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


public class Main {

	public static void main(String[] args) {
		// TODO 自動生成されたメソッド・スタブ
		Scanner scanner = new Scanner(System.in);
		int N = scanner.nextInt();
		int K = scanner.nextInt();
		ArrayList<Integer> prices = new ArrayList<>();
		int total = 0;

		for (int i = 0; i < N; i++) {
			int p = scanner.nextInt();
			prices.add(p);
		}

		Collections.sort(prices);

		for (int j = 0; j < K; j++) {
			int price = prices.get(j);
			total += price;
		}

		System.out.println(total);
	}

}
/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