10858: ABC156 - B - Digits
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Description
Given is an integer $N$. Find the number of digits that $N$ has in base $K$.
Notes
For information on base-K representation, see Positional notation - Wikipedia.
Input
Input is given from Standard Input in the following format:
```
$N$ $K$
```
```
$N$ $K$
```
Output
Print the number of digits that $N$ has in base $K$.
Constraints
- All values in input are integers.
- $1 \leq N \leq 10^9$
- $2 \leq K \leq 10$
- $1 \leq N \leq 10^9$
- $2 \leq K \leq 10$
Sample 1 Input
11 2
Sample 1 Output
4
In binary, $11$ is represented as 1011.
Sample 2 Input
1010101 10
Sample 2 Output
7
Sample 3 Input
314159265 3
Sample 3 Output
18