Rounding

Time limit2sMemory limit128 MB

Summary

Given an integer up to 99,999,999, repeatedly round its digits at increasing place values (tens, hundreds, etc.) using standard rounding rules and print the final result.

Level: Easy3 of 10
Topics: Math, Implementation, Simulation
Solved: No attempts yet

Problem

You are given an integer N. If the current value is greater than 10, round the ones digit to make it a multiple of 10. If the result is greater than 100, round the tens digit to make it a multiple of 100. Continue in the same way: whenever the current value is greater than the next threshold, round the digit immediately below that threshold.

When rounding a digit, values 5 or greater round up, and values 4 or less round down. Print the value after no more rounding steps are required.

Input

The first line contains an integer N.

0 <= N <= 99,999,999

Output

Print the value after applying the full rounding process.

Examples2

Example 1
Input
```
15
```
Expected output
```
20
```
Example 2
Input
```
446
```
Expected output
```
500
```