import java.util.*;

public class Main {
    public static void main(String[] args){

        Scanner scan = new Scanner( System.in );

        int N = Integer.parseInt( scan.next() );
        int K = Integer.parseInt( scan.next() );

        int[] p = new int[N];

        for (int i=0; i< p.length; i++){
            p[i] = Integer.parseInt( scan.next() );
        }
        Arrays.sort(p);

        int sum = 0;
        for(int i=0; i<K; i++){
            sum += p[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