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

public class Main {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int N = scan.nextInt();
        int K = scan.nextInt();

        List<Integer> listN = new ArrayList<Integer>();

        for(int i = 0; i < N; i++){
            listN.add(scan.nextInt());
        }

        Collections.sort(listN);

        int sum = 0;

        for(int i = 0; i < K; i++){
            sum = sum + listN.get(i);
        }

        System.out.println(sum);

        scan.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