Type the program's output

stop $=$ int$($input$())$

result $=0$

for a in range$(5)$:

print$($a $+1,$ end$=\text{'}$: $\text{'})$

for b in range$(4)$:

result $+=$ a $+1$

if result $>$ stop:

print$(\text{'}\_\text{'},$ end$=\text{'}\text{'})$

continue

print$($result$,$ end$=\text{'}\text{'})$

print$()$

Input

$18$

Output