# Compact discs

Easy

Execution time limit is 1 second

Runtime memory usage limit is 128 megabytes

Blank compact discs are available in three different package options:

A package of 100 discs for 100 UAH

A package of 20 discs for 30 UAH

A single disc for 2 UAH

Your goal is to buy at least $n$ discs using the minimum amount of money possible.

## Input

The input consists of a single integer $n$ $(1≤n≤1000)$, representing the number of discs you want to buy.

## Output

Print the minimum amount of money needed to buy at least $n$ discs.

## Examples

Input #1

Answer #1

Submissions 30K

Acceptance rate 21%