--Sorry everyone 
--I accidentally posted anonymously a little while ago, 
--so I'm reposting from this account now. Rest assured, 
--I definitely didn't rip it off or anything.
local day = 0
while true do
    local input = io.read()
    if input then
        input = input:lower()
    else
        print("write `nextday`")
        break
    end
    if input == "nextday" then
        day = day + 1
        print("day " .. day)
    else
        print("write `nextday`")
        break
    end
    if day == 2 then 
        print("last day")
    end
    if day == 3 then
        print("game over")
        break
    end
end