#include <bits/stdc++.h>
using namespace std;
using lint = long long;
constexpr lint mod = 998244353;
constexpr int inf9 = 1e9;
constexpr lint inf18 = 1e18;
inline void YES(bool condition) {
  if (condition)
    cout << "YES" << endl;
  else
    cout << "NO" << endl;
}
inline void Yes(bool condition) {
  if (condition)
    cout << "Yes" << endl;
  else
    cout << "No" << endl;
}
inline void assertNO(bool condition) {
  if (!condition) {
    cout << "NO" << endl;
    exit(0);
  }
}
inline void assertNo(bool condition) {
  if (!condition) {
    cout << "No" << endl;
    exit(0);
  }
}
inline void assertm1(bool condition) {
  if (!condition) {
    cout << -1 << endl;
    exit(0);
  }
}
lint power(lint base, lint exponent, lint module) {
  if (exponent % 2) {
    return power(base, exponent - 1, module) * base % module;
  } else if (exponent) {
    lint root_ans = power(base, exponent / 2, module);
    return root_ans * root_ans % module;
  } else {
    return 1;
  }
}
struct position {
  int y, x;
};
position mv[4] = {{0, -1}, {1, 0}, {0, 1}, {-1, 0}};
double euclidean(position first, position second) {
  return sqrt((second.x - first.x) * (second.x - first.x) +
              (second.y - first.y) * (second.y - first.y));
}
template <class T, class U>
string to_string(pair<T, U> x) {
  return to_string(x.first) + "," + to_string(x.second);
}
string to_string(string x) { return x; }
template <class T>
string to_string(complex<T> x) {
  return to_string(make_pair(x.real(), x.imag()));
}
template <class itr>
void array_output(itr start, itr goal) {
  string ans;
  for (auto i = start; i != goal; i++) cout << (i == start ? "" : " ") << (*i);
  if (!ans.empty()) ans.pop_back();
  cout << ans << endl;
}
template <class itr>
void cins(itr first, itr last) {
  for (auto i = first; i != last; i++) {
    cin >> (*i);
  }
}
template <class T>
T gcd(T a, T b) {
  if (b)
    return gcd(b, a % b);
  else
    return a;
}
template <class T>
T lcm(T a, T b) {
  return a / gcd(a, b) * b;
}
struct combination {
  vector<lint> fact, inv;
  combination(int sz) : fact(sz + 1), inv(sz + 1) {
    fact[0] = 1;
    for (int i = 1; i <= sz; i++) {
      fact[i] = fact[i - 1] * i % mod;
    }
    inv[sz] = power(fact[sz], mod - 2, mod);
    for (int i = sz - 1; i >= 0; i--) {
      inv[i] = inv[i + 1] * (i + 1) % mod;
    }
  }
  lint P(int n, int r) {
    if (r < 0 || n < r) return 0;
    return (fact[n] * inv[n - r] % mod);
  }
  lint C(int p, int q) {
    if (q < 0 || p < q) return 0;
    return (fact[p] * inv[q] % mod * inv[p - q] % mod);
  }
};
template <class itr>
bool next_sequence(itr first, itr last, int max_bound) {
  itr now = last;
  while (now != first) {
    now--;
    (*now)++;
    if ((*now) == max_bound) {
      (*now) = 0;
    } else {
      return true;
    }
  }
  return false;
}
template <class itr, class itr2>
bool next_sequence2(itr first, itr last, itr2 first2, itr2 last2) {
  itr now = last;
  itr2 now2 = last2;
  while (now != first) {
    now--, now2--;
    (*now)++;
    if ((*now) == (*now2)) {
      (*now) = 0;
    } else {
      return true;
    }
  }
  return false;
}
template <class T>
bool chmax(T &a, const T &b) {
  if (a < b) {
    a = b;
    return 1;
  }
  return 0;
}
template <class T>
bool chmin(T &a, const T &b) {
  if (b < a) {
    a = b;
    return 1;
  }
  return 0;
}
inline int at(lint i, int j) { return (i >> j) & 1; }
random_device rnd;
bool is_in_board(lint y, lint x, lint H, lint W) {
  return (0 <= y && y < H && 0 <= x && x < W);
}
template <typename Monoid>
struct SegmentTree {
  using F = function<Monoid(Monoid, Monoid)>;
  int sz;
  vector<Monoid> seg;
  const F f;
  const Monoid M1;
  SegmentTree(int n, const F f, const Monoid &M1) : f(f), M1(M1) {
    sz = 1;
    while (sz < n) sz <<= 1;
    seg.assign(2 * sz, M1);
  }
  void set(int k, const Monoid &x) { seg[k + sz] = x; }
  void build() {
    for (int k = sz - 1; k > 0; k--) {
      seg[k] = f(seg[2 * k + 0], seg[2 * k + 1]);
    }
  }
  void update(int k, const Monoid &x) {
    k += sz;
    seg[k] = x;
    while (k >>= 1) {
      seg[k] = f(seg[2 * k + 0], seg[2 * k + 1]);
    }
  }
  Monoid query(int a, int b) {
    Monoid L = M1, R = M1;
    for (a += sz, b += sz; a < b; a >>= 1, b >>= 1) {
      if (a & 1) L = f(L, seg[a++]);
      if (b & 1) R = f(seg[--b], R);
    }
    return f(L, R);
  }
  Monoid operator[](const int &k) const { return seg[k + sz]; }
};
int mx = 300000;
int main() {
  int N, K;
  cin >> N >> K;
  int A[N];
  vector<pair<int, int>> A_sort(N);
  cins(A, A + N);
  for (int i = 0; i < int(N); i++) {
    A_sort[i] = {A[i], i};
  }
  sort((A_sort).begin(), (A_sort).end());
  int A_inv[N];
  for (int i = 0; i < int(N); i++) {
    A_inv[A_sort[i].second] = i;
  }
  SegmentTree<int> seg(
      N, [](int a, int b) { return max(a, b); }, 0);
  for (int i = int(N) - 1; i >= 0; i--) {
    int l = int(
        lower_bound((A_sort).begin(), (A_sort).end(), make_pair(A[i] - K, -1)) -
        A_sort.begin());
    int r = int(lower_bound((A_sort).begin(), (A_sort).end(),
                            make_pair(A[i] + K, inf9)) -
                A_sort.begin());
    seg.update(A_inv[i], seg.query(l, r) + 1);
  }
  cout << seg[A_inv[0]] << endl;
}
