#!/bin/bash

if [[ $# = 1 ]]; then
    day=$1
else
    day="$(date +%d | sed 's/^0//')"
fi

read -r answer < <(tail -n 1)

curl -D - "https://adventofcode.com/2020/day/$day/answer" -H "Cookie: session=$(cat cookie)" --data-raw "level=2&answer=$answer" | tee response${day}two | grep '<article>'