diff --git a/1/README.md b/01/README.md
similarity index 100%
rename from 1/README.md
rename to 01/README.md
diff --git a/1/day1-1.awk b/01/day1-1.awk
similarity index 100%
rename from 1/day1-1.awk
rename to 01/day1-1.awk
diff --git a/1/day1-2.sh b/01/day1-2.sh
similarity index 100%
rename from 1/day1-2.sh
rename to 01/day1-2.sh
diff --git a/1/input.txt b/01/input.txt
similarity index 100%
rename from 1/input.txt
rename to 01/input.txt
diff --git a/2/.gitignore b/02/.gitignore
similarity index 100%
rename from 2/.gitignore
rename to 02/.gitignore
diff --git a/2/README.md b/02/README.md
similarity index 100%
rename from 2/README.md
rename to 02/README.md
diff --git a/2/main.cpp b/02/main.cpp
similarity index 100%
rename from 2/main.cpp
rename to 02/main.cpp
diff --git a/2/scores.txt b/02/scores.txt
similarity index 100%
rename from 2/scores.txt
rename to 02/scores.txt
diff --git a/3/.gitignore b/03/.gitignore
similarity index 100%
rename from 3/.gitignore
rename to 03/.gitignore
diff --git a/3/README.md b/03/README.md
similarity index 100%
rename from 3/README.md
rename to 03/README.md
diff --git a/3/day3-1.vim b/03/day3-1.vim
similarity index 100%
rename from 3/day3-1.vim
rename to 03/day3-1.vim
diff --git a/3/main.c b/03/main.c
similarity index 100%
rename from 3/main.c
rename to 03/main.c
diff --git a/3/rucksack_items.txt b/03/rucksack_items.txt
similarity index 100%
rename from 3/rucksack_items.txt
rename to 03/rucksack_items.txt
diff --git a/4/.gitignore b/04/.gitignore
similarity index 100%
rename from 4/.gitignore
rename to 04/.gitignore
diff --git a/4/Makefile b/04/Makefile
similarity index 100%
rename from 4/Makefile
rename to 04/Makefile
diff --git a/4/README.md b/04/README.md
similarity index 100%
rename from 4/README.md
rename to 04/README.md
diff --git a/4/day4-by-ai.s b/04/day4-by-ai.s
similarity index 100%
rename from 4/day4-by-ai.s
rename to 04/day4-by-ai.s
diff --git a/4/day4.c b/04/day4.c
similarity index 100%
rename from 4/day4.c
rename to 04/day4.c
diff --git a/4/day4.s b/04/day4.s
similarity index 100%
rename from 4/day4.s
rename to 04/day4.s
diff --git a/4/prompt.md b/04/prompt.md
similarity index 100%
rename from 4/prompt.md
rename to 04/prompt.md
diff --git a/4/section-pairs.txt b/04/section-pairs.txt
similarity index 100%
rename from 4/section-pairs.txt
rename to 04/section-pairs.txt
diff --git a/5/README.md b/05/README.md
similarity index 100%
rename from 5/README.md
rename to 05/README.md
diff --git a/5/crates.txt b/05/crates.txt
similarity index 100%
rename from 5/crates.txt
rename to 05/crates.txt
diff --git a/5/day5.py b/05/day5.py
similarity index 100%
rename from 5/day5.py
rename to 05/day5.py
diff --git a/6/README.md b/06/README.md
similarity index 100%
rename from 6/README.md
rename to 06/README.md
diff --git a/6/broken-device.txt b/06/broken-device.txt
similarity index 100%
rename from 6/broken-device.txt
rename to 06/broken-device.txt
diff --git a/6/day6.css b/06/day6.css
similarity index 100%
rename from 6/day6.css
rename to 06/day6.css
diff --git a/6/day6.html b/06/day6.html
similarity index 100%
rename from 6/day6.html
rename to 06/day6.html
diff --git a/6/day6.js b/06/day6.js
similarity index 100%
rename from 6/day6.js
rename to 06/day6.js
diff --git a/7/README.md b/07/README.md
similarity index 100%
rename from 7/README.md
rename to 07/README.md
diff --git a/7/day7.sh b/07/day7.sh
similarity index 100%
rename from 7/day7.sh
rename to 07/day7.sh
diff --git a/7/output.txt b/07/output.txt
similarity index 100%
rename from 7/output.txt
rename to 07/output.txt
diff --git a/8/.gitignore b/08/.gitignore
similarity index 100%
rename from 8/.gitignore
rename to 08/.gitignore
diff --git a/8/README.md b/08/README.md
similarity index 100%
rename from 8/README.md
rename to 08/README.md
diff --git a/8/forest.txt b/08/forest.txt
similarity index 100%
rename from 8/forest.txt
rename to 08/forest.txt
diff --git a/8/main.cpp b/08/main.cpp
similarity index 100%
rename from 8/main.cpp
rename to 08/main.cpp
diff --git a/9/README.md b/09/README.md
similarity index 100%
rename from 9/README.md
rename to 09/README.md
diff --git a/9/index.php b/09/index.php
similarity index 100%
rename from 9/index.php
rename to 09/index.php
diff --git a/9/ropes.txt b/09/ropes.txt
similarity index 100%
rename from 9/ropes.txt
rename to 09/ropes.txt