import java.util.*;
class Main{
  public static void main(String[] args){
    Scanner in=new Scanner(System.in);
    int n=in.nextInt();
    int k=in.nextInt();
    ArrayList<Integer> arr=new ArrayList<Integer>(n);
    for(int i=0;i<n;i++)
      arr.add(in.nextInt());
    Collections.sort(arr);
    int ans=0;
    for(int i=0;i<k;i++)
      ans+=arr.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