import java.util.Scanner;
public class Main{
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int k = sc.nextInt();
		int[] price = new int[n];
		for(int i = 0; i < n; i++){
			price[i] = sc.nextInt();
		}
		for(int i = 0; i < n; i++){
			for(int j = i; j < n; j++){
				if(price[i] > price[j]){
					int tmp = price[i];
					price[i] = price[j];
					price[j] = tmp;
				}
			}
		}
		int res = 0;
		for(int i = 0; i < k; i++){
			res += price[i];
		}
		System.out.println(res);
	}

}
/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