Description

You bought a box of $n$ apples, but unfortunately, a worm got into the box. The worm eats one apple every $x$ hours, and it won't eat another apple until it finishes the current one. After $y$ hours, how many complete apples do you have left?

Input Format

A single line containing three integers $n$, $x$, and $y$.

Output Format

A single line containing the number of remaining complete apples.

Sample

10 4 9

7