import java.util.*;
public class Main {
	public static void main(String[] args){
      	
		Scanner sc = new Scanner(System.in);
		//String word_before = sc.next();
		
		int N = sc.nextInt();
		int K = sc.nextInt();
		int cnt = 0;
		while (N/K!=0) {
			N=	N/K;
			cnt++;
		}
		
		System.out.println(cnt+1);
      	sc.close();
    }
		
		
}
/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