// https://yukicoder.me/problems/no/2757
import kotlin.math.max

fun main() {
    val (N, K) = readln().split(" ").map { it.toInt() }
    val X = readln().split(" ").map { it.toInt() }.toIntArray()

    val dp = MutableList<Int>(N+1) { 0 }

    dp[0] = 0
    var base = 0
    var limit = -1

    for(i in 1..N) {
        limit = X[i-1] - K
        if(limit < X[0]) {
            dp[i] = 1

        } else {
            // limit以下でもっとも大きなXを取得
            while(X[base] <= limit) {
                base++
            }
            dp[i] = max(dp[i-1], dp[base] + 1)
        }
    }
    println(dp[N])
}