import sys # sys.setrecursionlimit(200005) int1 = lambda x: int(x)-1 pDB = lambda *x: print(*x, end="\n", file=sys.stderr) p2D = lambda x: print(*x, sep="\n", end="\n\n", file=sys.stderr) def II(): return int(sys.stdin.readline()) def LI(): return list(map(int, sys.stdin.readline().split())) def LLI(rows_number): return [LI() for _ in range(rows_number)] def LI1(): return list(map(int1, sys.stdin.readline().split())) def LLI1(rows_number): return [LI1() for _ in range(rows_number)] def SI(): return sys.stdin.readline().rstrip() # dij = [(0, 1), (-1, 0), (0, -1), (1, 0)] dij = [(0, 1), (-1, 0), (0, -1), (1, 0), (1, 1), (1, -1), (-1, 1), (-1, -1)] inf = (1 << 63)-1 # inf = (1 << 31)-1 # md = 10**9+7 md = 998244353 mx = 10**5 n = II() aa = LI() border = round(mx**0.5) # border=3 dp = [0]*100005 seen=set() ans = 1 for a in aa: for b in range(1, min(a+1, border))[::-1]: if a%b: continue dp[a] = max(dp[a], dp[b]+1) # pDB(a,dp[a]) ans = max(ans, dp[a]) if a >= border: dp[a]+=1 for b in range(a, 100001, a): dp[b] = max(dp[b], dp[a]) # pDB(dp[:40]) print(ans)