import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc=new Scanner(System.in);
		int n = sc.nextInt(), choo = sc.nextInt();
		int[] x=new int[n];
		for(int i=0;i<n;i++)
			x[i] = sc.nextInt();
		long sum = 0;
		Arrays.sort(x);
		for(int i=0;i<choo;i++)
			sum+=x[i];
		System.out.println(sum);
	}
}

/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