import java.util.LinkedList;
import java.util.List;
import java.util.Scanner;

public class Main{
	public static void main(String[] args) {

		Scanner scanner = new Scanner(System.in);

		String[] tmp = scanner.nextLine().split(" ");
		int n = Integer.parseInt(tmp[0]);
		int k = Integer.parseInt(tmp[1]);
		List<Character> list = new LinkedList<Character>();

		while(n > 0) {

			list.add((char) (n % k));
			n /= k;

		}



		System.out.println(list.size());

	}
}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz