import java.util.*;
public class Main {
    public static void main(String[] args){

	  Scanner sc = new Scanner(System.in);
	  int N = sc.nextInt();
      int K = sc.nextInt();
      int p[] = new int[N];

      for(int i=0;i<N;i++){
        p[i] = sc.nextInt();
      }
      Arrays.sort(p);
      int total = 0;
      for(int j=0;j<K;j++){
      	total = total + p[j];
      }
      System.out.println(total);

    }
}
/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