# Background

My TV remote control has arrow buttons and an `OK` button.

I can use these to move a "cursor" on a logical screen keyboard to type words...

# Keyboard

The screen "keyboard" layout looks like this


  #tvkb {
    width : 400px;
    border: 5px solid gray; border-collapse: collapse;
  }
  #tvkb td {
    color : orange;
    background-color : black;
    text-align : center;
    border: 3px solid gray; border-collapse: collapse;
  }


abcde123
fghij456
klmno789
pqrst.@0
uvwxyz_/
aASP



* `aA` is the SHIFT key. Pressing this key toggles alpha characters between UPPERCASE and lowercase
* `SP` is the space character
* The other blank keys in the bottom row have no function

# Kata task

How many button presses on my remote are required to type the given `words`?

## Notes

* The cursor always starts on the letter `a` (top left)
* The alpha characters are initially lowercase (as shown above)
* Remember to also press `OK` to "accept" each letter
* Take a direct route from one letter to the next
* The cursor does not wrap (e.g. you cannot leave one edge and reappear on the opposite edge)
* Although the blank keys have no function, you may navigate through them if you want to
* Spaces may occur anywhere in the `words` string.
* Do not press the SHIFT key until you need to. For example, with the word `e.Z`, the SHIFT change happens **after** the `.` is pressed (not before)
 
# Example

words = `Code Wars`

* C => `a`-`f`-`k`-`p`-`u`-`aA`-OK-`U`-`P`-`K`-`F`-`A`-`B`-`C`-OK = 14
* o => `C`-`H`-`M`-`R`-`W`-`V`-`U`-`aA`-OK-`SP`-`v`-`q`-`l`-`m`-`n`-`o`-OK = 16
* d => `o`-`j`-`e`-`d`-OK = 4
* e => `d`-`e`-OK = 2
* space => `e`-`d`-`c`-`b`-`g`-`l`-`q`-`v`-`SP`-OK = 9
* W => `SP`-`aA`-OK-`SP`-`V`-`W`-OK = 6
* a => `W`-`V`-`U`-`aA`-OK-`u`-`p`-`k`-`f`-`a`-OK = 10
* r => `a`-`f`-`k`-`p`-`q`-`r`-OK = 6
* s => `r`-`s`-OK = 2

Answer = 14 + 16 + 4 + 2 + 9 + 6 + 10 + 6 + 2 = 69



*Good Luck!
DM.*



Series
* TV Remote
* TV Remote (shift and space)
* TV Remote (wrap)
* TV Remote (symbols)

```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 = "raw = 'abcde123fghij456klmno789pqrst.@0uvwxyz_/'\nlayout = {char: divmod(i, 8) for i, char in enumerate(raw)}\nlayout['SHIFT'] = (5, 0)\nlayout[' '] = (5,1)\n\ndef distance(a, b):\n    return abs(a[0] - b[0]) + abs(a[1] - b[1]) + 1\n\n\nclass Keyboard:\n    def __init__(self):\n        self.total = 0\n        self.cap = False\n        self.current = (0,0)\n        \n    def hit_shift(self):\n        self.total += distance(self.current, layout['SHIFT'])\n        self.cap = not self.cap\n        self.current = layout['SHIFT']\n    \n    def next_letter(self, letter):\n        if letter.isupper() and not self.cap:\n            self.hit_shift()\n        elif letter.islower() and self.cap:\n            self.hit_shift()\n        \n        self.total += distance(self.current, layout[letter.lower()])\n        self.current = layout[letter.lower()]\n    \n    def solve(self, word):\n        for char in word:\n            self.next_letter(char)\n\n\ndef tv_remote(words):\n    k = Keyboard()\n    k.solve(words)\n    return k.total\n"
_co = compile(_CODE, USER_FILENAME, "exec")
exec(_co, ns, ns)

_target = None
_fn_name = 'tv_remote'
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: 6658