import java.util.*; 

class Main{
public static void main(String[] args){
	Scanner sc=new Scanner(System.in);
        int n=sc.nextInt();
        int k=sc.nextInt();
  		long ans=0;

  		long[] h=new long[n];
		for(int c=0;c<n;c++){
    		h[c]=sc.nextInt();
          	ans+=h[c];
    	}
  		Arrays.sort(h);
  		int c=n-1;
  if(n<=k){
  		ans=0;
  }else{
     while(k>0){
  		ans-=h[c];
       c--;
     k--;
   }
  }		
    	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