Previous number 2 (Megoldási útmutató)

There are two cases :

• $n$ is a multiple of $5$ , then we print $n-5$

• otherwise , we remove the reminder part (i.e. we go down to nearest multiple of $5$) , Formally

  $$n-n(\mathrm{mod}5)$$

n=int(input())
if(n%5==0):
    print(n-5)
else:
    print(n-n%5)