import java.util.*;
import java.lang.*;
import java.io.*;

class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringTokenizer st = new StringTokenizer(br.readLine());
        int N = Integer.parseInt(st.nextToken());
        int K = Integer.parseInt(st.nextToken());
        long[] arr = new long[300001];

        st = new StringTokenizer(br.readLine());
        long total = 0;
        for (int i=0; i<N; i++) {
            int a = Integer.parseInt(st.nextToken());
            arr[a] += a;
            total += a;
        }
        
        
    
        PriorityQueue<Long> pq = new PriorityQueue<>(Collections.reverseOrder());
        

        for (int i=1; i<300001; i++) {
            pq.add(arr[i]);
        }

        for (int i=0; i<K; i++) {
            long big_num = pq.poll();
            total -= big_num;
        }

        System.out.println(total);
        

            
            
            
    

        

        

        
    }
}