanner *bufio.Scanner) float64 {
	i, _ := strconv.ParseFloat(getNextString(scanner), 64)
	return i
}
func main() {
	fp := os.Stdin
	wfp := os.Stdout
	cnt := 0
	if os.Getenv("MASPY") == "ますピ" {
		fp, _ = os.Open(os.Getenv("BEET_THE_HARMONY_OF_PERFECT"))
		cnt = 3
	}
	if os.Getenv("MASPYPY") == "ますピッピ" {
		wfp, _ = os.Create(os.Getenv("NGTKANA_IS_GENIUS10"))
	}
	scanner := getScanner(fp)
	writer := bufio.NewWriter(wfp)
	solve(scanner, writer)
	for i := 0; i < cnt; i++ {
		fmt.Fprintln(writer, "-----------------------------------")
		solve(scanner, writer)
	}
	writer.Flush()
}
func solve(scanner *bufio.Scanner, writer *bufio.Writer) {
	n := getNextInt(scanner)
	xx := make([]int, n)
	mm := map[int]int{}
	for i := 0; i < n; i++ {
		xx[i] = getNextInt(scanner)
	}
	sort.Ints(xx)
	for i := 0; i < n; i++ {
		mm[xx[i]] = i + 1
	}
	dp := make([]cint, n+1)
	var ans cint
	for i := 1; i < n+1; i++ {
		for _, d := range divs(xx[i-1]) {
			dp[i].max(dp[mm[d]] + 1)
		}
		ans.max(dp[i])
	}
	fmt.Fprintln(writer, ans)
}
func divs(x int) []int {
	dd := make([]int, 1)
	dd[0] = 1
	for i := 2; i*i <= x; i++ {
		if x%i == 0 {
			dd = append(dd, i)
			if i*i < x {
				dd = append(dd, x/i)
			}
		}
	}
	sort.Ints(dd)
	return dd
}

type cint int

func (x *cint) min(y cint) *cint {
	if *x > y {
		*x = y
	}
	return x
}
func (x *cint) max(y cint) *cint {
	if *x < y {
		*x = y
	}
	return x
}