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A. Rounding

time limit per test

1 secondmemory limit per test

256 megabytesinput

standard inputoutput

standard outputVasya 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.

Examples

Input

5

Output

0

Input

113

Output

110

Input

1000000000

Output

1000000000

Input

5432359

Output

5432360

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.

Codeforces (c) Copyright 2010-2018 Mike Mirzayanov

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