local mmi, mma = math.min, math.max
local mfl = math.floor
local n = io.read("*n")
local lim = 100000
local t = {}
for i = 1, lim do
  t[i] = 0
end
for i = 1, n do
  local a = io.read("*n")
  local val = 0
  for j = 1, 320 do
    if a < j * j then break end
    if a % j == 0 then
      val = mma(val, t[j])
      val = mma(val, t[mfl(a / j)])
    end
  end
  t[a] = mma(t[a], val + 1)
end
local ret = 0
for i = 1, lim do
  ret = mma(ret, t[i])
end
print(ret)