import java.util.Scanner;

public class Main {

    public static void main(String[] args) throws Exception {
        try (Scanner sc = new Scanner(System.in)) {
            int N = sc.nextInt();
            int K = sc.nextInt();

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

            System.out.println(ans);
        }
    }

} import java.util.Scanner; Scanner java.util public class Main {

    public static void main(String[] args) throws Exception {
        try (Scanner sc = new Scanner(System.in)) {
            int N = sc.nextInt();
            int K = sc.nextInt();

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

            System.out.println(ans);
        }
    }

} Main public static void main(String[] args) throws Exception {
        try (Scanner sc = new Scanner(System.in)) {
            int N = sc.nextInt();
            int K = sc.nextInt();

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

            System.out.println(ans);
        }
    } main {
        try (Scanner sc = new Scanner(System.in)) {
            int N = sc.nextInt();
            int K = sc.nextInt();

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

            System.out.println(ans);
        }
    } try (Scanner sc = new Scanner(System.in)) {
            int N = sc.nextInt();
            int K = sc.nextInt();

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

            System.out.println(ans);
        } {
            int N = sc.nextInt();
            int K = sc.nextInt();

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

            System.out.println(ans);
        } Scanner sc = new Scanner(System.in) Scanner sc = new Scanner(System.in) 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 = 0; ans 0 while (N > 0) {
                N /= K;
                ans++;
            } N > 0 N 0 {
                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 public class Main {

    public static void main(String[] args) throws Exception {
        try (Scanner sc = new Scanner(System.in)) {
            int N = sc.nextInt();
            int K = sc.nextInt();

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

            System.out.println(ans);
        }
    }

} public class Main {

    public static void main(String[] args) throws Exception {
        try (Scanner sc = new Scanner(System.in)) {
            int N = sc.nextInt();
            int K = sc.nextInt();

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

            System.out.println(ans);
        }
    }

} Main
import java.util.Scanner;

public class Main {

    public static void main(String[] args) throws Exception {
        try (Scanner sc = new Scanner(System.in)) {
            int N = sc.nextInt();
            int K = sc.nextInt();

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

            System.out.println(ans);
        }
    }

}
