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=0;
    while(N!=0){
      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=0;
    while(N!=0){
      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=0;
    while(N!=0){
      N/=K;
      count++;
    }    
      System.out.println(count);
  } main {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    int K = sc.nextInt();
    int count=0;
    while(N!=0){
      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=0; count 0 while(N!=0){
      N/=K;
      count++;
    } N!=0 N 0 {
      N/=K;
      count++;
    } 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=0;
    while(N!=0){
      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=0;
    while(N!=0){
      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=0;
    while(N!=0){
      N/=K;
      count++;
    }    
      System.out.println(count);
  }
}