import java.util.*;
public class Main {
    public static void main(final String[] args){
        final Scanner sc = new Scanner(System.in);
        
        int N = sc.nextInt();
        final int K = sc.nextInt();
        sc.close();

        int cnt = 1;
        while (N >= K) {
            N /= K;
            cnt++;
        }

        System.out.println(cnt);
    }
}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz