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

public class Main {
	public static void main (String[] args) {
		Scanner sc = new Scanner(System.in);
//------------------------------------------------------------
		int n = sc.nextInt();
		int k = sc.nextInt();
		int[] monsters =new int[n];
		for (int i=0;i<n;i++){
			monsters[i]=sc.nextInt();
		}
		Arrays.sort(monsters);

		long hp =0;
		if (k>=n) {
			System.out.println(hp);
		} else{
			for (int j=0;j<n-k;j++) {
				hp += monsters[j];
			}
			System.out.println(hp);

		}



		//------------------------------------------------------------
	}
}
/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