{
 "cells": [
  {
   "cell_type": "markdown",
   "id": "a1c78136",
   "metadata": {},
   "source": [
    "# 17-16 · Osiem linii płatnych\n",
    "\n",
    "Praktyka do sekcji [„Osiem zwycięskich linije”"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "bbac8f01",
   "metadata": {},
   "source": [
    "## Cel\n",
    "\n",
    "Sprawdź find_winner() na wszystkich ośmiu liniach dla X i dla O."
   ]
  },
  {
   "cell_type": "markdown",
   "id": "084cf98a",
   "metadata": {},
   "source": [
    "## Sprawa robocza"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "id": "5bab129d",
   "metadata": {
    "execution": {
     "iopub.execute_input": "2026-09-03T10:12:56.650060Z",
     "iopub.status.busy": "2026-09-03T10:12:56.649911Z",
     "iopub.status.idle": "2026-09-03T10:12:56.670651Z",
     "shell.execute_reply": "2026-09-03T10:12:56.669925Z"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "('X', (0, 1, 2))\n"
     ]
    }
   ],
   "source": [
    "WINNING_LINES = (\n",
    "    (0, 1, 2), (3, 4, 5), (6, 7, 8),\n",
    "    (0, 3, 6), (1, 4, 7), (2, 5, 8),\n",
    "    (0, 4, 8), (2, 4, 6),\n",
    ")\n",
    "\n",
    "def find_winner(board):\n",
    "    for a, b, c in WINNING_LINES:\n",
    "        mark = board[a]\n",
    "        if mark and mark == board[b] == board[c]:\n",
    "            return mark, (a, b, c)\n",
    "    return None, None\n",
    "\n",
    "doska = [\"X\", \"X\", \"X\", \"\", \"O\", \"O\", \"\", \"\", \"\"]\n",
    "print(find_winner(doska))"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "5bca4a51",
   "metadata": {},
   "source": [
    "## Sprawdzanie wyniku – wszystkie osiem linii, obaj zawodnicy"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "id": "b4d0e965",
   "metadata": {
    "execution": {
     "iopub.execute_input": "2026-09-03T10:12:56.672446Z",
     "iopub.status.busy": "2026-09-03T10:12:56.672304Z",
     "iopub.status.idle": "2026-09-03T10:12:56.675571Z",
     "shell.execute_reply": "2026-09-03T10:12:56.675075Z"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Все восемь линий верны для X и O.\n"
     ]
    }
   ],
   "source": [
    "def board_for_line(line, mark):\n",
    "    board = [\"\"] * 9\n",
    "    for i in line:\n",
    "        board[i] = mark\n",
    "    return board\n",
    "\n",
    "vse_linii_ok = True\n",
    "for mark in (\"X\", \"O\"):\n",
    "    for line in WINNING_LINES:\n",
    "        winner, winning_line = find_winner(board_for_line(line, mark))\n",
    "        if winner != mark or set(winning_line) != set(line):\n",
    "            vse_linii_ok = False\n",
    "\n",
    "assert vse_linii_ok is True\n",
    "assert find_winner([\"\"] * 9) == (None, None)\n",
    "print(\"Все восемь линий верны для X и O.\")"
   ]
  }
 ],
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