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


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

/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