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.

瓦西娅有一个非负整数 $n$。他想将 $n$ 四舍五入到最接近的、末位为 $0$ 的整数。如果 $n$ 本身末位已经是 $0$，则瓦西娅认为它已经完成了四舍五入。

例如，若 $n = 4722$，答案为 $4720$；若 $n = 5$，瓦西娅可以将其四舍五入为 $0$ 或 $10$，两种方式均正确。

给定 $n$，请找出瓦西娅将把它四舍五入到哪一个整数。

The first line contains single integer n (0 ≤ n ≤ 109) — number that Vasya has.

第一行包含一个整数 $n$（$0 \leq n \leq 10^9$）——即瓦夏所拥有的数字。

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

输出对 n 四舍五入后的结果。注意，在某些情况下答案并不唯一；此时输出任意一个正确答案即可。

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.

在第一个例子中，$ n = 5 $。最接近且以 0 结尾的整数是 0 和 10。这两个答案均正确，因此你可以输出 0 或 10。