#include <bits/stdc++.h>
using namespace std;
int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  int n, k;
  vector<int> A[200001];
  cin >> n >> k;
  for (int i = 1; i <= n; ++i) {
    int x, cnt = 0;
    cin >> x;
    while (x) {
      A[x].push_back(cnt++);
      if (x == 0) break;
      x >>= 1;
    }
  }
  int ans = 1e9;
  for (int i = 0; i <= 200000; ++i) {
    sort(A[i].begin(), A[i].end());
    if (A[i].size() < k) continue;
    int sum = 0;
    for (int j = 0; j < k; ++j) sum += A[i][j];
    ans = min(ans, sum);
  }
  printf("%d\n", ans);
  return 0;
}
