#include <bits/stdc++.h>
#pragma warning(disable : 4996)
int main() {
  int N = 0, K = 0;
  scanf("%d %d", &N, &K);
  int price[1000] = {0};
  for (int i = 0; i < N; i++) {
    scanf("%d", &price[i]);
  }
  for (int i = 0; i < N; i++) {
    for (int j = 0; j < N; j++) {
      if (price[j] > price[j + 1]) {
        int temp = price[j];
        price[j] = price[j + 1];
        price[j + 1] = temp;
      }
    }
  }
  int m = 0;
  for (int i = 0; i < K; i++) {
    m += price[i];
  }
  printf("%d", m);
  return 0;
}
