Room#11357
There is a room size n \times m. Find the maximum number of whole tiles of size k \times k that can be placed in the room.
The figure shows one of the possible maximum answers for n = 5, m = 3, k = 2.
The first line contains an integer n~(1 \le n \le 1000).
The second line contains an integer m~(1 \le m \le 1000).
The third line contains an integer k~(1 \le k \le 1000).
Print the maximum number of whole tiles of size k \times k that can be placed in the room.
Example 1