const LIMIT: usize = 300000usize;

fn main() {
    let mut n = String::new();
    std::io::stdin().read_line(&mut n).ok();
    let n: usize = n.trim().parse().unwrap();
    let mut a = String::new();
    std::io::stdin().read_line(&mut a).ok();
    let a: Vec<usize> = a.trim().split_whitespace().map(|s| s.parse().unwrap()).collect();

    let mut dp = vec![0usize; LIMIT+1];
    dp[a[0]] = 1;
    for &v in a.iter().skip(1) {
        for j in 1..=(v as f64).sqrt() as usize {
            if v % j == 0 {
                if v == 1 {
                    dp[v] = 1;
                } else {
                    dp[v] = dp[v].max(dp[j] + 1);
                }
                if j > 1 {
                    dp[v] = dp[v].max(dp[v / j] + 1);
                }
            }
        }
    }
    println!("{}", dp.iter().max().unwrap());
}