package main

import "fmt"
import "os"
import "bufio"

func main() {
	rd:=bufio.NewReader(os.Stdin)
	var n,k,x int64
	fmt.Fscan(rd,&n,&k,&x)
	a:=1
	for p:=x ;n>1;n-- {
		fmt.Fscan(rd,&x)
		if x>=p+k {
			a++
			p=x
		}
	}
	fmt.Println(a)
}