import java.io.FileNotFoundException;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) throws FileNotFoundException {

//    	File file = new File("src/in.txt");

        //コード
//    	Scanner sc = new Scanner(file);
    	Scanner sc = new Scanner(System.in);

    	int N = sc.nextInt();
    	int K = sc.nextInt();

    	int q = K;
    	int count = 1;

    	while(q<=N) {
    		q *=K;
    		count++;
    	}
    	System.out.println(count);

    }

} import java.io.FileNotFoundException; FileNotFoundException java.io import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args) throws FileNotFoundException {

//    	File file = new File("src/in.txt");

        //コード
//    	Scanner sc = new Scanner(file);
    	Scanner sc = new Scanner(System.in);

    	int N = sc.nextInt();
    	int K = sc.nextInt();

    	int q = K;
    	int count = 1;

    	while(q<=N) {
    		q *=K;
    		count++;
    	}
    	System.out.println(count);

    }

} Main public static void main(String[] args) throws FileNotFoundException {

//    	File file = new File("src/in.txt");

        //コード
//    	Scanner sc = new Scanner(file);
    	Scanner sc = new Scanner(System.in);

    	int N = sc.nextInt();
    	int K = sc.nextInt();

    	int q = K;
    	int count = 1;

    	while(q<=N) {
    		q *=K;
    		count++;
    	}
    	System.out.println(count);

    } main {

//    	File file = new File("src/in.txt");

        //コード
//    	Scanner sc = new Scanner(file);
    	Scanner sc = new Scanner(System.in);

    	int N = sc.nextInt();
    	int K = sc.nextInt();

    	int q = K;
    	int count = 1;

    	while(q<=N) {
    		q *=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 q = K; q K int count = 1; count 1 while(q<=N) {
    		q *=K;
    		count++;
    	} q<=N q N {
    		q *=K;
    		count++;
    	} q *=K q 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) throws FileNotFoundException {

//    	File file = new File("src/in.txt");

        //コード
//    	Scanner sc = new Scanner(file);
    	Scanner sc = new Scanner(System.in);

    	int N = sc.nextInt();
    	int K = sc.nextInt();

    	int q = K;
    	int count = 1;

    	while(q<=N) {
    		q *=K;
    		count++;
    	}
    	System.out.println(count);

    }

} public class Main {
    public static void main(String[] args) throws FileNotFoundException {

//    	File file = new File("src/in.txt");

        //コード
//    	Scanner sc = new Scanner(file);
    	Scanner sc = new Scanner(System.in);

    	int N = sc.nextInt();
    	int K = sc.nextInt();

    	int q = K;
    	int count = 1;

    	while(q<=N) {
    		q *=K;
    		count++;
    	}
    	System.out.println(count);

    }

} Main
import java.io.FileNotFoundException;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) throws FileNotFoundException {

//    	File file = new File("src/in.txt");

        //コード
//    	Scanner sc = new Scanner(file);
    	Scanner sc = new Scanner(System.in);

    	int N = sc.nextInt();
    	int K = sc.nextInt();

    	int q = K;
    	int count = 1;

    	while(q<=N) {
    		q *=K;
    		count++;
    	}
    	System.out.println(count);

    }

}