import java.util.*;

public class Main
{
	public static void main(String args[])
	{
		int a,d=0;
		Scanner sc=new Scanner(System.in);
		a=sc.nextInt();
		int c=sc.nextInt();
		for(int i=0;i<a;i++)
		{
			int b=a-(i*c);
			if(b<=0)
			{
				System.out.println(i);
				System.exit(0);
			}
			else
			{
				d++;
			}
			
			
		}
		System.out.println(d);
	
	}
}
/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