A k-multiple free set is a set of integers where there is no pair of integers where one is equal to another integer multiplied by k. That is, there are no two integers x and y (x < y) from the set, such that y = x·k.

You're given a set of n distinct positive integers. Your task is to find the size of it's largest k-multiple free subset.

Input

The first line of the input contains two integers n and k (1 ≤ n ≤ 105, 1 ≤ k ≤ 109). The next line contains a list of n distinct positive integers a1, a2, ..., an (1 ≤ ai ≤ 109).

All the numbers in the lines are separated by single spaces.

Output

On the only line of the output print the size of the largest k-multiple free subset of {a1, a2, ..., an}.

Examples

Input

6 2
2 3 6 5 4 10


Output

3

Note

In the sample input one of the possible maximum 2-multiple free subsets is {4, 5, 6}.
#include <bits/stdc++.h>
using namespace std;
int main() {
  map<signed long long int, bool> ss;
  int n, k, ans = 0;
  signed long long int da[100000 + 5];
  cin >> n >> k;
  for (int i = 1; i <= n; ++i) cin >> da[i];
  sort(da + 1, da + n + 1);
  for (int i = 1; i <= n; ++i) {
    if (da[i] % k == 0) {
      if (ss[da[i] / k] == 0) ss[da[i]] = 1, ++ans;
    } else
      ss[da[i]] = 1, ++ans;
  }
  cout << ans;
}
