import java.math.*;
import 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 ans = 1;
        while(n>=k){
            n /= k;
            ans ++;
        }
        System.out.println(ans);
    }
} import java.math.*; math.* java import java.util.*; util.* java class Main{
    public static void main(String[] args){
        Scanner sc=new Scanner(System.in);
        int n = sc.nextInt();
        int k = sc.nextInt();
        int ans = 1;
        while(n>=k){
            n /= k;
            ans ++;
        }
        System.out.println(ans);
    }
} Main public static void main(String[] args){
        Scanner sc=new Scanner(System.in);
        int n = sc.nextInt();
        int k = sc.nextInt();
        int ans = 1;
        while(n>=k){
            n /= k;
            ans ++;
        }
        System.out.println(ans);
    } main {
        Scanner sc=new Scanner(System.in);
        int n = sc.nextInt();
        int k = sc.nextInt();
        int ans = 1;
        while(n>=k){
            n /= k;
            ans ++;
        }
        System.out.println(ans);
    } 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 ans = 1; ans 1 while(n>=k){
            n /= k;
            ans ++;
        } n>=k n k {
            n /= k;
            ans ++;
        } n /= k n k ans ++ ans System.out.println(ans) System.out.println System.out System System.out ans String[] args args
import java.math.*;
import 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 ans = 1;
        while(n>=k){
            n /= k;
            ans ++;
        }
        System.out.println(ans);
    }
}
