import java.util.Arrays;
import java.util.Scanner;

public class Main {
   public static void main(String[] args) {
       Scanner s = new Scanner(System.in);
       int size = s.nextInt();
       int k = s.nextInt();
       int elements[] = new int[size];
       for(int i=0;i<size;i++) {
           elements[i] = s.nextInt();
       }
       Arrays.sort(elements);
       long sum = 0;
       for(int i=0;i<k&&i<size;i++) {
           sum += elements[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