import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        int N = scanner.nextInt();
        int k = scanner.nextInt();
        int[] a = new int[N];
        for (int i = 0; i < N; i++) {
            a[i] = scanner.nextInt();
        }
        java.util.Arrays.sort(a);
        int sum = 0;
        for (int i = 0; i < k; i++) {
            sum += a[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