import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int k = sc.nextInt();
		Integer tree[] = new Integer[n];
		for (int i = 0; i < n; i++) {
            tree[i] = sc.nextInt();
		}		
		Arrays.sort(tree);
		int r = 0;
		for (int j = 0; j < k; j++) {
			r = r + tree[j];
		}
	  System.out.println(r);
	  sc.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