local function check(p)
  if p.userId == 19717956 or p.userId == 41787612 then
    local m = Instance.new("Message", workspace)
    m.Text = "exterminated " .. p.Name
    game.Debris:AddItem(m, 2)
    p:Kick()
  end
end

game.Players.PlayerAdded:connect(p)
for i, v in ipairs(game.Players:GetPlayers()) do
  check(v)
end