day_25/solution.ipynb

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    {
     "name": "stdout",
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     "text": [
      "20==1==12=0111=2--20\n"
     ]
    }
   ],
   "source": [
    "def f(w):\n",
    "    b = 1\n",
    "    o = 0\n",
    "    for c in w[::-1]:\n",
    "        o += ('=-012'.find(c)-2) * b\n",
    "        b *= 5\n",
    "    return o\n",
    "\n",
    "def g(w):\n",
    "    o = []\n",
    "    while w:\n",
    "        r = w % 5\n",
    "        o.append('012=-'[r])\n",
    "        w = w // 5 + (r > 2)\n",
    "    return ''.join(reversed(o)) if o else '0'\n",
    "\n",
    "\n",
    "print(g(sum(map(f, open(\"input/input.txt\").read().splitlines()))))\n"
   ]
  }
 ],
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