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