import java.util.*;
public class Main { 
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
		int n = Integer.parseInt(sc.next());
        int k = Integer.parseInt(sc.next());
        if(k >= n) {
        	System.out.println(0);
          	return;
        }
        int[] arr = new int[n];
        for(int i = 0; i < n; i++) {
        	arr[i] = sc.nextInt();
        }
        Arrays.sort(arr);
        long sum = 0;
      	for(int i = 0; i < (n - k); i++)
          sum += arr[i];
        System.out.println(sum);
    }
}
/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