A number m of the form 10x + y is divisible by 7 if and only if x − 2y is divisible by 7. In other words, subtract twice the last digit 
from the number formed by the remaining digits. Continue to do this until a number known to be divisible or not by 7 is obtained; 
you can stop when this number has *at most* 2 digits because you are supposed to know if a number of at most 2 digits is divisible by 7 or not.

The original number is divisible by 7 if and only if the last number obtained using this procedure is divisible by 7. 

Examples:

1 - `m = 371 -> 37 − (2×1) -> 37 − 2 = 35` ; thus, since 35 is divisible by 7, 371 is divisible by 7. 

The number of steps to get the result is `1`.

2 - `m = 1603 -> 160 - (2 x 3) -> 154 -> 15 - 8 = 7` and 7 is divisible by 7. 

3 - `m = 372 -> 37 − (2×2) -> 37 − 4 = 33` ; thus, since 33 is not divisible by 7, 372 is not divisible by 7. 

The number of steps to get the result is `1`.

4 - `m = 477557101->47755708->4775554->477547->47740->4774->469->28` and 28 is divisible by 7, so is 477557101. 

The number of steps is 7.

# Task:
Your task is to return to the function ```seven(m)``` (m integer >= 0) an array (or a pair, depending on the language) of numbers, 
the first being the *last* number `m` with at most 2 digits obtained by your function (this last `m` will be divisible or not by 7), the second one being the number of steps to get the result.

## Forth Note:
Return on the stack `number-of-steps, last-number-m-with-at-most-2-digits `

## Examples:
```
seven(371) should return [35, 1]
seven(1603) should return [7, 2]
seven(477557101) should return [28, 7]
```

```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 unittest\n\n\ndef seven(m):\n\n    def _calc_last_rest(num):\n        return int(str(num)[-1]), int(str(num)[:-1])\n    if m == 0:\n        return (0, 0)\n\n    cnt = 0\n    last, rest = _calc_last_rest(m)\n    while True:\n        cnt += 1\n        result = rest - (2 * last)\n        if len(str(result)) <= 2:\n            return (result, cnt)\n        last, rest = _calc_last_rest(result)\n\n    \nclass TestSeven(unittest.TestCase):\n    def test_seven(self):\n        m = 1603\n        actual = seven(m)\n        self.assertEqual(actual, (7, 2))\n\n    def test_seven_second_case(self):\n        m = 1021\n        actual = seven(m)\n        self.assertEqual(actual, (10, 2))\n\n    def test_seven_when_m_is_0(self):\n        m = 0\n        actual = seven(m)\n        self.assertEqual(actual, (0, 0))\n'
_co = compile(_CODE, USER_FILENAME, "exec")
exec(_co, ns, ns)

_target = None
_fn_name = 'seven'
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: 5588