def main():
    import sys
    input = sys.stdin.readline

    N = int(input())
    A = list(map(int, input().split()))

    dp = [[A[0]]]
    for a in A[1:]:
        ok = -1
        ng = len(dp)
        mid = (ok+ng)//2
        while ng - ok > 1:
            flg = 0
            for b in dp[mid]:
                if a%b == 0 and a > b:
                    #print(a, b, mid)
                    flg = 1
                    break
            if flg:
                #print(a, mid)
                ok = mid
            else:
                ng = mid
            mid = (ok+ng)//2
        if ok == len(dp)-1:
            dp.append([a])
        else:
            dp[ok+1].append(a)
    print(len(dp))
    #print(dp)


if __name__ == '__main__':
    main()