import java.util.*;
class Main
{
    public static void main(String arg[])
    {
        int count=0,s,n1;
        Scanner sc = new Scanner(System.in);
        try {
            int n = sc.nextInt();
            int b= sc.nextInt();
            if(b>0&&b<=10)
            {
                while(n>0)
                {
                    s=n%b;
                    n=n/b;
                    count++;
                }
            }
        } catch(Exception e) {
        } 
        System.out.println(count);
    }
}
/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