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[] fruits = new int[n];
      for(int i=0;i<n;i++){
        fruits[i] = sc.nextInt();
      }
      Arrays.sort(fruits);
      int sum=0;
      for(int i=0;i<k;i++){
        sum+=fruits[i];
      }
        System.out.println(sum);
    }
}
