We need a function ```count_sel()``` that receives an array or list of integers (positive and negative) and may give us the following information in the order and  structure presented bellow:

```[(1), (2), (3), [[(4)], 5]]```

(1) - Total amount of received integers.

(2) - Total amount of different values the array has.

(3) - Total amount of values that occur only once.

(4) and (5) both in a list

(4) - It is (or they are) the element(s) that has (or have) the maximum occurrence. If there are more than one, the elements should be sorted (by their value obviously)

(5) - Maximum occurrence of the integer(s)

Let's see some cases
```python
____ count_sel([-3, -2, -1, 3, 4, -5, -5, 5, -1, -5]) ----> [10, 7, 5, [[-5], 3]]

(1) - The list has ten elements (10 numbers)

(2) - We have seven different values: -5, -3, -2, -1, 3, 4, 5 (7 values)

(3) - The numbers that occur only once: -3, -2, 3, 4, 5 (5 values)

(4) and (5) - The number -5 occurs three times (3 occurrences)

____ count_sel([4, 4, 2, -3, 1, 4, 3, 2, 0, -5, 2, -2, -2, -5]) ----> [14, 8, 4, [[2, 4], 3]]
```
Enjoy it and happy coding!!

```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 collections import Counter\n\ndef count_sel(lst):\n    c = Counter(lst)\n    length = len(lst)\n    unique = len(c)\n    once = sum(1 for elem, cnt in c.items() if cnt == 1)\n    max_occur = max(c.values())\n    most = sorted(elem for elem, cnt in c.items() if cnt == max_occur)\n    \n    return [length, unique, once, [most, max_occur]]'
_co = compile(_CODE, USER_FILENAME, "exec")
exec(_co, ns, ns)

_target = None
_fn_name = 'count_sel'
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: 9872