import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        // Your code here!
        Scanner sc = new Scanner(System.in);
        int num = sc.nextInt();
        int k = sc.nextInt();
        int ans = 0;
        while(num>0){
            num = num / k;
            ans++;
        }
        
        System.out.println(ans);
    }
} import java.util.*; util.* java public class Main {
    public static void main(String[] args) throws Exception {
        // Your code here!
        Scanner sc = new Scanner(System.in);
        int num = sc.nextInt();
        int k = sc.nextInt();
        int ans = 0;
        while(num>0){
            num = num / k;
            ans++;
        }
        
        System.out.println(ans);
    }
} Main public static void main(String[] args) throws Exception {
        // Your code here!
        Scanner sc = new Scanner(System.in);
        int num = sc.nextInt();
        int k = sc.nextInt();
        int ans = 0;
        while(num>0){
            num = num / k;
            ans++;
        }
        
        System.out.println(ans);
    } main {
        // Your code here!
        Scanner sc = new Scanner(System.in);
        int num = sc.nextInt();
        int k = sc.nextInt();
        int ans = 0;
        while(num>0){
            num = num / k;
            ans++;
        }
        
        System.out.println(ans);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int num = sc.nextInt(); num sc.nextInt() sc.nextInt sc int k = sc.nextInt(); k sc.nextInt() sc.nextInt sc int ans = 0; ans 0 while(num>0){
            num = num / k;
            ans++;
        } num>0 num 0 {
            num = num / k;
            ans++;
        } num = num / k num num / k num k ans++ ans System.out.println(ans) System.out.println System.out System System.out ans String[] args args public class Main {
    public static void main(String[] args) throws Exception {
        // Your code here!
        Scanner sc = new Scanner(System.in);
        int num = sc.nextInt();
        int k = sc.nextInt();
        int ans = 0;
        while(num>0){
            num = num / k;
            ans++;
        }
        
        System.out.println(ans);
    }
} public class Main {
    public static void main(String[] args) throws Exception {
        // Your code here!
        Scanner sc = new Scanner(System.in);
        int num = sc.nextInt();
        int k = sc.nextInt();
        int ans = 0;
        while(num>0){
            num = num / k;
            ans++;
        }
        
        System.out.println(ans);
    }
} Main
import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        // Your code here!
        Scanner sc = new Scanner(System.in);
        int num = sc.nextInt();
        int k = sc.nextInt();
        int ans = 0;
        while(num>0){
            num = num / k;
            ans++;
        }
        
        System.out.println(ans);
    }
}