A string with length $L$ is called rich if $L \ge 3$ and there is a character which occurs in this string strictly more than $L/2$ times.
You are given a string $S$ and you should answer $Q$ queries on this string. In each query, you are given a substring $S_L, S_{L+1}, \ldots, S_R$. Consider all substrings of this substring. You have to determine whether at least one of them is rich.

-----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 $Q$.
- The second line contains a single string $S$ with length $N$.
- Each of the next $Q$ lines contains two space-separated integers $L$ and $R$ describing a query.

-----Output-----
For each query, print a single line containing the string "YES" if the given substring contains a rich substring or "NO" if it does not contain any rich substring.

-----Constraints-----
- $1 \le T \le 10$
- $1 \le N, Q \le 10^5$
- $1 \le L \le R \le N$
- $S$ contains only lowercase English letters

-----Example Input-----
1
10 2
helloworld
1 3
1 10

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

```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 = 'def isvalid(s):\n if(s[0]==s[1] or s[1]==s[2] or s[0]==s[2]):\n  return 1\n return 0\nt=int(input())\nfor you in range(t):\n l=input().split()\n n=int(l[0])\n q=int(l[1])\n s=input()\n count=[0 for i in range(n-2)]\n fre=0\n for i in range(n-2):\n\n  if(isvalid(s[i:i+3])):\n   fre+=1\n  count[i]=fre\n\n for i in range(q):\n  l=input().split()\n  L=int(l[0])\n  R=int(l[1])\n  if(R-L+1<3):\n   print("NO")\n  else:\n   if(L==1):\n    if(count[R-3]>0):\n     print("YES")\n    else:\n     print("NO")\n   else:\n    if(count[R-3]-count[L-2]>0):\n     print("YES")\n    else:\n     print("NO")'
_co = compile(_CODE, USER_FILENAME, "exec")
exec(_co, ns, ns)

```

Measured memory_bytes: 13651