import java.util.Scanner;
import java.util.List;
import java.util.ArrayList;
 
public class Main {
  public static void main(String[] args){
    Scanner scanner = new Scanner(System.in);
    int N = scanner.nextInt();
    int K = scanner.nextInt();
    List<Integer> list = new ArrayList<>();
    if(N < K){
      list.add(N);
    }else{
      while(N >= K){
        list.add(N % K);
        N = N / K;
      }
      if(N != 0)list.add(N);
    }
    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