import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
    
        Scanner sc = new Scanner(System.in);
        Integer n = Integer.parseInt(sc.next());
        Integer k = Integer.parseInt(sc.next());
        
        String num = Integer.toString(n, k);
        int result = num.length();
        
        System.out.println(result);
    }
} import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args) {
    
        Scanner sc = new Scanner(System.in);
        Integer n = Integer.parseInt(sc.next());
        Integer k = Integer.parseInt(sc.next());
        
        String num = Integer.toString(n, k);
        int result = num.length();
        
        System.out.println(result);
    }
} Main public static void main(String[] args) {
    
        Scanner sc = new Scanner(System.in);
        Integer n = Integer.parseInt(sc.next());
        Integer k = Integer.parseInt(sc.next());
        
        String num = Integer.toString(n, k);
        int result = num.length();
        
        System.out.println(result);
    } main {
    
        Scanner sc = new Scanner(System.in);
        Integer n = Integer.parseInt(sc.next());
        Integer k = Integer.parseInt(sc.next());
        
        String num = Integer.toString(n, k);
        int result = num.length();
        
        System.out.println(result);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) Integer n = Integer.parseInt(sc.next()); n Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc Integer k = Integer.parseInt(sc.next()); k Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc String num = Integer.toString(n, k); num Integer.toString(n, k) Integer.toString Integer n k int result = num.length(); result num.length() num.length num System.out.println(result) System.out.println System.out System System.out result String[] args args public class Main {
    public static void main(String[] args) {
    
        Scanner sc = new Scanner(System.in);
        Integer n = Integer.parseInt(sc.next());
        Integer k = Integer.parseInt(sc.next());
        
        String num = Integer.toString(n, k);
        int result = num.length();
        
        System.out.println(result);
    }
} public class Main {
    public static void main(String[] args) {
    
        Scanner sc = new Scanner(System.in);
        Integer n = Integer.parseInt(sc.next());
        Integer k = Integer.parseInt(sc.next());
        
        String num = Integer.toString(n, k);
        int result = num.length();
        
        System.out.println(result);
    }
} Main
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
    
        Scanner sc = new Scanner(System.in);
        Integer n = Integer.parseInt(sc.next());
        Integer k = Integer.parseInt(sc.next());
        
        String num = Integer.toString(n, k);
        int result = num.length();
        
        System.out.println(result);
    }
}
