import math
import sys

def main():
    input = sys.stdin.read().split()
    N = int(input[0])
    A = list(map(int, input[1:N+1]))
    
    max_a = 3 * 10**5
    max_dp = [0] * (max_a + 2)  # To handle values up to 3e5
    global_max = 0
    
    for x in A:
        divisors = set()
        if x != 1:
            sqrt_x = int(math.sqrt(x))
            for i in range(1, sqrt_x + 1):
                if x % i == 0:
                    if i < x:
                        divisors.add(i)
                    j = x // i
                    if j != i and j < x:
                        divisors.add(j)
        
        current_max = 0
        for d in divisors:
            if max_dp[d] > current_max:
                current_max = max_dp[d]
        
        dp_i = current_max + 1
        if dp_i > max_dp[x]:
            max_dp[x] = dp_i
        
        if dp_i > global_max:
            global_max = dp_i
    
    print(global_max)

if __name__ == "__main__":
    main()