import java.util.*;

public class Main {
    public static void main(String[] args ) throws Exception {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        int K = sc.nextInt();
        int[] all = new int[N];
        for(int i = 0;i < N;i++) {
            all[i] = sc.nextInt();
        }
        Arrays.sort(all);
        int buy = 0;
        for(int i = 0;i < K;i++){
            buy += all[i];
        }
        System.out.println(buy);
    }
}

/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