import java.util.Arrays;
import java.util.Scanner;

public class Main{
	public static void main(String[] args)throws Exception {
		Scanner scan = new Scanner(System.in);
		int a = scan.nextInt();
		int b = scan.nextInt();
		int sum = 0;
		int array[] = new int[a];

		for(int i = 0;i < a; i++) {
			array[i] = scan.nextInt();
		}
		Arrays.sort(array);
		for(int i = 0;i < b;i++) {
			sum += array[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