# One is the loneliest number

## Task

The range of vision of a digit is its own value. `1` can see one digit to the left and one digit to the right,` 2` can see two digits, and so on.

Thus, the loneliness of a digit `N` is the sum of the digits which it can see.

Given a non-negative integer, your funtion must determine if there's at least one digit `1` in this integer such that its loneliness value is minimal.

## Example

```
number = 34315
```

digit | can see on the left | can see on the right | loneliness
--- | --- | --- | ---
3 | - | 431 | 4 + 3 + 1 = 8
4 | 3 | 315 | 3 + 3 + 1 + 5 = 12
3 | 34 | 15 | 3 + 4 + 1 + 5 = 13
1 | 3 | 5 | 3 + 5 = 8
5 | 3431 | - | 3 + 4 + 3 + 1 = 11

Is there a `1` for which the loneliness is minimal? Yes.

```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 calculate_loneliness(s, ind):\n    rng = int(s[ind])\n    if ind - rng < 0:\n        res_str = s[: ind] + s[ind + 1:ind + rng + 1]\n        return sum([int(char) for char in res_str])\n    res_str = s[ind - rng: ind] + s[ind + 1:ind + rng + 1]\n    return sum([int(char) for char in res_str])\n\n\ndef loneliest(n):\n    s = str(n)\n    if '1' not in s:\n        return False\n    lone_list = []\n    lst = []\n    for i in range(len(s)):\n        lone_list.append(calculate_loneliness(s, i))\n        lst.append(int(s[i]))\n    min_1 = lone_list[s.find('1')]\n    for i in range(len(lone_list)):\n        if lst[i] == 1:\n            if lone_list[i] < min_1:\n                min_1 = lone_list[i]\n  \n    if min(lone_list) == min_1:\n        return True\n    return False"
_co = compile(_CODE, USER_FILENAME, "exec")
exec(_co, ns, ns)

_target = None
_fn_name = 'loneliest'
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: 6581