import java.util.*;

public class Main{
  public static void main(String...args){
    Scanner s = new Scanner(System.in);
    int n = s.nextInt(); int k = s.nextInt();
    int c = 1;
    while (n / k != 0){
      n/=k; c++;
    }
    System.out.println(c);
  }
}
      
/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