import sys

int1 = lambda x: int(x) - 1

# input = lambda: sys.stdin.buffer.readline()
input = lambda: sys.stdin.readline().rstrip()
ii = lambda: int(input())
i1 = lambda: int1(input())
mi = lambda: map(int, input().split())
mi1 = lambda: map(int1, input().split())
li = lambda: list(mi())
li1 = lambda: list(mi1())
lli = lambda n: [li() for _ in range(n)]

INF = float("inf")
# mod = int(1e9 + 7)
mod = 998244353

n = ii()
m = 100010
dp = [-INF] * m
dp[0] = 0
divs = [[0] for i in range(m)]
for i in range(1, m):
    for j in range(i, m, i):
        divs[j].append(i)
for a in li():
    ma = -INF
    for d in divs[a]:
        if ma < dp[d]:
            ma = dp[d]
    if dp[a] < ma + 1:
        dp[a] = ma + 1
print(max(dp))