import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.NoSuchElementException;

public class Main {
    static FastScanner scan = new FastScanner();
    static PrintWriter out = new PrintWriter(System.out);

    public static void main(String[] args) {
        int N = scan.nextInt();
        int[] X = new int[N];
        for(int i=0; i<N; i++) {
            X[i] = scan.nextInt();
        }
        Arrays.sort(X);
        
        final int SIZE = X[N-1]+1;
        int[] dp = new int[SIZE];
        int ans = 1;
        
        for(int i : X) {
            dp[i] = 1; 
            ArrayList<Integer> divisor = getDivisor(i);
            for(int j : divisor) {
                if(dp[i] < dp[j]+1) {
                    dp[i] = dp[j]+1;
                    ans = Math.max(ans, dp[i]);
                }
            }
        }
        System.out.println(ans);
    }
    
    private static ArrayList<Integer> getDivisor(int n) {
        ArrayList<Integer> ret = new ArrayList<>();
        if(n==1) return ret;
        for(int i=1; i*i<=n; i++) {
            if(n % i == 0) {
                ret.add(i);
                if(i != 1 && i != n/i) ret.add(n/i);
            }
        }
        return ret;
    }

    static class FastScanner {
        private final InputStream in = System.in;
        private final byte[] buffer = new byte[1024];
        private int ptr = 0;
        private int buflen = 0;

        private boolean hasNextByte() {
            if (ptr < buflen) {
                return true;
            } else {
                ptr = 0;
                try {
                    buflen = in.read(buffer);
                } catch (IOException e) {
                    e.printStackTrace();
                }
                if (buflen <= 0) {
                    return false;
                }
            }
            return true;
        }

        private int readByte() {
            if (hasNextByte())
                return buffer[ptr++];
            else
                return -1;
        }

        private static boolean isPrintableChar(int c) {
            return 33 <= c && c <= 126;
        }

        private void skipUnprintable() {
            while (hasNextByte() && !isPrintableChar(buffer[ptr]))
                ptr++;
        }

        public boolean hasNext() {
            skipUnprintable();
            return hasNextByte();
        }

        public String next() {
            if (!hasNext())
                throw new NoSuchElementException();
            StringBuilder sb = new StringBuilder();
            int b = readByte();
            while (isPrintableChar(b)) {
                sb.appendCodePoint(b);
                b = readByte();
            }
            return sb.toString();
        }

        public int nextInt() {
            return (int) nextLong();
        }

        public long nextLong() {
            if (!hasNext())
                throw new NoSuchElementException();
            long n = 0;
            boolean minus = false;
            int b = readByte();
            if (b == '-') {
                minus = true;
                b = readByte();
            }
            if (b < '0' || '9' < b) {
                throw new NumberFormatException();
            }
            while (true) {
                if ('0' <= b && b <= '9') {
                    n *= 10;
                    n += b - '0';
                } else if (b == -1 || !isPrintableChar(b)) {
                    return minus ? -n : n;
                } else {
                    throw new NumberFormatException();
                }
                b = readByte();
            }
        }
    }
}