#include <bits/stdc++.h>
using namespace std;

int main(){
 int n, k; cin >> n >> k;
  vector<int> box;
  for(int i = 0; i < n; ++i){
    cin >> box[i];
  }
  int sum = 0;
  for(int i = 0; i < k; ++i){
    int min = 0;
    int index;
    for(int j = 0; j < n - i; ++j){
      if(min > box[j]){
        min = box[j];
        index = j
      }
    }
    box.pop(box.at(index));
    sum += min;
  }
  cout << sum << endl;
 return 0; 
}