import java.util.*;

class Main
{
  public static void main(String [] args)
  {
    Scanner s = new Scanner(System.in);
    int n = s.nextInt();
    int k = s.nextInt();
    int [] arr = new int [n];
    
    for(int i = 0; i < n;i++)
      	arr[i] = s.nextInt();
    
    Arrays.sort(arr);
    
    int ans = 0;
    
    for(int i = 0; i < k; i++)
      ans += arr[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