Write a program that prints a countdown of the form:

$10$dots$9$dots$8$dots$7$dots$6$dots$5$dots$4$dots$3$dots$2$dots$1$dots$0$dots Liftoff

$n=$ int $($input $("$Enter a positive integer: $"))$

for $i$ in range $(n,-1,-1)$ :

print $("\%$d$..."\%$i$)$

print$("$Liftoff$")$

$n=$ int$($input$("$Enter a positive integer: $"))$

for $i$ in range $(n,0,-1)$ :

print$("\%$d$...""$

print$("$Liftoff$",$ end$="")$

$n=$ int$($input$("$Enter a positive integer: $"))$

for i in range $(n,-1,-1)$ :