Minimum Cameras

You are given two integers N and K, where N represents the number of doors and K represents the number of consecutive doors that one camera can monitor. The task is to determine the minimum number of cameras required to monitor all N doors.

This can be mathematically expressed using the ceiling function as follows:

$$\lceil \frac{N}{K} \rceil$$

For example, if N = 10 and K = 3, the answer is 4 since 3 cameras can cover 9 doors and one additional camera is needed for the last door.

inputFormat

The input is read from standard input (stdin) and contains two space-separated integers: N and K.

outputFormat

Output the minimum number of cameras required to monitor all doors to standard output (stdout).

10 3

4