import java.util.*;
public class Main { 
    public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);
        int o=0;
        int n=sc.nextInt();
        int k=sc.nextInt();
      PriorityQueue<Integer> p=new PriorityQueue<>();
      	for(int i=0;i<n;i++){
    		p.offer(sc.nextInt());
		}
        for(int j=0;j<k;j++){
          	o+=p.poll();
    	}
      System.out.println(o);
    }
    
}
/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