Chef works in a similar way to a travelling salesman ― he always travels to new cities in order to sell his delicious dishes.
Today, Chef is planning to visit $N$ cities (numbered $1$ through $N$). There is a direct way to travel between each pair of cities. Each city has a specific temperature; let's denote the temperature in the $i$-th city by $C_i$. Chef has a fixed temperature tolerance $D$ with the following meaning: for each pair of cities $a$ and $b$, he may travel from city $a$ directly to city $b$ only if $|C_a-C_b| \le D$, otherwise he would catch a heavy flu because of the sudden change in temperature.
Chef starts from city $1$. Is he able to visit all $N$ cities in such a way that each city is visited exactly once?
Notes:
- Chef is not able to travel through a city without visiting it.
- City $1$ is visited at the beginning.
- It is not necessary to be able to travel directly to city $1$ from the last city Chef visits.

-----Input-----
- The first line of the input contains a single integer $T$ denoting the number of test cases. The description of $T$ test cases follows.
- The first line of each test case contains two space-separated integers $N$ and $D$.
- The second line contains $N$ space-separated integers $C_1, C_2, \ldots, C_N$.

-----Output-----
For each test case, print a single line containing the string "YES" (without quotes) if Chef can visit all cities or "NO" (without quotes) if he cannot.

-----Constraints-----
- $1 \le T \le 1,000$
- $2 \le N \le 10^5$
- $0 \le D \le 10^9$
- $0 \le C_i \le 10^9$ for each valid $i$
- the sum of $N$ over all test cases does not exceed $10^6$

-----Subtasks-----
Subtask #1 (20 points):
- $N \le 1,000$
- the sum of $N$ over all test cases does not exceed $10,000$
Subtask #2 (80 points): original constraints

-----Example Input-----
2
5 3
3 2 1 4 5
5 4
10 1 3 2 9

-----Example Output-----
YES
NO

```python

USER_FILENAME = "<user_code>"
import sys, json, builtins
import math, heapq, bisect, itertools, functools, collections, statistics, fractions, decimal, operator, array, random, re, string, os, pathlib
try:
    import resource as _res
except Exception:
    _res = None
from collections import Counter, defaultdict, deque, OrderedDict
from functools import lru_cache, reduce
from itertools import accumulate, permutations, combinations, product
from math import gcd, ceil, floor, sqrt
from decimal import Decimal
try:
    from typing import *
except Exception:
    pass
try:
    sys.setrecursionlimit(1_000_000)
except Exception:
    pass
try:
    import site as _site
    try:
        _sys_sites = _site.getsitepackages() if hasattr(_site, "getsitepackages") else []
        for _p in _sys_sites:
            if _p and _p not in sys.path:
                sys.path.append(_p)
    except Exception:
        pass
    try:
        _usp = _site.getusersitepackages()
        if isinstance(_usp, str):
            _usp = [_usp]
        for _p in _usp:
            if _p and _p not in sys.path:
                sys.path.append(_p)
    except Exception:
        pass
except Exception:
    pass

ns = {"__name__": "__main__"}
for _k, _v in list(globals().items()):
    if not _k.startswith("_"):
        ns[_k] = _v
_CODE = '# cook your dish here\n# cook your dish here\nfor _ in range(int(input())):\n n,d=map(int,input().split())\n li=list(map(int,input().split()))\n ini=li[0]\n li.sort()\n tvl=1\n nidx=li.index(ini)\n for i in range(n-1):\n  if li[i+1]-li[i]>d:\n   tvl=0\n   break\n flag=0\n if tvl:    \n  if(nidx!=0 or nidx!=n-1):\n   i=nidx\n   while(i<n-1):\n    if li[i+1]-li[i-1]>d:\n     tvl=0\n     break\n    else:\n     if(i==n-2):\n     \n      break\n     else:\n      if(li[i+2]-li[i]<=d):\n       i+=2\n      else:\n       tvl=0\n       break \n   if not tvl:\n    i=nidx\n    while(i>0):\n     if li[i+1]-li[i-1]>d:\n      tvl=0\n      break\n     else:\n      if(i==1):\n       flag=1\n       break\n      else:\n       if(li[i]-li[i-2]<=d):\n        i-=2\n       else:\n        tvl=0\n        break\n    if((i==1 and flag) or i==0):\n     tvl=1\n if(tvl==0):\n  print("NO")\n else:\n  print("YES")'
_co = compile(_CODE, USER_FILENAME, "exec")
exec(_co, ns, ns)

```

Measured memory_bytes: 13665