import sys
import math

def get_divisors(x):
    if x == 1:
        return []
    divisors = set()
    x_sqrt = math.isqrt(x)
    i = 1
    while i <= x_sqrt:
        if x % i == 0:
            if i < x:
                divisors.add(i)
            j = x // i
            if j < x and j != i:
                divisors.add(j)
        i += 1
    return divisors

def main():
    input = sys.stdin.read().split()
    n = int(input[0])
    A = list(map(int, input[1:n+1]))
    dp = dict()
    max_val = 0
    for x in A:
        divisors = get_divisors(x)
        current_max = 0
        for y in divisors:
            if y in dp and dp[y] > current_max:
                current_max = dp[y]
        new_val = current_max + 1
        if x in dp:
            if new_val > dp[x]:
                dp[x] = new_val
        else:
            dp[x] = new_val
        if dp[x] > max_val:
            max_val = dp[x]
    print(max_val)

if __name__ == '__main__':
    main()