import java.util.*;

public class Main{
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int k = sc.nextInt();
        List<Long> list = new ArrayList<>();
        long ans = 0;
        for(int i = 0;i<n;i++){
            long num = sc.nextLong();
            list.add(num);
            ans += num;
        }
        Collections.sort(list);
        Collections.reverse(list);
        if(k > n){
            k = n;
        }
        for(int i = 0;i<k;i++){
            ans -= list.get(i);
        }
        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