import java.util.*;
public class Main {
    public static void main(String[] args) {
        Scanner console = new Scanner(System.in);
        int fruitTypeNum = console.nextInt();
        int buyFruitNum = console.nextInt();
        console.nextLine();

        ArrayList<Integer> minPrices = new ArrayList<Integer>(fruitTypeNum);
        for(int i = 0; i < fruitTypeNum; i++){
            minPrices.add(console.nextInt());
        }
        Collections.sort(minPrices);

        int total = 0;
        for(int i = 0; i < buyFruitNum; i++){
            total += minPrices.get(i);
        }
        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