import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
        int b = sc.nextInt(); 
        int c = 0;
        while (a>0){a/=b; c++;}
		System.out.println(c);
	}
} import java.util.*; util.* java public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
        int b = sc.nextInt(); 
        int c = 0;
        while (a>0){a/=b; c++;}
		System.out.println(c);
	}
} Main public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
        int b = sc.nextInt(); 
        int c = 0;
        while (a>0){a/=b; c++;}
		System.out.println(c);
	} main {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
        int b = sc.nextInt(); 
        int c = 0;
        while (a>0){a/=b; c++;}
		System.out.println(c);
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int a = sc.nextInt(); a sc.nextInt() sc.nextInt sc int b = sc.nextInt(); b sc.nextInt() sc.nextInt sc int c = 0; c 0 while (a>0){a/=b; c++;} a>0 a 0 {a/=b; c++;} a/=b a b c++ c System.out.println(c) System.out.println System.out System System.out c String[] args args public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
        int b = sc.nextInt(); 
        int c = 0;
        while (a>0){a/=b; c++;}
		System.out.println(c);
	}
} public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
        int b = sc.nextInt(); 
        int c = 0;
        while (a>0){a/=b; c++;}
		System.out.println(c);
	}
} Main
import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
        int b = sc.nextInt(); 
        int c = 0;
        while (a>0){a/=b; c++;}
		System.out.println(c);
	}
}
