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.

Input

The first line contains single integer $*n*$ ($0 ≤ *n* ≤ 10^{9}$) — number that Vasya has.

Output

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

Note

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 $10$.