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+# Advent of Code 2019 
+Solutions to [Advent of Code 2019](https://adventofcode.com/2019) in Python 3.
+
+## Usage
+To solve all puzzles with implemented solution run 
+```console
+foo@bar:~$ python3 main.py 
+```
+or alternatively make the main program executable
+```console
+foo@bar:~$ chmod +x main.py
+foo@bar:~$ ./main.py
+foo
+```
+For other options see `./main.py -h`
+```console
+foo@bar:~$ ./main.py -h
+usage: main.py [-h] [-d DAY[-DAY]] [-i INPUT] [-t]
+
+Solves Advent of Code 2019 puzzles. The puzzles are available at
+https://adventofcode.com/2019/
+
+optional arguments:
+  -h, --help            show this help message and exit
+  -d DAY[-DAY], --day DAY[-DAY]
+                        solve puzzle of day DAY or of range DAY-DAY
+  -i INPUT, --input INPUT
+                        use INPUT as puzzle input
+  -t, --test            run tests
+```