import java.util.*;

public class Main {
    public static void main(String[] args){
        
        Scanner scanner = new Scanner(System.in);
        double H = scanner.nextDouble();
        double A = scanner.nextDouble();
        long S = (long)Math.ceil(H/A);
        
        System.out.println(S);
    }
}

/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