Mrs Jefferson is a great teacher. One of her strategies that helped her to reach astonishing results in the learning process is to have some fun with her students. At school, she wants to make an arrangement of her class to play a certain game with her pupils. For that, she needs to create the arrangement with **the minimum amount of groups that have consecutive sizes**.

Let's see. She has      ```14``` students. After trying a bit she could do the needed arrangement:
        ```[5, 4, 3, 2]```
- one group of  ```5``` students
- another group of      ```4``` students
- then, another one of  ```3``` 
- and finally, the smallest group of    ```2``` students.

As the game was a success, she was asked to help to the other classes to teach and show the game. That's why she desperately needs some help to make this required arrangements that make her spend a lot of time. 

To make things worse, she found out that there are some classes with some special number of students that is impossible to get that arrangement.

Please, help this teacher!

Your code will receive the number of students of the class. It should output the arrangement as an array with the consecutive sizes of the groups in decreasing order.

For the special case that no arrangement of the required feature is possible the code should output     ```[-1] ```

The value of n is unknown and may be pretty high because some classes joined to to have fun with the game.

You may see more example tests in the Example Tests Cases Box.

```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 = 'def shortest_arrang(n):\n    nGrpMax = int( ((1+8*n)**.5-1)/2 )\n    for nGrp in range(2, nGrpMax+1):\n        maxInG = (2*n + nGrp**2 - nGrp) / (2*nGrp)\n        if maxInG == int(maxInG):\n            maxInG = int(maxInG)\n            return list(range(maxInG, maxInG-nGrp, -1))\n    return [-1]'
_co = compile(_CODE, USER_FILENAME, "exec")
exec(_co, ns, ns)

_target = None
_fn_name = 'shortest_arrang'
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: 5686