import java.util.Scanner;
 
class Main{
  public static void main(String[] args){
    
    Scanner scan = new Scanner(System.in);
    int N = scan.nextInt();
    int K = scan.nextInt();
    int [] p = new int[N];
    for(int i = 0; i < N; i++){
      p[i] = scan.nextInt();
    }
    int k;
    for(int j = 0; j < N-1; j++){
      for(int l = j+1; l < N; l++){
        if(p[j] > p[l]){
          k = p[j];
          p[j] = p[l];
          p[l] = k;
        }
      }
    }
    
    int sum = 0;
    for(int m = 0; m < K; m++){
      sum += p[m];
    }
    
    System.out.println(sum);
    
    scan.close();
  }
}       
/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