CF898A Rounding

Vasya has a non-negative integer $ n $ . He wants to round it to nearest integer, which ends up with $ 0 $ . If $ n $ already ends up with $ 0 $ , Vasya considers it already rounded. For example, if $ n=4722 $ answer is $ 4720 $ . If $ n=5 $ Vasya can round it to $ 0 $ or to $ 10 $ . Both ways are correct. For given $ n $ find out to which integer will Vasya round it.

The first line contains single integer $ n $ ( $ 0

Print result of rounding $ n $ . Pay attention that in some cases answer isn't unique. In that case print any correct answer.

In the first example $ n=5 $ . Nearest integers, that ends up with zero are $ 0 $ and $ 10 $ . Any of these answers is correct, so you can print $ 0 $ or $ 10 $ .