import java.util.ArrayList;
import java.util.Collections;
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);

		int n = sc.nextInt();
		int k = sc.nextInt();
		ArrayList<Integer> list = new ArrayList<>();

		for (int i = 0; i < n; i++) {
			int p = sc.nextInt();
			list.add(p);
		}

		Collections.sort(list);

		int sum = 0;
		for (int i = 0; i < k; i++) {
			sum += list.get(i);
		}

		System.out.println(sum);

		sc.close();
	}
}
/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