import java.util.Arrays;
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {

		Scanner scan = new Scanner(System.in);

		int monster = scan.nextInt();
		int waza = scan.nextInt();
		long[] hp = new long[monster];

		for(int i=0;i<monster;i++) {

			hp[i] = scan.nextInt();
		}

		long sum = 0;

		Arrays.sort(hp);

		for(int i=0;i<monster-waza;i++) {

			sum += hp[i];
		}

		   System.out.println(sum);

		scan.close();
	}

}

/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