ccCountdown

while not rs.getInput("bottom") do

end

local start = 20
term.setBackgroundColor(colors.white)
term.setTextColor(colors.cyan)

local i = start;
while i > 0
    if i >= 10 then
        term.clear()
        term.setCursorPos(1,1)
        if i == 10 then term.setTextColor(colors.red) end
        print i
        sleep(1)
    elseif i > 5 then
        term.clear()
        term.setCursorPos(1,1)
        term.setTextColor(colors.red)
        print "0" .. i
        sleep(1)
    else
        term.setBackgroundColor(colors.red)
        term.clear()
        term.setCursorPos(1,1)
        term.setTextColor(colors.white)
        print "0" .. i
        sleep(0.5)
        term.setBackgroundColor(colors.white)
        term.clear()
        term.setCursorPos(1,1)
        term.setTextColor(colors.red)
        print "0" .. i
        sleep(0.5)
    end
end

term.clear()
term.setCursorPos(1,1)
print "00"