#define _USE_MATH_DEFINES
#include <bits/stdc++.h>

#define rep(i, n) for (int i = 0; i < (n); ++i)
#define reps(i, n) for (int i = 1; i <= (n); ++i)
#define repd(i, n) for (int i = (n)-1; i >= 0; --i)
#define repds(i, n) for (int i = (n); i > 0; --i)
#define loop(i, x, n) for (int i = (x); i < (n); ++i)
#define loops(i, x, n) for (int i = (x); i <= (n); ++i)
#define loopd(i, x, n) for (int i = (x); i > (n); --i)
#define loopds(i, x, n) for (int i = (x); i >= (n); --i)
#define itrep(i, a) for (auto i = begin(a); i != end(a); ++i)
#define itrepd(i, a) for (auto i = rbegin(a); i != rend(a); ++i)
#define each(i, x) for (auto &&i : x)
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define sz(a) ((int)a.size())
#define pow2(n) (n * n)
#define int ll
using namespace std;
using ll = long long;
using ld = long double;
using ull = unsigned long long;
template <class T>
using p_queue = priority_queue<T, vector<T>, greater<T>>;
constexpr ll inf = static_cast<ll>(1e18);
constexpr int iinf = static_cast<int>(1e9);
constexpr double dinf = 1e10;
constexpr ld ldinf = 1e18;
constexpr double eps = 1e-8;
ll mod = static_cast<ll>(1e9 + 7);
template <class T, class... Args>
constexpr void mins(T &a, Args... args) { a = min<T>({a, args...}); }
template <class T, class... Args>
constexpr void maxs(T &a, Args... args) { a = max<T>({a, args...}); }
template <class F>
class FixPoint : private F {
public:
    explicit constexpr FixPoint(F &&f) : F(std::forward<F>(f)) {}
    template <class... Args>
    constexpr decltype(auto) operator()(Args &&... args) const { return F::operator()(*this, std::forward<Args>(args)...); }
};
template <class F>
constexpr decltype(auto) funcs(F &&f) { return FixPoint<F>{std::forward<F>(f)}; }
template <class T>
std::vector<T> vecs(int n, T &&val) { return std::vector<T>(std::forward<int>(n), std::forward<T>(val)); }
template <class... Args>
decltype(auto) vecs(int n, Args &&... args) { return std::vector<decltype(vecs(std::forward<Args>(args)...))>(std::forward<int>(n), vecs(std::forward<Args>(args)...)); }
template <class V, class T>
void fill(V &x, const T &val) { x = val; }
template <class V, class T>
void fill(vector<V> &vec, const T &val) {
    for (auto &&v : vec)
        fill(v, val);
}

template <class T>
class SegmentTree {
public:
    SegmentTree(int n_, T init, T limit_, std::function<T(T, T)> comp_) : n(1), limit(limit_), comp(comp_) {
        while (n < n_)
            n *= 2;
        d.resize(2 * n - 1, init);
    }
    // d[k] = a
    void update(int k, T x) {
        k += n - 1;
        d[k] = x;
        while (k > 0) {
            k = (k - 1) >> 1;
            d[k] = comp(d[2 * k + 1], d[2 * k + 2]);
        }
    }
    // comp() [a,b)
    T query(int a, int b, int k = 0, int l = 0, int r = -1) {
        if (r < 0) r = n;
        if (r <= a || b <= l) return limit;
        if (a <= l && r <= b) return d[k];
        T vl = query(a, b, 2 * k + 1, l, (l + r) >> 1);
        T vr = query(a, b, 2 * k + 2, (l + r) >> 1, r);
        return comp(vl, vr);
    }

private:
    int n;
    const T limit;
    std::function<T(T, T)> comp;
    vector<T> d;
};

void solve() {
    int n, k;
    cin >> n >> k;

    vector<int> a(n);
    rep(i, n) cin >> a[i];

    SegmentTree<int> st(300005, 0, -inf, [](auto a, auto b) { return max(a, b); });
    rep(i, n) {
        auto mn = max(0LL, a[i] - k);
        auto mx = min(300002LL, a[i] + k + 1);
        auto val = st.query(mn, mx) + 1;
        st.update(a[i], val);
    }

    cout << st.query(0, 300002) << endl;
}

signed main() {
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    cout << fixed << setprecision(15);
    solve();
    cout.flush();
    return 0;
}

Measured memory_bytes: 13772