import java.io.*;
import java.util.*;

class Main
{
  public static void main (String[] arg)
  {
    Scanner scan = new Scanner(System.in);
    int n = Integer.parseInt(scan.next()); //整数
    int k = Integer.parseInt(scan.next()); //進数
    int d; //割られる数
    int count; //割った数
    
    d = n;
    
    if(d >= k){
      for(count = 0; (d / k) >= k; count ++){
        d = d / k;
      }
      count ++;
    }
    else{
      count = 0;
    }    
    System.out.println(count + 1);
    
  }
}
/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