use std::cmp::max;

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

    let maxval = x[n-1];
    let mut dp: Vec<usize> = vec![0; maxval + 1];
    for &v in x.iter() {
        dp[v] += 1;
        for i in 2..=maxval/v {
            dp[v*i] = max(dp[v], dp[v*i]);
        }
    }
    let result = dp.iter().max().unwrap();
    println!("{}", result);
}