イニフィニティNumpy 2章Q19(応用):魔王と勇者のデータサイエンス

yusha.ipynb

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     "text": [
      "(0, 5)\n(0, 100)\n(0, 67)\n(387, 20)\n(920, 8)\n"
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   "source": [
    "import numpy as np\n",
    "def battle(num_heros=5, satan_base_power=80, satan_attack_freq=1):\n",
    "    turns, hps = -1, [np.full(num_heros, 100), 1000000]\n",
    "    while (num_heros := ((hps := [np.clip(hps[0], 0, 100), hps[1]])[0] > 0).sum(), turns := turns + 1)[0]:\n",
    "        if (hps := [hps[0] - 20 * (desperate := hps[0] >= 60) + (alive := hps[0] > 0) * (heal := alive & (hps[0] <= 20)).sum(), hps[1] - desperate.sum() * 150 - (~desperate & ~heal & alive).sum() * 100])[1] <= 0:\n",
    "            break\n",
    "        for i in (([3, 1] if (satan_attack_freq * turns % 2) else [1, 3]) * (satan_attack_freq // 2 + 1))[:satan_attack_freq]: hps[0][np.where(hps[0] > 0)[0][:i]] -= (satan_base_power if i == 1 else satan_base_power // 2)\n",
    "    return num_heros, turns\n",
    "print(battle())\n",
    "print(battle(100, 80, 1))\n",
    "print(battle(200, 80, 3))\n",
    "print(battle(500, 100, 3))\n",
    "print(battle(1000, 200, 5))"
   ]
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