import java.util.Scanner;
public class Main {
    public static void main(String args[]) {
        Scanner s = new Scanner(System.in);
        int n = Integer.parseInt(s.next());
        int k = Integer.parseInt(s.next());

        int count = 1;


        for(int i=1;i<n;){
            i = i * k;

            if(n/i >= 1){
            count++;

            }
        }

        System.out.println(count);

        
        }

}

/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