
import java.util.Collections;
import java.util.Scanner;
import java.util.Vector;
public class Main {

	public static void main(String[] args) {
		Scanner input=new Scanner(System.in);
		Vector <Integer> precios=new Vector<Integer>();
		short n=input.nextShort();
		int k=input.nextInt();
		for(int i=0;i<n;i++) {
			precios.add(input.nextInt());
		}
		Collections.sort(precios);
		int suma=0;
		for (int j=0;j<k;j++) {
			suma+=precios.get(j);
		}
		System.out.println(suma);
	}

}

/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