import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		// 整数の入力
        int a = sc.nextInt();
     	int b = sc.nextInt();
        int count = 0;
        
        while(true){
          if(a >= b){
          a = a / b;
          count += 1;
          }else{
            count+= 1;
            break;
          }
        }
		
        
          System.out.println(count);

    }
}
/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