// iostream is too mainstream
#include <cstdio>
// bitch please
#include <iostream>
#include <algorithm>
#include <cstdlib>
#include <vector>
#include <set>
#include <map>
#include <queue>
#include <stack>
#include <list>
#include <cmath>
#include <iomanip>
#define dibs reserve
#define OVER9000 1234567890
#define ALL_THE(CAKE,LIE) for(auto LIE =CAKE.begin(); LIE != CAKE.end(); LIE++)
#define tisic 47
#define soclose 1e-8
#define chocolate win
// so much chocolate
#define patkan 9
#define ff first
#define ss second
#define abs(x) ((x < 0)?-(x):x)
#define uint unsigned int
#define dbl long double
using namespace std;
// mylittledoge

int main() {
	cin.sync_with_stdio(0);
	cin.tie(0);
	int N,K;
	cin >> N >> K;
	vector<int> A(N);
	map<int,int> M;
	for(int i =0; i < N; i++) {
		cin >> A[i];
		M[A[i]] =0;}
	int n =0;
	ALL_THE(M,it) it->ss =n++;
	for(int i =0; i < N; i++) A[i] =M[A[i]]/K;
	
	int ansT =0;
	vector<int> ans(N,1);
	for(int i =0; i < N; i++) {
		for(int j =0; j < i; j++) 
			if(A[j] <= A[i]) ans[i] =max(ans[i],ans[j]+1);
		ansT =max(ansT,ans[i]);}

	cout << N-ansT << "\n";
	return 0;}

// look at my code
// my code is amazing