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> shoplist= new ArrayList<Integer>();

		for(int i=0;i<N;i++) {
			shoplist.add(sc.nextInt());
		}
		sc.close();
		Collections.sort(shoplist);

		int result = 0;
		for(int i=0;i<K;i++) {
			result = result + shoplist.get(i);
		}

		System.out.println(result);

	}


}
/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