package main import ( "fmt" "bufio" "os" "strconv" ) //•*¨*•.¸¸♪I/O•*¨*•.¸¸♪ var ( sc = bufio.NewScanner(os.Stdin) wr = bufio.NewWriter(os.Stdout) ) func scanInt() int { sc.Scan() a,_ := strconv.Atoi(sc.Text()) return a } func scanInt64() int64 { sc.Scan() a,_ := strconv.ParseInt(sc.Text(),10,64) return a } func scanFloat64() float64 { sc.Scan() a,_ := strconv.Atoi(sc.Text()) return float64(a) } func scanInts(n int) []int { res := make([]int, n) for i := 0; i < n; i++ { res[i] = scanInt() } return res } func scanText() string { sc.Scan() return sc.Text() } func printInts(a ...int) { for i, e := range a { fmt.Fprint(wr, e) if i != len(a)-1 { fmt.Fprint(wr, " ") } } fmt.Fprintln(wr) wr.Flush() } //•*¨*•.¸¸♪Main•*¨*•.¸¸♪( -ω-)ノ ( ・ω・) func main() { sc.Split(bufio.ScanWords) // sc.Buffer(make([]byte, 10000), 100000000) n := scanInt() a := scanInts(n) ldi := make(map[int]int, 0) for i := 0; i < n; i++ { if a[i] == 1 { ldi[1] = 1 continue } for j := 1; j*j <= a[i]; j++ { if a[i]%j == 0 { ldi[a[i]] = max(ldi[a[i]], ldi[j]+1) if j != 1 { ldi[a[i]] = max(ldi[a[i]], ldi[a[i]/j]+1) } } } // fmt.Println(ldi) } ans := 0 for _, e := range ldi { ans = max(ans, e) } fmt.Println(ans) // fmt.Println(ldi) } func min(a ...int) int { res := a[0] for i := 1; i < len(a); i++ { if res > a[i] { res = a[i] } } return res } func max(a ...int) int { res := a[0] for i := 1; i < len(a); i++ { if res < a[i] { res = a[i] } } return res }