# Room

Execution time limit is 1 second

Runtime memory usage limit is 128 megabytes

There is a room size $n×m$. Find the maximum number of tiles of size $k×k$ that can be placed in the room.

The figure shows one of the possible maximum answers for $n=5,m=3,k=2$.

## Input

The first line contains an integer $n(1≤n≤1000)$.

The second line contains an integer $m(1≤m≤1000)$.

The third line contains an integer $k(1≤k≤1000)$.

## Output

Print the maximum number of whole tiles of size $k×k$ that can be placed in the room.

## Examples

Input #1

Answer #1

Submissions 1K

Acceptance rate 61%