In Dark Souls, players level up trading souls for stats. 8 stats are upgradable this way: vitality, attunement, endurance, strength, dexterity, resistance, intelligence, and faith. Each level corresponds to adding one point to a stat of the player's choice. Also, there are 10 possible classes each having their own starting level and stats:

```
Warrior     (Level 4):  11, 8, 12, 13, 13, 11, 9, 9
Knight      (Level 5):  14, 10, 10, 11, 11, 10, 9, 11
Wanderer    (Level 3):  10, 11, 10, 10, 14, 12, 11, 8
Thief       (Level 5):  9, 11, 9, 9, 15, 10, 12, 11
Bandit      (Level 4):  12, 8, 14, 14, 9, 11, 8, 10
Hunter      (Level 4):  11, 9, 11, 12, 14, 11, 9, 9
Sorcerer    (Level 3):  8, 15, 8, 9, 11, 8, 15, 8
Pyromancer  (Level 1):  10, 12, 11, 12, 9, 12, 10, 8
Cleric      (Level 2):  11, 11, 9, 12, 8, 11, 8, 14
Deprived    (Level 6):  11, 11, 11, 11, 11, 11, 11, 11
```

From level 1, the necessary souls to level up each time up to 11 are `673`, `690`, `707`, `724`, `741`, `758`, `775`, `793`, `811`, and `829`. Then from 11 to 12 and onwards the amount is defined by the expression `round(pow(x, 3) * 0.02 + pow(x, 2) * 3.06 + 105.6 * x - 895)` where `x` is the number corresponding to the next level.

Your function will receive a string with the character class and a list of stats. It should calculate which level is required to get the desired character build and the amount of souls needed to do so. The result should be a string in the format: `'Starting as a [CLASS], level [N] will require [M] souls.'` where `[CLASS]` is your starting class, `[N]` is the required level, and `[M]` is the amount of souls needed respectively.

```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 = 'CLASSES = {"warrior": {"stats": [11, 8, 12, 13, 13, 11, 9, 9], "lvl": 4},\n           "knight": {"stats": [14, 10, 10, 11, 11, 10, 9, 11], "lvl": 5},\n           "wanderer": {"stats": [10, 11, 10, 10, 14, 12, 11, 8], "lvl": 3},\n           "thief": {"stats": [9, 11, 9, 9, 15, 10, 12, 11], "lvl": 5},\n           "bandit": {"stats": [12, 8, 14, 14, 9, 11, 8, 10], "lvl": 4},\n           "hunter": {"stats": [11, 9, 11, 12, 14, 11, 9, 9], "lvl": 4},\n           "sorcerer": {"stats": [8, 15, 8, 9, 11, 8, 15, 8], "lvl": 3},\n           "pyromancer": {"stats": [10, 12, 11, 12, 9, 12, 10, 8], "lvl": 1},\n           "cleric": {"stats": [11, 11, 9, 12, 8, 11, 8, 14], "lvl": 2},\n           "deprived": {"stats": [11, 11, 11, 11, 11, 11, 11, 11], "lvl": 6}}\n\ndef souls(character, build):\n    required_lvl = sum(build) - sum(CLASSES[character]["stats"]) + CLASSES[character]["lvl"]\n    souls_needed = sum([calc_exp(lvl) for lvl in range(CLASSES[character]["lvl"] + 1, required_lvl + 1)])\n    return f"Starting as a {character}, level {required_lvl} will require {souls_needed} souls."\n\ndef calc_exp(lvl):\n    return 673 + 17 * (lvl - 2) if lvl <= 8 else 775 + 18 * (lvl - 8) if lvl <= 11 else round(pow(lvl, 3) * 0.02 + pow(lvl, 2) * 3.06 + 105.6 * lvl - 895)'
_co = compile(_CODE, USER_FILENAME, "exec")
exec(_co, ns, ns)

_target = None
_fn_name = 'souls'
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: 5692