diff options
Diffstat (limited to '09')
| -rw-r--r-- | 09/Cargo.toml | 15 | ||||
| -rw-r--r-- | 09/input.txt | 2000 | ||||
| -rw-r--r-- | 09/src/part-1.rs | 59 | ||||
| -rw-r--r-- | 09/src/part-2.rs | 65 | ||||
| -rw-r--r-- | 09/test-1.txt | 8 | ||||
| -rw-r--r-- | 09/test-2.txt | 8 |
6 files changed, 2155 insertions, 0 deletions
diff --git a/09/Cargo.toml b/09/Cargo.toml new file mode 100644 index 0000000..100567b --- /dev/null +++ b/09/Cargo.toml @@ -0,0 +1,15 @@ +[package] +name = "day-09" +version = "0.1.0" +authors = ["Gard Spreemann <gspr@nonempty.org>"] +edition = "2021" + +[[bin]] +name = "part-1" +path = "src/part-1.rs" + +[[bin]] +name = "part-2" +path = "src/part-2.rs" + +[dependencies] diff --git a/09/input.txt b/09/input.txt new file mode 100644 index 0000000..68e6657 --- /dev/null +++ b/09/input.txt @@ -0,0 +1,2000 @@ +D 1 +L 2 +D 2 +L 1 +R 1 +D 1 +R 2 +U 1 +R 1 +D 2 +R 1 +L 2 +U 1 +D 2 +R 1 +L 2 +R 1 +U 2 +D 2 +L 1 +U 2 +R 2 +D 1 +R 2 +D 1 +U 2 +D 2 +L 1 +U 1 +R 1 +D 1 +U 1 +D 1 +U 2 +L 2 +R 1 +U 1 +R 2 +L 2 +U 2 +R 1 +L 1 +U 1 +L 2 +R 1 +D 1 +L 1 +D 2 +U 1 +D 1 +R 1 +L 2 +D 1 +R 2 +L 2 +U 1 +D 2 +R 2 +D 1 +U 1 +R 2 +D 1 +L 1 +U 2 +R 2 +D 1 +U 2 +R 1 +D 2 +R 1 +D 1 +U 2 +R 2 +U 1 +R 1 +U 1 +L 1 +U 2 +D 1 +R 2 +D 2 +R 2 +D 1 +L 2 +D 2 +L 1 +R 1 +U 1 +D 2 +L 2 +D 2 +L 1 +D 2 +R 1 +D 1 +R 2 +L 2 +R 2 +D 2 +R 1 +D 2 +R 2 +U 2 +L 2 +R 1 +U 1 +R 1 +U 1 +D 1 +U 1 +R 2 +L 1 +R 1 +D 2 +U 3 +R 1 +L 2 +D 1 +R 3 +U 1 +D 2 +R 1 +D 1 +R 2 +L 1 +R 2 +L 2 +D 3 +R 3 +D 1 +U 2 +D 2 +R 1 +D 2 +R 1 +L 3 +D 1 +L 1 +R 2 +D 3 +R 2 +D 3 +R 3 +L 2 +U 3 +D 3 +L 2 +R 3 +L 1 +U 1 +L 2 +D 2 +U 1 +D 2 +U 1 +D 2 +R 1 +U 1 +D 2 +U 1 +L 1 +R 2 +L 2 +D 3 +U 2 +L 3 +D 2 +U 1 +D 3 +L 1 +U 1 +D 2 +R 2 +U 1 +L 2 +D 3 +L 3 +D 3 +U 1 +R 1 +U 2 +D 1 +R 3 +L 1 +D 1 +U 3 +D 1 +L 2 +U 1 +L 3 +D 2 +L 2 +R 1 +L 3 +U 3 +R 3 +U 1 +R 2 +D 1 +L 3 +U 3 +D 3 +L 2 +D 1 +U 2 +D 2 +U 2 +R 3 +U 2 +L 1 +U 1 +R 2 +L 3 +D 3 +U 3 +R 1 +L 1 +U 1 +D 1 +U 2 +R 1 +D 3 +L 1 +R 3 +L 4 +D 3 +R 2 +U 3 +R 1 +L 4 +R 1 +L 3 +R 3 +U 2 +D 1 +L 3 +D 4 +U 4 +L 3 +U 4 +R 4 +L 1 +R 4 +D 1 +R 1 +L 3 +R 3 +L 1 +R 4 +D 2 +L 3 +D 2 +U 1 +R 3 +D 2 +L 3 +R 4 +L 3 +U 3 +D 3 +R 1 +D 2 +U 4 +L 1 +R 1 +L 4 +R 3 +U 1 +L 4 +R 1 +U 3 +R 1 +L 1 +U 3 +R 3 +U 2 +R 2 +L 4 +U 1 +R 1 +D 3 +L 2 +D 1 +L 3 +R 3 +D 3 +L 4 +U 2 +L 3 +U 4 +L 2 +U 2 +D 4 +L 3 +D 1 +U 2 +L 3 +R 4 +U 1 +L 4 +R 4 +L 3 +U 2 +D 4 +L 1 +R 3 +D 2 +L 3 +U 1 +L 3 +U 4 +R 2 +U 2 +R 1 +D 2 +L 4 +R 3 +D 2 +L 3 +U 3 +D 3 +L 1 +D 4 +R 3 +U 1 +R 3 +L 1 +U 3 +R 2 +D 3 +L 3 +U 3 +L 3 +D 5 +U 4 +L 5 +D 2 +R 1 +D 2 +U 5 +R 1 +U 2 +D 2 +R 4 +U 2 +L 3 +U 2 +R 5 +D 4 +L 3 +U 3 +D 1 +R 2 +L 3 +U 1 +R 5 +D 1 +U 2 +R 1 +U 3 +L 2 +U 5 +R 4 +D 5 +L 4 +D 4 +L 2 +U 4 +R 5 +L 1 +D 1 +R 2 +U 2 +D 5 +R 2 +U 4 +L 3 +D 2 +R 4 +L 1 +R 1 +L 2 +U 4 +D 4 +R 5 +D 3 +R 1 +D 4 +L 4 +U 5 +L 2 +U 2 +L 3 +R 4 +U 5 +L 4 +U 2 +D 1 +R 2 +U 4 +L 1 +U 3 +R 1 +U 5 +D 5 +U 4 +D 3 +L 3 +U 3 +D 2 +U 4 +R 3 +D 1 +U 5 +D 3 +R 1 +U 2 +R 1 +D 4 +R 4 +L 4 +U 1 +L 5 +R 3 +D 2 +U 2 +L 5 +R 1 +L 1 +U 3 +D 4 +R 5 +L 4 +D 5 +L 2 +U 1 +D 1 +U 3 +R 4 +D 4 +L 4 +U 3 +L 2 +D 2 +L 5 +U 1 +R 6 +U 4 +R 3 +D 2 +R 6 +D 2 +R 6 +L 3 +R 4 +L 3 +D 5 +U 2 +R 5 +L 5 +R 4 +U 6 +R 6 +D 1 +U 4 +D 4 +L 3 +D 2 +U 5 +R 2 +U 5 +D 2 +U 3 +R 2 +D 5 +R 2 +D 6 +R 1 +U 5 +D 2 +L 6 +U 2 +L 4 +R 6 +L 6 +D 6 +L 3 +D 5 +L 1 +R 5 +D 4 +L 4 +U 1 +R 3 +D 6 +R 6 +U 2 +R 4 +D 1 +R 4 +U 4 +L 6 +U 6 +D 6 +R 2 +D 2 +L 4 +R 6 +L 1 +U 5 +D 4 +U 4 +R 3 +U 1 +D 3 +R 6 +D 4 +U 5 +R 3 +D 5 +R 5 +D 4 +U 4 +D 3 +U 6 +L 1 +D 4 +U 6 +L 3 +R 3 +D 6 +U 4 +R 3 +L 3 +R 1 +D 6 +R 4 +U 2 +R 6 +L 3 +D 3 +L 4 +R 3 +L 4 +R 3 +U 4 +R 3 +D 4 +R 6 +D 2 +U 1 +D 2 +L 3 +D 4 +L 1 +D 5 +L 6 +U 4 +L 7 +R 6 +U 7 +R 7 +L 5 +D 1 +U 3 +R 6 +U 6 +R 2 +U 5 +R 4 +U 7 +R 1 +L 3 +D 7 +L 4 +D 6 +U 1 +L 1 +R 3 +D 2 +L 5 +R 1 +U 1 +L 1 +R 6 +L 6 +D 2 +U 3 +L 6 +R 6 +L 3 +D 3 +R 2 +L 1 +U 5 +R 6 +D 2 +L 5 +U 1 +D 4 +R 3 +L 6 +R 2 +L 4 +D 4 +R 5 +D 3 +R 2 +L 5 +U 7 +D 5 +L 3 +R 2 +D 5 +U 5 +D 2 +U 2 +L 2 +R 5 +L 2 +D 5 +R 3 +U 4 +R 4 +D 1 +L 6 +U 2 +R 7 +L 3 +U 4 +D 2 +R 5 +L 6 +R 7 +L 1 +U 5 +L 3 +U 7 +D 6 +R 3 +D 3 +U 7 +L 4 +R 2 +U 1 +L 1 +R 6 +D 5 +R 7 +U 4 +D 2 +R 2 +D 4 +L 1 +U 4 +D 2 +R 2 +D 5 +U 7 +D 1 +U 7 +R 3 +U 5 +L 1 +R 7 +L 2 +R 5 +U 5 +R 5 +D 4 +U 5 +L 7 +D 3 +R 5 +L 3 +R 1 +U 8 +L 4 +U 3 +D 4 +U 1 +L 2 +D 5 +L 5 +D 4 +U 3 +L 2 +R 3 +D 6 +L 4 +U 3 +R 1 +U 1 +D 3 +R 5 +D 4 +L 7 +U 7 +R 7 +L 6 +D 7 +U 5 +L 2 +U 4 +R 8 +L 4 +U 4 +R 5 +U 1 +R 1 +D 7 +R 6 +L 8 +R 1 +D 4 +U 5 +R 6 +L 3 +R 7 +L 4 +D 7 +U 8 +R 5 +D 5 +U 4 +L 3 +D 4 +U 1 +L 8 +R 8 +U 2 +L 5 +R 7 +D 5 +L 5 +D 3 +L 5 +U 4 +D 1 +U 6 +R 7 +D 5 +R 4 +D 6 +U 4 +L 5 +D 8 +U 5 +L 7 +D 1 +U 8 +R 3 +U 4 +R 5 +U 7 +R 6 +L 3 +U 4 +L 7 +R 5 +U 6 +L 2 +R 2 +U 7 +R 4 +D 2 +L 2 +D 6 +L 5 +D 5 +L 1 +R 5 +D 1 +U 5 +L 8 +R 3 +D 4 +R 2 +U 2 +L 5 +D 4 +U 7 +D 9 +R 9 +U 9 +R 3 +L 2 +D 8 +U 6 +L 1 +R 1 +D 4 +L 9 +R 9 +L 3 +U 4 +D 7 +U 9 +D 5 +R 8 +D 6 +R 9 +U 2 +R 2 +U 8 +R 5 +U 6 +L 8 +D 7 +L 2 +U 3 +R 3 +U 6 +L 5 +R 4 +D 6 +U 6 +R 6 +D 5 +U 5 +D 6 +L 4 +D 2 +U 6 +L 8 +U 3 +D 6 +U 1 +L 7 +D 6 +R 3 +D 7 +U 6 +D 4 +U 5 +R 3 +D 7 +L 5 +U 6 +L 6 +R 2 +D 7 +L 7 +U 5 +D 9 +R 6 +L 9 +R 1 +L 6 +U 5 +R 4 +U 7 +L 2 +U 5 +L 9 +U 3 +R 2 +L 5 +R 2 +U 6 +L 3 +D 7 +R 9 +D 3 +L 4 +R 2 +D 8 +L 6 +D 9 +L 5 +D 1 +R 8 +D 4 +U 5 +L 7 +D 2 +R 2 +L 7 +D 6 +L 7 +R 1 +D 4 +U 3 +D 3 +U 8 +R 8 +L 3 +D 8 +U 7 +R 4 +D 9 +L 3 +U 10 +L 4 +D 4 +R 7 +U 1 +L 10 +U 10 +R 9 +U 3 +L 3 +R 1 +D 10 +L 4 +U 9 +L 4 +U 7 +L 8 +R 7 +D 1 +U 3 +L 3 +U 2 +R 4 +U 5 +D 9 +L 5 +U 10 +L 2 +U 1 +L 7 +D 9 +L 8 +R 10 +D 7 +U 9 +L 4 +U 10 +L 3 +U 1 +D 1 +L 1 +D 6 +U 8 +R 8 +L 6 +U 9 +L 3 +U 6 +R 6 +U 3 +R 7 +U 2 +D 4 +L 4 +R 8 +D 3 +R 8 +U 2 +R 3 +D 6 +U 4 +R 9 +L 4 +D 4 +L 6 +R 2 +D 10 +L 7 +R 9 +L 7 +D 8 +R 2 +D 2 +U 9 +R 2 +U 1 +R 10 +U 1 +D 2 +U 10 +D 10 +U 5 +R 3 +U 5 +R 10 +L 3 +R 5 +U 5 +L 4 +D 3 +L 7 +D 3 +U 10 +R 7 +L 3 +D 2 +L 1 +D 1 +L 7 +R 2 +L 10 +D 6 +R 4 +L 8 +R 9 +D 5 +L 2 +D 4 +R 1 +L 4 +R 8 +D 5 +R 10 +D 1 +L 10 +D 11 +L 10 +R 4 +L 3 +D 1 +U 4 +L 9 +D 6 +U 2 +R 4 +L 2 +U 5 +D 1 +R 6 +L 5 +U 7 +D 2 +R 5 +D 9 +R 11 +U 9 +D 9 +R 2 +L 9 +D 4 +U 7 +L 10 +D 7 +U 4 +D 1 +U 4 +D 10 +L 8 +D 3 +L 8 +D 8 +R 7 +D 10 +R 5 +U 1 +L 11 +D 2 +L 11 +U 4 +L 8 +D 10 +U 3 +D 11 +R 10 +L 1 +D 2 +U 11 +L 4 +U 2 +L 6 +D 7 +R 10 +L 2 +D 7 +R 9 +U 6 +D 5 +R 9 +U 1 +D 3 +R 8 +D 7 +L 3 +D 8 +U 4 +D 4 +R 8 +L 7 +R 1 +D 3 +U 7 +D 4 +L 10 +R 1 +D 6 +R 1 +L 5 +D 2 +L 9 +R 1 +U 5 +D 4 +U 11 +L 6 +R 11 +D 11 +R 6 +U 9 +R 1 +L 5 +U 3 +R 10 +L 8 +R 6 +L 2 +R 8 +D 11 +L 5 +R 3 +L 1 +R 3 +L 8 +R 10 +U 2 +R 2 +D 7 +L 9 +U 2 +L 8 +D 3 +U 1 +L 11 +D 1 +U 6 +L 2 +R 7 +D 5 +R 1 +D 11 +U 12 +D 10 +L 11 +U 3 +D 10 +L 6 +U 3 +D 12 +R 4 +D 9 +R 2 +U 12 +R 11 +L 2 +R 7 +L 11 +U 12 +R 12 +U 1 +R 2 +D 8 +R 10 +U 2 +D 8 +U 8 +D 5 +U 10 +R 4 +U 8 +D 4 +R 8 +D 8 +R 2 +U 4 +L 10 +D 2 +L 10 +R 2 +D 9 +U 6 +L 2 +D 10 +L 2 +D 11 +R 11 +U 2 +L 6 +D 3 +U 3 +R 4 +U 9 +L 9 +R 8 +D 5 +L 9 +U 8 +L 11 +D 8 +R 12 +U 1 +D 1 +U 7 +L 11 +U 2 +L 12 +R 11 +U 8 +R 12 +U 11 +L 7 +U 5 +L 4 +R 4 +D 1 +U 6 +D 7 +U 5 +R 5 +U 10 +D 2 +R 9 +L 12 +D 9 +U 6 +L 11 +D 7 +L 6 +D 10 +L 9 +D 11 +R 7 +D 10 +L 1 +R 9 +D 10 +L 1 +U 1 +L 13 +R 10 +D 9 +L 9 +U 7 +L 10 +R 1 +U 12 +R 13 +U 8 +L 9 +U 5 +L 11 +D 11 +U 8 +R 2 +D 2 +R 7 +D 3 +L 3 +R 2 +L 6 +U 11 +L 6 +U 8 +L 11 +U 12 +L 13 +D 4 +L 8 +U 11 +D 9 +U 11 +D 10 +U 4 +D 9 +L 12 +D 6 +L 11 +U 11 +L 1 +D 6 +R 12 +U 9 +D 1 +L 4 +R 9 +L 13 +R 10 +D 9 +L 2 +R 3 +D 10 +L 13 +R 3 +L 8 +R 8 +L 1 +R 5 +L 12 +D 10 +R 6 +U 7 +R 11 +U 11 +R 10 +D 9 +R 12 +D 8 +U 6 +L 8 +D 6 +L 10 +R 2 +L 2 +D 12 +U 12 +R 11 +L 8 +U 2 +R 2 +L 11 +U 11 +L 7 +D 2 +U 2 +L 9 +D 4 +R 2 +U 7 +D 3 +R 1 +D 6 +U 13 +R 11 +D 1 +U 4 +R 9 +D 7 +L 12 +U 12 +L 10 +U 9 +L 1 +D 1 +U 6 +L 1 +D 13 +U 14 +L 2 +D 6 +U 8 +D 8 +L 9 +D 1 +R 11 +D 6 +L 8 +R 11 +U 4 +L 5 +R 5 +D 10 +U 10 +R 7 +D 7 +L 8 +U 9 +R 1 +L 5 +D 4 +L 13 +D 4 +R 14 +D 13 +R 9 +L 13 +R 7 +L 14 +R 12 +D 1 +U 8 +L 10 +U 7 +D 9 +U 7 +D 13 +L 1 +R 1 +D 14 +L 9 +U 5 +R 7 +U 2 +L 11 +D 5 +U 7 +D 1 +L 13 +U 14 +L 1 +D 3 +R 3 +D 1 +L 3 +U 4 +R 14 +U 11 +R 4 +L 13 +U 3 +R 8 +D 5 +U 8 +L 6 +R 14 +L 3 +D 2 +L 5 +U 11 +R 8 +L 11 +U 8 +D 11 +U 14 +R 14 +L 4 +D 10 +R 11 +U 1 +D 4 +U 11 +D 5 +L 5 +R 14 +U 12 +L 1 +D 4 +R 11 +L 5 +R 9 +U 9 +D 2 +U 12 +D 2 +R 8 +U 6 +L 11 +U 8 +L 6 +U 9 +L 5 +U 3 +D 10 +R 10 +D 6 +U 1 +R 13 +U 5 +R 8 +U 11 +L 11 +D 10 +R 11 +U 2 +D 3 +R 10 +D 2 +L 9 +R 7 +L 8 +U 1 +R 6 +L 3 +D 10 +U 14 +D 4 +U 7 +L 6 +R 8 +U 15 +D 14 +U 5 +D 15 +U 2 +D 4 +L 11 +U 8 +L 10 +U 15 +R 8 +U 14 +D 6 +R 9 +L 15 +R 9 +L 11 +R 3 +D 2 +U 10 +L 12 +D 2 +L 5 +D 1 +R 8 +U 7 +L 7 +D 7 +L 15 +D 11 +U 3 +L 4 +U 10 +L 14 +U 10 +D 10 +U 11 +D 1 +L 3 +R 11 +L 3 +U 10 +L 2 +D 8 +R 8 +L 12 +D 15 +U 10 +L 14 +R 4 +L 9 +R 11 +U 10 +R 7 +D 13 +U 11 +D 10 +R 3 +U 6 +R 9 +L 15 +R 11 +D 6 +R 14 +L 7 +D 7 +L 3 +D 13 +U 10 +R 14 +U 2 +D 4 +U 1 +R 1 +D 8 +R 12 +L 15 +R 4 +L 15 +U 13 +D 12 +L 8 +D 1 +R 3 +U 11 +R 3 +U 2 +R 4 +D 15 +U 4 +L 6 +D 6 +L 9 +D 2 +L 15 +R 5 +U 2 +R 7 +D 7 +U 15 +L 4 +D 7 +R 9 +D 11 +R 8 +L 4 +R 6 +L 11 +U 16 +L 10 +U 10 +L 11 +U 9 +R 8 +U 13 +R 13 +L 5 +R 8 +L 12 +U 11 +L 4 +D 10 +R 2 +U 13 +R 4 +L 15 +D 15 +L 15 +R 16 +L 7 +R 14 +D 5 +L 16 +U 6 +D 3 +L 13 +D 8 +L 11 +U 13 +L 9 +U 6 +L 4 +U 11 +R 1 +L 13 +R 11 +L 13 +R 13 +L 9 +D 15 +R 1 +L 15 +R 14 +L 14 +U 7 +L 1 +R 6 +D 16 +L 2 +R 12 +L 4 +D 12 +R 8 +U 9 +D 10 +R 1 +L 2 +D 5 +L 3 +R 15 +L 8 +D 1 +L 1 +D 8 +U 13 +R 1 +L 2 +D 1 +R 3 +L 6 +U 12 +L 4 +D 13 +U 2 +L 4 +D 10 +R 16 +D 1 +U 1 +L 11 +D 8 +L 12 +R 8 +L 5 +R 1 +D 12 +R 2 +D 7 +U 16 +D 11 +L 15 +R 4 +U 4 +D 4 +U 4 +L 17 +U 3 +D 8 +U 1 +L 1 +U 4 +L 7 +U 9 +L 13 +D 10 +L 2 +U 7 +L 13 +D 16 +U 6 +L 10 +D 16 +L 8 +U 10 +L 6 +U 16 +L 5 +U 4 +R 9 +D 12 +R 1 +U 14 +L 14 +R 16 +D 5 +L 16 +R 14 +U 10 +R 4 +U 9 +L 15 +D 4 +U 15 +L 11 +R 14 +L 10 +D 14 +L 10 +D 12 +R 2 +D 3 +R 1 +U 1 +L 17 +U 9 +D 13 +R 7 +D 7 +U 13 +D 1 +R 14 +U 10 +R 16 +L 17 +R 7 +D 17 +U 11 +L 2 +U 16 +L 8 +U 13 +R 17 +U 5 +L 7 +R 3 +D 17 +L 10 +U 9 +D 16 +R 3 +U 5 +L 15 +R 16 +D 11 +U 9 +L 3 +R 14 +D 4 +L 4 +U 12 +D 9 +U 10 +D 15 +L 12 +R 6 +D 4 +L 14 +D 5 +L 4 +U 7 +R 15 +D 6 +L 15 +U 14 +D 10 +L 3 +D 9 +L 15 +R 9 +U 1 +L 4 +D 15 +U 12 +D 9 +R 8 +D 14 +R 15 +D 7 +U 18 +L 5 +U 6 +L 6 +D 10 +L 18 +R 3 +L 11 +D 10 +L 13 +U 13 +L 13 +R 3 +L 1 +U 3 +D 7 +L 9 +R 6 +U 18 +R 18 +U 15 +R 9 +U 4 +R 12 +L 12 +D 6 +U 10 +D 13 +L 6 +R 13 +L 13 +D 12 +U 4 +D 15 +L 12 +D 10 +U 12 +R 8 +L 13 +D 11 +L 13 +U 12 +D 5 +U 12 +R 10 +L 9 +U 13 +R 7 +D 2 +L 6 +U 13 +D 15 +R 3 +U 4 +D 5 +L 2 +D 10 +U 7 +L 2 +D 5 +L 5 +D 11 +R 5 +U 18 +L 9 +D 8 +U 12 +R 3 +U 8 +R 14 +D 1 +R 4 +L 5 +D 10 +R 18 +D 2 +R 9 +L 14 +U 4 +R 15 +D 4 +R 2 +L 4 +U 13 +R 6 +U 18 +D 4 +U 7 +L 15 +D 1 +L 6 +D 3 +U 15 +L 17 +U 15 +R 14 +L 9 +U 5 +L 4 +U 13 +R 5 +D 17 +U 17 +L 15 +U 14 +R 5 +L 1 +R 9 +U 8 +R 15 +U 18 +L 12 +R 13 +D 15 +R 5 +L 11 +R 5 +U 12 +R 8 +L 6 +R 1 +L 10 +U 17 +L 16 +U 12 +L 14 +D 16 +U 13 +D 18 +L 5 +U 16 +L 11 +D 15 +U 2 +L 9 +D 5 +L 17 +D 17 +L 4 +D 4 +L 19 +R 6 +D 6 +U 18 +R 16 +U 12 +D 2 +L 4 +U 19 +R 6 +U 1 +D 15 +R 13 +U 18 +D 12 +L 9 +U 1 +R 13 +D 18 +L 4 +D 17 +L 9 +D 8 +U 3 +D 5 +R 7 +L 16 +U 3 +L 1 +D 13 +R 17 +D 8 +R 9 +U 17 +L 2 +U 17 +D 16 +L 8 +R 9 +D 7 +L 16 +R 10 +L 16 +D 10 +L 15 +U 17 +L 2 +U 10 +D 16 +R 1 +L 2 +D 4 +R 13 +L 12 +D 8 +U 10 +L 6 +D 14 +L 6 +D 11 +R 1 +D 10 +L 18 +D 12 +R 14 +L 3 +D 7 +L 12 +R 19 +U 5 +R 19 +D 3 +L 15 +U 13 diff --git a/09/src/part-1.rs b/09/src/part-1.rs new file mode 100644 index 0000000..f61c09d --- /dev/null +++ b/09/src/part-1.rs @@ -0,0 +1,59 @@ +use std::collections::{HashSet}; +use std::io::{BufRead}; + + +fn main() { + let stdin = std::io::stdin(); + let mut handle = stdin.lock(); + + let mut buf: Vec<u8> = Vec::new(); + let mut seen: HashSet<[isize; 2]> = HashSet::new(); + let mut head_pos: [isize; 2] = [0; 2]; + let mut tail_pos: [isize; 2] = head_pos.clone(); + seen.insert(tail_pos.clone()); + + loop { + buf.clear(); + let num_bytes = handle.read_until(b'\n', &mut buf).expect("IO error"); + if num_bytes == 0 { break; } + + if buf[buf.len() - 1] == b'\n' { buf.pop(); } + + let direction = buf[0]; + let num_steps: usize = std::str::from_utf8(& buf[2..]).expect("Malformed input") + .parse().expect("Malformed input"); + + for dir in std::iter::repeat(direction).take(num_steps) { + match dir { + b'L' => head_pos[0] -= 1, + b'R' => head_pos[0] += 1, + b'U' => head_pos[1] += 1, + b'D' => head_pos[1] -= 1, + _ => panic!("Malformed input") + }; + let delta: [isize; 2] = { + let mut ret: [isize; 2] = [0; 2]; + for i in 0..2 { ret[i] = head_pos[i] - tail_pos[i]; } + ret + }; + if delta[0].abs() == 2 { + tail_pos[0] += delta[0].signum(); + if delta[1].abs() == 1 { + tail_pos[1] += delta[1].signum(); + } + seen.insert(tail_pos.clone()); + } + else if delta[1].abs() == 2 { + tail_pos[1] += delta[1].signum(); + if delta[0].abs() == 1 { + tail_pos[0] += delta[0].signum(); + } + seen.insert(tail_pos.clone()); + } + } + } + + println!("{}", seen.len()); + + +} diff --git a/09/src/part-2.rs b/09/src/part-2.rs new file mode 100644 index 0000000..1773d2e --- /dev/null +++ b/09/src/part-2.rs @@ -0,0 +1,65 @@ +// Ugh, weird motion in this grid world! + +use std::collections::{HashSet}; +use std::io::{BufRead}; + +const NUM_SEGMENTS: usize = 10; + +type Pos = [isize; 2]; + +fn main() { + let stdin = std::io::stdin(); + let mut handle = stdin.lock(); + + let mut buf: Vec<u8> = Vec::new(); + let mut seen: HashSet<[isize; 2]> = HashSet::new(); + let mut positions: [Pos; NUM_SEGMENTS] = [[0; 2]; NUM_SEGMENTS]; + seen.insert(positions[NUM_SEGMENTS-1].clone()); + + loop { + buf.clear(); + let num_bytes = handle.read_until(b'\n', &mut buf).expect("IO error"); + if num_bytes == 0 { break; } + + if buf[buf.len() - 1] == b'\n' { buf.pop(); } + + let direction = buf[0]; + let num_steps: usize = std::str::from_utf8(& buf[2..]).expect("Malformed input") + .parse().expect("Malformed input"); + + for dir in std::iter::repeat(direction).take(num_steps) { + match dir { + b'L' => positions[0][0] -= 1, + b'R' => positions[0][0] += 1, + b'U' => positions[0][1] += 1, + b'D' => positions[0][1] -= 1, + _ => panic!("Malformed input") + }; + + for i in 1..NUM_SEGMENTS { + let delta: [isize; 2] = { + let mut ret: [isize; 2] = [0; 2]; + for d in 0..2 { ret[d] = positions[i-1][d] - positions[i][d]; } + ret + }; + if delta[0].abs() == 2 { + positions[i][0] += delta[0].signum(); + if delta[1].abs() == 1 { + positions[i][1] += delta[1].signum(); + } + } + if delta[1].abs() == 2 { + positions[i][1] += delta[1].signum(); + if delta[0].abs() == 1 { + positions[i][0] += delta[0].signum(); + } + } + } + seen.insert(positions[NUM_SEGMENTS-1].clone()); + } + } + + println!("{}", seen.len()); + + +} diff --git a/09/test-1.txt b/09/test-1.txt new file mode 100644 index 0000000..9874df2 --- /dev/null +++ b/09/test-1.txt @@ -0,0 +1,8 @@ +R 4 +U 4 +L 3 +D 1 +R 4 +D 1 +L 5 +R 2 diff --git a/09/test-2.txt b/09/test-2.txt new file mode 100644 index 0000000..60bd43b --- /dev/null +++ b/09/test-2.txt @@ -0,0 +1,8 @@ +R 5 +U 8 +L 8 +D 3 +R 17 +D 10 +L 25 +U 20 |