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

public class Main {
	public static void main(String[] args){
		// input
		Scanner inData = new Scanner(System.in);

		// 種類
		int N = inData.nextInt();
		// 購入種別数
		int K = inData.nextInt();
		// 各種類ごとの値段
		int[] P = new int[N];
		for(int i=0; i<N; i++) P[i] = inData.nextInt();
		Arrays.sort(P);

		int kin = 0;
		for (int i = 0; i < K; i++) {
			kin += P[i];
		}

		System.out.println(kin);

		inData.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