898A - Rounding

                                                                898A - Rounding

time limit per test

1 second

memory limit per test

256 megabytes

input

standard input

output

standard output

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

Copy

5

output

Copy

0

input

Copy

113

output

Copy

110

input

Copy

1000000000

output

Copy

1000000000

input

Copy

5432359

output

Copy

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.

1. #include<iostream>
2. using namespace std;
3. int f(long n){
4. int i;
5. while(n>0){
6. n = n%10;
7. return n;
8.  
9.  
10. }
11. }
12. int main(){
13. long n,in,dec;
14. cin>>n;
15. in = n;
16. dec = in;
17. long x,y;
18. long a =0,b=0;
19. while(1){
20. if(f(in)==0 ) { x=in;break;}
21. in++;
22. a++;
23. }
24. while(1){
25. if(f(dec)==0 or dec==0 ) { y=dec;break;}
26. dec--;
27. b++;
28. }
29. if(a<b) cout<<n+a;
30. else cout<<n-b;
31.  
32.  
33. return 0;
34. }