import java.util.Scanner;

class Main{
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int K = sc.nextInt();
		int count = 0;
		while(N > 0){
			N = N/K;
			count++;
		}
		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 = sc.nextInt();
		int K = sc.nextInt();
		int count = 0;
		while(N > 0){
			N = N/K;
			count++;
		}
		System.out.println(count);
	}
} Main public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int K = sc.nextInt();
		int count = 0;
		while(N > 0){
			N = N/K;
			count++;
		}
		System.out.println(count);
	} main {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int K = sc.nextInt();
		int count = 0;
		while(N > 0){
			N = N/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 count = 0; count 0 while(N > 0){
			N = N/K;
			count++;
		} 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 = sc.nextInt();
		int K = sc.nextInt();
		int count = 0;
		while(N > 0){
			N = N/K;
			count++;
		}
		System.out.println(count);
	}
}