import java.util.*;
class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		
		int n = sc.nextInt();
		Long[] mns = new Long[n];
		int k = sc.nextInt();
		Long ans = 0l;

		for(int i=0;i<n;i++){
			mns[i] = sc.nextLong();
		}

		Arrays.sort(mns);

		for(int m=0;m<n-k;m++){
			ans += mns[m];
		}

		System.out.println(ans);

		}
	}
/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