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kill $(ps aux | grep './ngrok' | awk '{print $2}')

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perl -pi -e 's|execution_count": null|execution_count": 1|g' course-v4/nbs/*ipynb
nohup jupyter notebook --no-browser --allow-root --ip=0.0.0.0&

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git clone 'https://github.com/fastai/course-v4.git'
echo Setting up server...
curl -sL https://deb.nodesource.com/setup_10.x | sudo -E bash -q
sudo apt-get install -y nodejs -q
pip install jupyter jupyterlab --upgrade -q
pip install jupyter_contrib_nbextensions && jupyter contrib nbextension install -q
pip install -r /content/course-v4/requirements.txt -q
wget -q -c -nc https://bin.equinox.io/c/4VmDzA7iaHb/ngrok-stable-linux-amd64.zip
unzip -qq -n ngrok-stable-linux-amd64.zip

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from starlette.applications import Starlette
from starlette.responses import StreamingResponse, HTMLResponse
from starlette.routing import Route

from pathlib import Path

VIDEO_PATH = Path('videos')


def stream(request):

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INF = 10 ** 9

class City(object):
    __slots__ = ('city_id', 'x', 'y')

    def __init__(self, city_id, x, y):
        self.city_id = int(city_id)
        self.x = x
        self.y = y

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from heapq import heappop, heappush


class MinHeap(object):

    def __init__(self):
        self._items = []

    def push(self, item):
        heappush(self._items, item)