import java.util.Scanner;
import java.util.List;
import java.util.ArrayList;
import java.util.Collections;

class Main {
    
    public static void main(String[] args){
        Scanner scanner = new Scanner(System.in);
        int n = scanner.nextInt();
        int k = scanner.nextInt();
        List<Long> list = new ArrayList<>();
        for(int i=0; i<n; i++){
            list.add(scanner.nextLong());
        }
        scanner.close();
        Collections.sort(list);
        long sum = 0;
        for(int i=list.size()-1; i>=0; i--){
            if(i>list.size()-1-k){
                continue;
            }
            sum += list.get(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