# 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`?

## Hint

This Kata is an extension of the earlier ones in this series. You should complete those first.

## 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 the shortest route from one letter to the next
* The cursor wraps, so as it moves off one edge it will 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`-`aA`-OK-`A`-`B`-`C`-OK = 6
* o => `C`-`B`-`A`-`aA`-OK-`u`-`v`-`w`-`x`-`y`-`t`-`o`-OK = 12
* d => `o`-`j`-`e`-`d`-OK = 4
* e => `d`-`e`-OK = 2
* space => `e`-`d`-`c`-`b`-`SP`-OK = 5
* W => `SP`-`aA`-OK-`SP`-`V`-`W`-OK = 6
* a => `W`-`V`-`U`-`aA`-OK-`a`-OK = 6
* r => `a`-`f`-`k`-`p`-`q`-`r`-OK = 6
* s => `r`-`s`-OK = 2

Answer = 6 + 12 + 4 + 2 + 5 + 6 + 6 + 6 + 2 = 49



*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 = "def tv_remote(word):\n    matrix = [\n             ['a', 'b', 'c', 'd', 'e', '1', '2', '3'],\n             ['f', 'g', 'h', 'i', 'j', '4', '5', '6'],\n             ['k', 'l', 'm', 'n', 'o', '7', '8', '9'],\n             ['p', 'q', 'r', 's', 't', '.', '@', '0'],\n             ['u', 'v', 'w', 'x', 'y', 'z', '_', '/'],\n             ['aA', ' '],\n             ]\n\n    vertical_inversion = {0:0, 1:1, 2:2, 3:3, 4:2, 5:1}\n    horizontal_inversion = {0:0, 1:1, 2:2, 3:3, 4:4, 5:3, 6:2, 7:1}\n    actions = ([0, 0],)\n    upper_mode = False\n    press_ok = 0\n    func = lambda x, y: (vertical_inversion[abs(x[0]-y[0])] + horizontal_inversion[abs(x[1]-y[1])])\n\n    for char in word:\n        for i in range(6):\n            if char.lower() in matrix[i]:\n                if char.isupper() and not upper_mode:\n                    actions += ([5, 0],)\n                    upper_mode = True\n                    press_ok += 1\n                    actions += ([i, matrix[i].index(char.lower())],)\n                    press_ok += 1\n                elif char.isupper() and upper_mode:\n                    actions += ([i, matrix[i].index(char.lower())],)\n                    press_ok += 1\n                elif char.islower() and upper_mode:\n                    actions += ([5, 0],)\n                    upper_mode = False\n                    press_ok += 1\n                    actions += ([i, matrix[i].index(char.lower())],)\n                    press_ok += 1\n                elif char.islower() and not upper_mode:\n                    actions += ([i, matrix[i].index(char.lower())],)\n                    press_ok += 1\n                else:\n                    actions += ([i, matrix[i].index(char.lower())],)\n                    press_ok += 1\n\n    return sum([func(i[0], i[1]) for i in list(zip(actions, actions[1:]))]) + press_ok"
_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: 12066