## **Task**

You are given a positive integer (`n`), and your task is to find the largest number **less than** `n`, which can be written in the form `a**b`, where `a` can be any non-negative integer and `b` is an integer greater than or equal to `2`. Try not to make the code time out :)

The input range is from `1` to `1,000,000`.

## **Return**

Return your answer in the form `(x, y)` or (`[x, y]`, depending on the language ), where `x` is the value of `a**b`, and `y` is the number of occurrences of `a**b`. By the way ** means ^ or power, so 2 ** 4 = 16.
If you are given a number less than or equal to `4`, that is not `1`, return `(1, -1)`, because there is an infinite number of values for it: `1**2, 1**3, 1**4, ...`.  
If you are given `1`, return `(0, -1)`.

## **Examples**

```
 3  -->  (1, -1)  # because it's less than 4
 6  -->  (4, 1)   # because the largest such number below 6 is 4,
                  # and there is only one way to write it: 2**2
65  -->  (64, 3)  # because there are three occurrences of 64: 2**6, 4**3, 8**2
90  -->  (81, 2)  # because the largest such number below 90 is 81,
                  # and there are two ways of getting it: 3**4, 9**2
```
By the way, after finishing this kata, please try some of my other katas: [here.](https://www.codewars.com/collections/tonylicodings-authored-katas)

```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 = 'from math import sqrt as s\ndef largest_power(n):\n    if n==1  : return (0,-1)\n    elif n<=4: return (1,-1)\n    else:\n        alist = []\n        for i in range(2, round(s(n) + 2)):\n            j=int(1)\n            while i**j<n:\n                a=i**j\n                j += 1\n            alist.append(a)\n            aset = (max(alist),alist.count(max(alist)))\n    return aset\n'
_co = compile(_CODE, USER_FILENAME, "exec")
exec(_co, ns, ns)

_target = None
_fn_name = 'largest_power'
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: 5728