Codeforces 898 A. 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.

Input

The first line contains single integer n (0 ≤ n ≤ 109) — 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

output

input

output

input

1000000000

output

1000000000

input

output

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.

代码：

 1 #include<iostream>
 2 #include<cstring>
 3 #include<cstdio>
 4 #include<cmath>
 5 #include<algorithm>
 6 using namespace std;
 7 typedef long long ll;
 8 int main(){
 9     ll n;
10     while(~scanf("%lld",&n)){
11     ll temp=n%10;
12     if(temp>5)n=n-temp+10;
13     else n=n-temp;
14     printf("%lld
",n);
15     }
16     return 0;