#include<iostream>
#include<cstdio>
#include<cstring>
#include<string>
#include<cmath>
#include<queue>
#include<stack>
#include<algorithm>
#define int long long
#define ull unsigned long long
using namespace std;
const int N=1e7+5;
const int M=2e6+5;
const int INF=0x3f3f3f3f;
inline int read(){
	int x=0,f=1;char ch=getchar();
	while (ch<'0'||ch>'9'){if (ch=='-') f=-1;ch=getchar();}
	while (ch>='0'&&ch<='9'){x=x*10+ch-48;ch=getchar();}
	return x*f;
}
int n,a[N],k;
signed main(){
	n=read();
	k=read();
	for(int i=1;i<=n;i++){
		a[i]=read();
	}
	sort(a+1,a+1+n);
	int mt=a[1],times=1;
	for(int i=1;i<=n;i++){
		
		if(a[i]-mt>k){
			mt=a[i];
			times++;
		}
		//cout << a[i] << " " << mt << " " << times << endl;
	}
	cout << times;
	return 0;
}