A subarray A[i], A[i+1], ..., A[j] of A is said to be turbulent if and only if:

For i <= k < j, A[k] > A[k+1] when k is odd, and A[k] < A[k+1] when k is even;
OR, for i <= k < j, A[k] > A[k+1] when k is even, and A[k] < A[k+1] when k is odd.

That is, the subarray is turbulent if the comparison sign flips between each adjacent pair of elements in the subarray.
Return the length of a maximum size turbulent subarray of A.
 

Example 1:
Input: [9,4,2,10,7,8,8,1,9]
Output: 5
Explanation: (A[1] > A[2] < A[3] > A[4] < A[5])


Example 2:
Input: [4,8,12,16]
Output: 2


Example 3:
Input: [100]
Output: 1




 
Note:

1 <= A.length <= 40000
0 <= A[i] <= 10^9

```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

def _disabled_input(*args, **kwargs):
    raise RuntimeError("input() is disabled in callable mode")
builtins.input = _disabled_input

ns = {"__name__": "__judge__"}  # prevent if __name__ == "__main__" blocks
for _k, _v in list(globals().items()):
    if not _k.startswith("_"):
        ns[_k] = _v
_CODE = 'class Solution:\n    def maxTurbulenceSize(self, A: List[int]) -> int:\n        #Longest, dp, or memoisation\n        \n        if(len(A)==0):return 0\n        if(len(A)==1):return 1\n        max_t=1\n        sgn=0 #1: next array should be larger, -1:smaller, 0:new\n        current_l=0\n        i=0\n        while True:      \n            #print(A[i],current_l,sgn)\n            if(sgn==1 and A[i]>A[i-1]):\n                sgn=-sgn\n                current_l+=1 \n            elif(sgn==-1 and A[i]<A[i-1]):\n                sgn=-sgn\n                current_l+=1              \n            elif(sgn==0):\n                current_l=1\n                if(i < len(A)-1):\n                    if(A[i+1]>A[i]):\n                        sgn=1\n                    elif(A[i+1]<A[i]):\n                        sgn=-1\n                    else:\n                        sgn=0                \n            else:\n                i+=-1 #back!\n                max_t=max(current_l,max_t)\n                current_l=1\n                if(i < len(A)-1):\n                    if(A[i+1]>A[i]):\n                        sgn=1\n                    elif(A[i+1]<A[i]):\n                        sgn=-1\n                    else:\n                        sgn=0\n                else:\n                    #already end\n                    max_t = max(max_t,1)   \n            i+=1\n            if(i==len(A)):\n                break\n        max_t=max(current_l,max_t) \n        return max_t\n        \n                    \n                    \n                \n            \n'
_co = compile(_CODE, USER_FILENAME, "exec")
exec(_co, ns, ns)

_target = None
_fn_name = 'maxTurbulenceSize'
if _fn_name:
    if "Solution" in ns:
        try:
            _obj = ns["Solution"]()
            if hasattr(_obj, _fn_name):
                _target = getattr(_obj, _fn_name)
        except Exception:
            _target = None
    if _target is None and _fn_name in ns and callable(ns[_fn_name]):
        _target = ns[_fn_name]
# Fallback: if there's exactly one user-defined function, use it
if _target is None:
    _cands = [v for k, v in ns.items() if callable(v) and getattr(v, "__module__", "") in ("__judge__", "__main__")]
    _user_funcs = [c for c in _cands if getattr(c, "__name__", "").startswith("_") is False]
    if len(_user_funcs) == 1:
        _target = _user_funcs[0]
if _target is None:
    raise RuntimeError(f"Could not resolve callable '{_fn_name}'")

_raw = sys.stdin.read().strip()
if _raw:
    _parsed = json.loads(_raw)
    if isinstance(_parsed, dict):
        _kwargs = _parsed.get("kwargs", {})
        _args = _parsed.get("args", [])
    else:
        _args, _kwargs = _parsed, {}
else:
    _args, _kwargs = [], {}
if not isinstance(_args, (list, tuple)):
    _args = [_args]
_res = _target(*_args, **_kwargs)
try:
    sys.stdout.write(repr(_res) + "\n")
except Exception:
    pass

```

Measured memory_bytes: 5984