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 a[] = new int[n];
      
      for (int i = 0; i < n; i++) {
         a[i] = sc.nextInt();
      }
      
      Arrays.sort(a);
      
      int ans = 0;
      
      for (int j = 0; j < k; j++) {
         int x = a[j];
         ans += x;
      }
      
      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