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