import java.util.Scanner;

class Main {
    public static void main(String[] args) {
	Scanner sc = new Scanner(System.in);

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

	int count = 0;
	do {
	    N = N / K;
	    count++;
	} while (N > 0);

	System.out.println(count);
    }
} import java.util.Scanner; Scanner java.util class Main {
    public static void main(String[] args) {
	Scanner sc = new Scanner(System.in);

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

	int count = 0;
	do {
	    N = N / K;
	    count++;
	} while (N > 0);

	System.out.println(count);
    }
} Main public static void main(String[] args) {
	Scanner sc = new Scanner(System.in);

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

	int count = 0;
	do {
	    N = N / K;
	    count++;
	} while (N > 0);

	System.out.println(count);
    } main {
	Scanner sc = new Scanner(System.in);

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

	int count = 0;
	do {
	    N = N / K;
	    count++;
	} while (N > 0);

	System.out.println(count);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int N N K; K N = sc.nextInt() N sc.nextInt() sc.nextInt sc K = sc.nextInt() K sc.nextInt() sc.nextInt sc int count = 0; count 0 do {
	    N = N / K;
	    count++;
	} while (N > 0); N > 0 N 0 {
	    N = N / K;
	    count++;
	} N = N / K N N / K N K count++ count System.out.println(count) System.out.println System.out System System.out count String[] args args
import java.util.Scanner;

class Main {
    public static void main(String[] args) {
	Scanner sc = new Scanner(System.in);

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

	int count = 0;
	do {
	    N = N / K;
	    count++;
	} while (N > 0);

	System.out.println(count);
    }
}