# The die is cast!

Your task in this kata is to write a "dice roller" that interprets a subset of [dice notation](http://en.wikipedia.org/wiki/Dice_notation).

# Description

In most role-playing games, die rolls required by the system are given in the form `AdX`. `A` and `X` are variables, separated by the letter **d**, which stands for *die* or *dice*.

 - `A` is the number of dice to be rolled (usually omitted if 1).
 - `X` is the number of faces of each die.

Here are some examples of input:

# Modifiers

As an addition to the above rules the input may also contain modifiers in the form `+N` or `-N` where `N` is an integer.

Here are some examples of input containing modifiers:

*Modifiers must be applied **after** all dice has been summed up.*

# Output

Your function must support two types of output depending on the second argument; *verbose* and *summed*.

## Summed output
If the verbose flag isn't set your function should sum up all the dice and modifiers and return the result as an integer.

## Verbose output
With the verbose flag your function should return an object/hash containing an array (`dice`) with all the dice rolls, and a integer (`modifier`) containing the sum of the modifiers which defaults to zero.

Example of verbose output:

# Invalid input
Here are some examples of invalid inputs:

# Additional information

 - Your solution should ignore all whitespace.
 - `roll` should return `false` for invalid input.

```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 = "import re\nfrom random import randint\n\n\ndef roll(desc, verbose=False):\n    if not desc:\n        return False\n    m = re.match(r'^(\\d*)d(\\d+)(.*)$', desc)\n    if not m:\n        return False\n    num_dice, sides, modifiers = m.groups()\n    try:\n        modifier = sum(\n            int(a) for a in re.sub(r'([-+])', ' \\g<1>', modifiers).split())\n    except ValueError:\n        return False\n    nums = [randint(1, int(sides)) for _ in range(int(num_dice or 1))]\n    if verbose:\n        return {'dice': nums, 'modifier': modifier}\n    return sum(nums) + modifier\n"
_co = compile(_CODE, USER_FILENAME, "exec")
exec(_co, ns, ns)

_target = None
_fn_name = 'roll'
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: 5668