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

public class Main {
	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		
		int N = in.nextInt();
		int K = in.nextInt();
		int sum = 0;
		Integer a[] = new Integer[N];
		Integer b[] = new Integer[K];
		
		for(int i = 0;i < N;i++) {
			a[i] = in.nextInt();
		}
		
		Arrays.sort(a,Comparator.naturalOrder());
		
		for(int i = 0;i < K;i++) {
			b[i] = a[i];
		}
		
		for(int i = 0;i < K;i++) {
			sum += b[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