    import java.util.*;
     
    public class Main {
    	public static void main(String[] args) {
            Scanner scan = new Scanner(System.in);
            String[] str = scan.nextLine().split(" ");
    		String value = Integer.toString(new Integer(str[0]),new Integer(str[1]));
    		System.out.println(value.length()); //output = 1e
        }
    }
/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