A password is considered strong if below conditions are all met:


 It has at least 6 characters and at most 20 characters. 
 It must contain at least one lowercase letter, at least one uppercase letter, and at least one digit. 
 It must NOT contain three repeating characters in a row ("...aaa..." is weak, but "...aa...a..." is strong, assuming other conditions are met). 


Write a function strongPasswordChecker(s), that takes a string s as input, and return the MINIMUM change required to make s a strong password. If s is already strong, return 0.

Insertion, deletion or replace of any one character are all considered as one change.

```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 strongPasswordChecker(self, s):\n         """\n         :type s: str\n         :rtype: int\n         """\n         def length_requirement(password):\n             length = len(password)\n             # positive means addition, negative means deletion\n             if length < 6:\n                 return 6 - length\n             elif length > 20:\n                 return 20 - length\n             else:\n                 return 0\n \n \n         def category_requirement(password):\n             # input\n             string = set(password)\n             lowercase = set(\'qwertyuiopasdfghjklzxcvbnm\')\n             uppercase = set(\'QWERTYUIOPASDFGHJKLZXCVBNM\')\n             digit = set(\'1234567890\')\n             condition = [lowercase, uppercase, digit]\n             # output positive for addition\n             missing = 0\n             for s in condition:\n                 if not s & string:\n                     missing += 1\n             return missing\n \n \n         def repeat_requirement(password):\n             # store the repeated character and counts its occurrence\n             count = 1\n             repeat = None\n             weak_pair = []\n             for c in password:\n                 if c == repeat:\n                     # the same character\n                     count += 1\n                 else:\n                     # new character\n                     if count >= 3:\n                         weak_pair.append([repeat, count])\n                     count = 1\n                     repeat = c\n             # add last pair\n             if count >= 3:\n                 weak_pair.append([repeat, count])\n             # length of \'aaaaaa\' divide by 3 returns the time of change\n             change = 0\n             one = 0\n             two = 0\n             for _, length in weak_pair:\n                 change += length // 3\n                 if length % 3 == 0:\n                     one += 1\n                 elif length % 3 == 1:\n                     two += 1\n             return change, one, two\n \n \n         def minimum_change(password):\n             print(password, end=\' \')\n             length = length_requirement(password)\n             category = category_requirement(password)\n             repeat, one, two = repeat_requirement(password)\n             # length: delete or insert\n             # category: insert or replace\n             # repeat: delete or replace, or insert\n             print(length, category, repeat, one, two, end=\' * \')\n \n             # insert or replace is effective\n             if length >= 0:\n                 return max(length, category, repeat)\n             else:\n                 # delete required\n                 repeat -= min(-length, one)\n                 repeat -= min(max(-length - one, 0), two * 2) // 2\n                 repeat -= max(-length - one - 2 * two, 0) // 3\n \n                 return -length + max(category, repeat)\n         \n         return minimum_change(s)\n         '
_co = compile(_CODE, USER_FILENAME, "exec")
exec(_co, ns, ns)

_target = None
_fn_name = 'strongPasswordChecker'
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: