import java.util.*;
import java.io.*;
import java.lang.*;


class Main{
	public static void main(String args[]){
    	Scanner in = new Scanner(System.in);
      	int n = in.nextInt();
		int m = in.nextInt();
		int[] ar = new int[n];
		for(int i = 0 ; i < n ; i++){
			ar[i] = in.nextInt();
		}
		
		Arrays.sort(ar);

		int cost = 0;
		for(int i = 0 ; i < m ; i++){
			cost += ar[i];
		}
		
		System.out.println(cost);
    }
 
}
/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