#include <bits/stdc++.h>
using namespace std;
int main() {
  int K, N;
  cin >> N >> K;
  int p[1000];
  for (int i = 0; i < N; i++) {
    cin >> p[i];
  }
  int minm = p[0], index = 0, sum = 0;
  for (int i = 0; i < K; i++) {
    for (int j = 0; j < N; j++) {
      if (minm > p[j] && p[j] != '\0') {
        minm = p[j];
        index = j;
      }
    }
    sum += minm;
    p[index] = '\0';
    for (int j = 0; j < N; j++) {
      if (p[j] != '\0') {
        minm = p[j];
        break;
      }
    }
  }
  cout << sum << endl;
}
