217 - The national flag of Bangladesh

The national flag of Bangladesh

Time Limit: 1 sec


The Problem

The national flag of Bangladesh is bottle green in color and rectangular in size with the length (L) to width(W) ratio of 10:6. It bears a red circle on the background of green. If the lenght is can you find the width (W).


The color in the background represents the greenery of Bangladesh while the red circle symbolizes the rising sun and the sacrifice of lives in our freedom fight.



if L = 10 then W = 6



The Input

The input file contains only one integer numbers L , which is the length of the flag (L<=1500).


The Output

Output will show the one integer number which is the width(W) of the flag in a separate line.


Sample Input



Sample Output






Problem Setter: Shahin ShamS