import java.util.*;
public class Main {
	public static void main (String[] args) {
      Scanner sc = new Scanner(System.in);
      int N = sc.nextInt(), K = sc.nextInt();
      ArrayList<Integer> list = new ArrayList<>();
      for (int i=0; i<N; i++) {
        list.add(sc.nextInt());
      }
      Collections.sort(list);
      int ans = 0;
      for (int j=0; j<K; j++) {
        ans += list.get(j);
      }
      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