Day 2 done
This commit is contained in:
parent
5dd471795a
commit
b2802d8f0a
1
day2/.gitignore
vendored
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1
day2/.gitignore
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target
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54
day2/Cargo.lock
generated
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54
day2/Cargo.lock
generated
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# This file is automatically @generated by Cargo.
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# It is not intended for manual editing.
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version = 3
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[[package]]
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name = "aho-corasick"
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version = "1.1.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "b2969dcb958b36655471fc61f7e416fa76033bdd4bfed0678d8fee1e2d07a1f0"
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dependencies = [
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"memchr",
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]
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[[package]]
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name = "day2"
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version = "0.1.0"
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dependencies = [
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"regex",
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]
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[[package]]
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name = "memchr"
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version = "2.6.4"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "f665ee40bc4a3c5590afb1e9677db74a508659dfd71e126420da8274909a0167"
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[[package]]
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name = "regex"
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version = "1.10.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "380b951a9c5e80ddfd6136919eef32310721aa4aacd4889a8d39124b026ab343"
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dependencies = [
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"aho-corasick",
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"memchr",
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"regex-automata",
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"regex-syntax",
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]
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[[package]]
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name = "regex-automata"
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version = "0.4.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "5f804c7828047e88b2d32e2d7fe5a105da8ee3264f01902f796c8e067dc2483f"
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dependencies = [
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"aho-corasick",
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"memchr",
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"regex-syntax",
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]
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[[package]]
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name = "regex-syntax"
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version = "0.8.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "c08c74e62047bb2de4ff487b251e4a92e24f48745648451635cec7d591162d9f"
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9
day2/Cargo.toml
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9
day2/Cargo.toml
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[package]
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name = "day2"
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version = "0.1.0"
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edition = "2021"
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# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
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[dependencies]
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regex = "1.10.2"
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100
day2/input
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100
day2/input
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Game 1: 2 red, 2 green; 1 red, 1 green, 2 blue; 3 blue, 3 red, 3 green; 1 blue, 3 green, 7 red; 5 red, 3 green, 1 blue
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Game 2: 5 green, 4 red, 7 blue; 7 red, 4 green, 4 blue; 8 green, 11 blue, 4 red; 2 red, 18 blue, 3 green; 7 red, 15 blue
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Game 3: 2 green, 4 blue; 2 red, 2 green; 6 red, 1 green; 2 red, 1 green; 2 green; 5 blue, 5 red
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Game 4: 10 red, 7 green, 10 blue; 8 red, 2 green; 9 green, 6 red, 5 blue; 8 green, 2 blue, 4 red; 5 green, 9 blue; 10 red, 1 green, 9 blue
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Game 5: 10 blue, 7 green, 2 red; 2 blue, 4 red; 2 green, 9 blue, 8 red
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Game 6: 3 green, 8 red; 1 blue, 11 red, 2 green; 2 green, 15 red, 8 blue; 13 red, 6 blue, 3 green
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Game 7: 4 green, 10 red, 7 blue; 6 red, 9 blue, 9 green; 2 red, 1 blue, 6 green
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Game 8: 1 red, 3 blue, 2 green; 7 green, 2 blue; 10 green, 1 red, 2 blue; 1 red
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Game 9: 4 red, 3 green, 11 blue; 6 red, 4 green; 15 red, 7 blue, 7 green
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Game 10: 7 red, 1 blue, 5 green; 11 red, 7 green, 1 blue; 2 green, 4 blue, 13 red
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Game 11: 2 blue, 13 red, 12 green; 6 green, 5 red, 4 blue; 5 red, 11 green
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Game 12: 7 blue, 3 red, 11 green; 5 red, 1 blue, 8 green; 9 green, 7 blue, 8 red
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Game 13: 1 blue, 12 red; 9 red, 1 green, 1 blue; 8 red; 1 green, 4 red; 2 red
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Game 14: 6 blue, 5 green, 1 red; 12 blue, 4 red, 9 green; 7 green, 6 red; 8 blue, 10 green, 4 red; 8 green, 7 red
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Game 15: 15 blue, 10 red, 3 green; 9 green, 6 red, 11 blue; 3 green, 8 red, 5 blue; 12 green, 6 red, 16 blue; 11 red, 9 green, 15 blue
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Game 16: 12 green, 2 red, 7 blue; 9 red, 6 blue, 9 green; 7 green, 10 blue; 9 blue, 3 red, 9 green; 5 blue, 1 red
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Game 17: 4 green, 3 red, 11 blue; 8 green, 16 blue; 10 green, 12 blue, 2 red; 8 green, 2 red, 15 blue
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Game 18: 6 red, 8 green; 16 blue; 4 blue, 6 red; 16 blue, 10 green, 3 red; 12 blue, 15 green; 9 blue, 1 green, 4 red
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Game 19: 9 green, 9 red; 4 green, 13 red, 2 blue; 2 blue, 4 green, 3 red; 5 green, 3 blue, 3 red
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Game 20: 1 green, 6 red, 12 blue; 3 green, 8 red, 11 blue; 7 green, 5 red, 2 blue; 5 green, 14 blue, 5 red
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Game 21: 5 green, 1 blue, 13 red; 3 green, 13 red, 2 blue; 8 green, 12 red, 3 blue; 3 blue, 6 green, 9 red; 1 blue, 4 green, 13 red
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Game 22: 8 green, 14 red, 15 blue; 10 blue, 8 red, 14 green; 15 green, 15 blue, 6 red; 14 green, 10 blue, 7 red
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Game 23: 18 red, 9 green; 3 green, 1 blue, 17 red; 10 red, 16 green
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Game 24: 1 red, 2 blue, 4 green; 2 red, 5 blue, 3 green; 5 green, 5 blue; 8 blue, 1 red, 3 green; 2 green, 2 red, 6 blue; 2 green, 4 blue
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Game 25: 5 blue, 4 red, 1 green; 4 blue, 8 red, 1 green; 6 red, 5 blue; 8 red; 9 red, 3 blue; 1 green, 3 blue, 5 red
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Game 26: 20 blue, 4 red, 15 green; 10 red, 2 green, 12 blue; 7 blue, 15 green, 9 red; 1 red, 10 green, 5 blue; 14 green, 7 red, 15 blue
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Game 27: 17 red, 6 green; 6 green, 5 red, 3 blue; 4 green, 4 red, 5 blue; 3 green, 3 blue, 16 red; 4 blue, 5 green, 15 red
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Game 28: 5 blue, 6 green, 1 red; 13 blue; 1 red, 9 blue, 10 green
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Game 29: 1 red, 10 blue; 9 green, 6 blue, 3 red; 17 green, 1 red, 9 blue; 7 blue, 1 red; 1 red, 15 blue, 9 green; 7 green, 1 red, 4 blue
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Game 30: 3 red, 11 blue, 2 green; 11 green, 8 blue, 8 red; 1 red, 3 green; 19 green, 11 blue
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Game 31: 19 green, 6 red; 4 green, 10 red; 12 green, 1 blue
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Game 32: 4 green, 3 blue, 10 red; 4 red, 6 blue, 3 green; 10 red, 5 blue
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Game 33: 2 blue, 5 green, 5 red; 4 blue, 2 green, 4 red; 13 red, 2 green; 7 blue, 4 green, 2 red; 19 blue, 5 green, 11 red; 4 green, 18 blue, 1 red
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Game 34: 6 blue, 9 red, 7 green; 7 green, 6 red, 12 blue; 3 red, 6 green, 16 blue; 3 green, 15 blue, 13 red; 2 green, 16 blue, 3 red
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Game 35: 4 green; 3 green, 4 red, 1 blue; 6 red, 12 green, 2 blue
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Game 36: 1 blue, 8 red, 3 green; 10 red, 5 green; 1 green, 8 red; 4 green, 1 blue, 11 red
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Game 37: 2 red, 4 blue, 5 green; 2 green, 1 blue, 3 red; 8 green, 3 red, 4 blue; 1 blue, 8 green, 2 red
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Game 38: 11 green, 4 blue; 2 blue, 11 green, 1 red; 12 green, 7 blue, 1 red; 7 blue, 10 green, 1 red; 13 green, 2 red; 1 red, 7 blue, 2 green
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Game 39: 7 green, 1 red, 15 blue; 8 red, 7 blue; 15 red, 5 green, 6 blue
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Game 40: 2 green, 12 blue, 15 red; 2 green, 6 red; 5 green, 9 red; 9 blue, 12 red; 4 green, 12 red, 12 blue; 12 red, 8 blue, 2 green
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Game 41: 9 blue, 6 red, 3 green; 6 red, 2 green, 9 blue; 1 blue, 11 red
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Game 42: 4 red, 3 blue, 13 green; 5 blue, 11 red, 15 green; 3 red, 12 green; 2 red, 6 blue, 3 green
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Game 43: 2 green, 7 red; 11 red, 18 green, 1 blue; 13 red, 12 green, 1 blue; 15 red; 5 red, 19 green; 15 green, 5 red
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Game 44: 2 red, 5 green, 7 blue; 5 green, 8 blue; 8 red, 8 green; 1 green, 1 red, 6 blue; 1 blue, 1 red
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Game 45: 3 red, 3 green, 7 blue; 12 red, 17 blue; 7 green, 8 red, 14 blue; 9 green, 10 red, 13 blue; 15 green, 16 blue, 4 red
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Game 46: 2 blue, 5 green; 4 red, 7 green; 15 red, 7 green
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Game 47: 5 red, 9 green, 4 blue; 1 red, 9 green, 11 blue; 8 green, 1 red; 4 red, 4 blue, 3 green; 10 blue, 14 green
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Game 48: 1 red, 14 blue, 11 green; 3 blue, 8 green; 5 green, 5 blue; 5 blue, 1 red, 8 green; 10 green, 2 red, 6 blue
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Game 49: 11 blue, 5 red, 3 green; 7 blue, 12 red, 4 green; 9 green, 6 red; 4 green, 3 blue, 10 red
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Game 50: 3 red, 8 blue, 13 green; 13 blue, 13 green; 3 green, 10 blue, 1 red; 12 green, 15 blue; 12 blue, 3 red, 8 green; 5 blue, 5 red, 4 green
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Game 51: 3 green, 1 blue; 1 red; 1 green, 7 blue
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Game 52: 3 red, 4 blue; 4 blue, 1 green, 2 red; 1 green, 3 red; 5 red, 1 green; 1 blue, 1 red, 1 green
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Game 53: 5 red, 17 green, 4 blue; 15 red, 14 blue, 1 green; 9 blue, 5 green; 3 blue, 5 red, 9 green; 1 green, 15 blue, 10 red; 16 green, 10 blue
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Game 54: 4 blue, 7 red, 1 green; 7 green, 8 red, 6 blue; 14 green, 1 blue, 5 red
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Game 55: 4 blue, 4 green, 1 red; 1 green; 3 red
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Game 56: 3 green, 1 red, 7 blue; 1 blue, 2 red, 3 green; 2 green, 9 red; 14 red, 8 blue, 1 green; 5 red, 13 blue; 6 red, 3 blue
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Game 57: 15 green, 5 red, 5 blue; 13 green, 13 blue, 12 red; 18 green, 5 blue, 8 red; 7 green, 7 blue, 13 red
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Game 58: 4 red, 2 blue, 6 green; 4 red, 3 green, 14 blue; 9 green, 3 red; 3 red, 5 blue, 11 green
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Game 59: 2 red, 6 green, 1 blue; 5 blue, 1 green, 4 red; 2 red, 7 green, 6 blue; 3 green, 6 blue; 1 blue, 6 green
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Game 60: 4 red, 9 green, 3 blue; 2 blue, 8 green, 6 red; 2 red, 8 green, 3 blue; 8 green, 2 red, 2 blue
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Game 61: 12 red, 4 blue, 3 green; 1 blue, 2 green; 2 red, 2 green, 3 blue
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Game 62: 4 red, 6 green, 14 blue; 12 green, 2 red, 4 blue; 5 blue, 5 red, 7 green
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Game 63: 1 green, 5 red; 5 red, 1 blue, 1 green; 1 blue
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Game 64: 6 red, 9 green, 4 blue; 8 red, 13 green; 3 blue, 8 red, 11 green; 5 red, 1 blue, 2 green; 3 blue, 7 red, 1 green
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Game 65: 15 green, 10 red, 1 blue; 1 blue, 2 red, 4 green; 10 blue, 4 green
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Game 66: 13 blue, 6 red, 2 green; 13 green; 10 blue, 8 green; 7 red, 10 blue, 11 green; 10 green, 1 red, 8 blue
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Game 67: 5 blue, 4 green, 1 red; 2 green, 4 blue, 1 red; 7 green, 2 blue, 1 red; 1 blue, 1 green
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Game 68: 2 green, 12 blue, 3 red; 5 red, 14 blue, 2 green; 6 red, 14 blue; 10 blue, 6 red, 2 green
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Game 69: 7 blue, 1 red, 12 green; 10 blue, 11 green, 6 red; 4 red, 10 green, 7 blue
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Game 70: 4 blue; 6 red, 2 green, 11 blue; 4 green, 3 blue, 2 red; 14 blue, 2 red, 4 green
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Game 71: 5 red, 17 blue; 9 blue, 11 red, 1 green; 19 blue, 6 red; 4 red, 2 blue
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Game 72: 2 green, 5 red, 1 blue; 4 green, 4 red; 4 green, 2 red; 2 blue, 2 green; 1 blue, 1 green, 5 red
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Game 73: 4 red, 3 blue, 1 green; 10 red, 2 blue, 3 green; 14 red, 1 green, 2 blue; 1 blue; 3 green, 9 red, 6 blue; 11 red, 7 blue, 2 green
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Game 74: 1 red, 5 blue, 10 green; 2 red, 9 blue, 9 green; 8 green, 2 red, 4 blue; 10 blue, 9 green; 12 green, 3 red, 5 blue
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Game 75: 3 red, 13 blue, 6 green; 3 green, 1 red; 9 green, 1 blue, 5 red; 5 green, 13 red, 4 blue; 13 green, 2 blue, 10 red; 9 green, 3 red, 10 blue
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Game 76: 14 green, 2 red, 16 blue; 2 blue, 1 red, 7 green; 14 green, 9 blue, 8 red
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Game 77: 1 green, 1 blue; 1 green; 3 red, 3 blue, 1 green; 3 green, 3 red; 1 red, 2 blue
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Game 78: 4 red, 13 green; 17 green, 1 blue, 2 red; 8 red, 14 green
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Game 79: 4 green, 10 red, 6 blue; 5 blue, 3 red, 7 green; 6 blue, 2 red, 4 green; 2 blue, 8 red
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Game 80: 19 green, 5 red; 5 green, 9 blue; 3 red, 18 blue, 10 green; 2 red, 15 green, 7 blue; 4 red, 14 green, 15 blue
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Game 81: 10 red, 2 blue, 1 green; 18 red, 3 blue; 6 red, 12 blue; 1 green, 3 red, 3 blue
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Game 82: 8 green, 1 blue; 2 blue, 4 red; 7 green, 1 red, 4 blue; 2 green, 3 red, 2 blue; 3 red; 4 red, 8 green, 1 blue
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Game 83: 3 green, 1 blue; 1 red, 2 blue, 14 green; 8 red, 17 green
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Game 84: 7 green, 4 blue, 4 red; 11 green, 17 red, 11 blue; 9 green, 5 blue, 14 red; 9 green, 10 blue, 5 red
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Game 85: 1 red, 1 green; 1 blue, 8 red, 1 green; 8 green, 1 red; 8 green, 2 red, 1 blue
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Game 86: 1 red, 5 blue, 1 green; 1 green, 7 red; 8 red; 3 blue, 2 red
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Game 87: 7 red, 8 blue, 1 green; 8 red, 6 green; 6 red, 8 green, 10 blue
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Game 88: 5 red, 4 green, 5 blue; 1 blue, 2 green; 6 green, 10 blue, 4 red; 1 red, 8 green, 1 blue
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Game 89: 3 green, 7 blue, 11 red; 1 blue, 5 green, 18 red; 1 blue, 3 green, 13 red; 7 blue, 9 green, 3 red; 1 green, 8 blue, 19 red; 4 blue, 15 red, 1 green
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Game 90: 3 blue, 3 red, 4 green; 14 red, 6 green, 4 blue; 1 blue, 9 red; 6 red, 1 green; 5 green, 8 red, 2 blue; 3 blue, 4 red, 3 green
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Game 91: 1 red, 1 blue, 16 green; 8 red, 5 green; 1 blue, 2 red, 10 green; 3 red, 15 green, 1 blue
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Game 92: 10 green, 12 blue; 6 red, 6 blue; 5 red, 12 blue; 6 red, 9 green, 2 blue; 10 blue, 3 red, 1 green; 1 red, 19 blue, 11 green
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Game 93: 4 green; 5 green, 2 blue, 3 red; 1 blue, 3 red, 6 green; 2 blue, 2 red, 7 green
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Game 94: 4 blue, 2 red; 6 green, 6 blue, 4 red; 8 green, 1 blue, 3 red
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Game 95: 6 green, 4 blue, 15 red; 13 red, 7 blue, 3 green; 14 red, 5 blue, 6 green; 5 blue, 7 red, 2 green
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Game 96: 1 red, 1 blue, 11 green; 6 blue, 2 red, 14 green; 3 green, 2 red; 9 blue, 10 green
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Game 97: 10 green; 2 red, 4 green, 1 blue; 2 green, 1 red; 2 red, 1 blue, 10 green; 1 green
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Game 98: 1 green, 5 blue; 2 green, 7 blue, 4 red; 2 red, 1 green, 9 blue; 4 blue, 4 red
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Game 99: 3 green, 1 red, 3 blue; 12 green, 12 blue, 4 red; 12 blue, 2 red, 10 green; 4 blue, 2 red, 4 green
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Game 100: 1 red, 5 blue, 2 green; 3 red, 1 blue; 1 green, 1 blue, 1 red
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215
day2/src/main.rs
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215
day2/src/main.rs
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#![feature(lazy_cell)]
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use regex::Regex;
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use std::fs::File;
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use std::{
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io::{BufRead, BufReader},
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sync::LazyLock,
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};
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fn main() {
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let input = parse();
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let part1_result = part1(&input);
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let part2_result = part2(&input);
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println!("part 1: {part1_result}");
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println!("part 2: {part2_result}");
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}
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fn parse() -> Vec<Game> {
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BufReader::new(File::open("input").expect("input file"))
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.lines()
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.map(|line| Game::parse(&line.expect("line")))
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.collect()
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}
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fn part1(input: &[Game]) -> u32 {
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input
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.iter()
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.filter_map(|game| {
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for round in &game.rounds {
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if round.red > 12 || round.green > 13 || round.blue > 14 {
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return None;
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}
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}
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Some(game.number)
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})
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.sum()
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}
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fn part2(input: &[Game]) -> u32 {
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input
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.iter()
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.map(|game| {
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let mut min = Bag::default();
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for round in &game.rounds {
|
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if round.red > min.red {
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min.red = round.red;
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}
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if round.green > min.green {
|
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min.green = round.green;
|
||||
}
|
||||
if round.blue > min.blue {
|
||||
min.blue = round.blue;
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}
|
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}
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min.power()
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})
|
||||
.sum()
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}
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||||
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static PATTERN: LazyLock<Regex> = LazyLock::new(|| Regex::new(r"(\d+) (red|green|blue)").unwrap());
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#[derive(Default, Debug, Copy, Clone, PartialEq, PartialOrd, Eq, Ord, Hash)]
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struct Bag {
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red: u8,
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green: u8,
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blue: u8,
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}
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impl std::ops::Add for Bag {
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type Output = Bag;
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fn add(self, rhs: Self) -> Self::Output {
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Bag {
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red: self.red + rhs.red,
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green: self.green + rhs.green,
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blue: self.blue + rhs.blue,
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}
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}
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}
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impl std::ops::AddAssign for Bag {
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fn add_assign(&mut self, rhs: Self) {
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self.red += rhs.red;
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self.green += rhs.green;
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self.blue += rhs.blue;
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}
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}
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impl std::iter::Sum for Bag {
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fn sum<I: Iterator<Item = Self>>(iter: I) -> Self {
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let mut out = Default::default();
|
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for value in iter {
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out += value;
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}
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out
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}
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}
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impl Bag {
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fn parse(text: &str) -> Bag {
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text.split(", ")
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.map(|color| {
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let caps = PATTERN
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.captures(color)
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.unwrap_or_else(|| panic!("unable to parse {color}"));
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match &caps[2] {
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"red" => Bag::red(caps[1].parse().expect("valid color value")),
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"green" => Bag::green(caps[1].parse().expect("valid color value")),
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"blue" => Bag::blue(caps[1].parse().expect("valid color value")),
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_ => panic!("invalid color {color}"),
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}
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})
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.sum()
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}
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fn red(val: u8) -> Self {
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Self {
|
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red: val,
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..Default::default()
|
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}
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}
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fn green(val: u8) -> Self {
|
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Self {
|
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green: val,
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..Default::default()
|
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}
|
||||
}
|
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fn blue(val: u8) -> Self {
|
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Self {
|
||||
blue: val,
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||||
..Default::default()
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}
|
||||
}
|
||||
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// "The power of a set of cubes is equal to the numbers of red, green, and
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// blue cubes multiplied together."
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fn power(&self) -> u32 {
|
||||
self.red as u32 * self.green as u32 * self.blue as u32
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||||
}
|
||||
}
|
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|
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#[derive(Debug, Default, PartialEq, PartialOrd, Eq, Ord)]
|
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struct Game {
|
||||
number: u32,
|
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rounds: Vec<Bag>,
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}
|
||||
|
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impl Game {
|
||||
fn parse(line: &str) -> Self {
|
||||
let colon_index = line.find(":").expect("colon");
|
||||
let game_number = line[5..colon_index].parse().expect("game number");
|
||||
// cuz "Game " is 5 letters ^
|
||||
let rounds = line[colon_index + 1..]
|
||||
.split("; ")
|
||||
.map(Bag::parse)
|
||||
.collect();
|
||||
Self {
|
||||
number: game_number,
|
||||
rounds,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod test {
|
||||
|
||||
use crate::Bag;
|
||||
use crate::Game;
|
||||
|
||||
use std::collections::HashMap;
|
||||
|
||||
// from https://stackoverflow.com/questions/27582739/how-do-i-create-a-hashmap-literal
|
||||
macro_rules! collection {
|
||||
// map-like
|
||||
($($k:expr => $v:expr),* $(,)?) => {{
|
||||
core::convert::From::from([$(($k, $v),)*])
|
||||
}};
|
||||
// set-like
|
||||
($($v:expr),* $(,)?) => {{
|
||||
core::convert::From::from([$($v,)*])
|
||||
}};
|
||||
}
|
||||
#[test]
|
||||
fn test_bag_parse() {
|
||||
let examples: HashMap<_, _> = collection! {
|
||||
Bag { blue: 3, red: 4, green: 0 } => "3 blue, 4 red",
|
||||
Bag { red: 1, green: 2, blue: 6 } => "1 red, 2 green, 6 blue",
|
||||
Bag::green(2) => "2 green",
|
||||
};
|
||||
for (example, plaintext) in examples.iter() {
|
||||
assert_eq!(example, &Bag::parse(plaintext));
|
||||
}
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_game_parse() {
|
||||
assert_eq!(
|
||||
Game::parse("Game 1: 3 blue, 4 red; 1 red, 2 green, 6 blue; 2 green"),
|
||||
Game {
|
||||
number: 1,
|
||||
rounds: vec![
|
||||
Bag {
|
||||
blue: 3,
|
||||
red: 4,
|
||||
green: 0
|
||||
},
|
||||
Bag {
|
||||
red: 1,
|
||||
green: 2,
|
||||
blue: 6
|
||||
},
|
||||
Bag::green(2),
|
||||
]
|
||||
}
|
||||
)
|
||||
}
|
||||
}
|
||||
Loading…
Reference in a new issue