import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class Main {
    public static void main(String[] a) {
        Scanner scan = new Scanner(System.in);
        String[] t = scan.nextLine().split("\\s");
        int n = Integer.valueOf(t[0]);
        int r = Integer.valueOf(t[1]);
        int c = n / r;
      	int p = 1;
        while (c != 0) {
          	c = c / r;
          	p++;
        }
        System.out.print(p);
    }
}
/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