day2: solution to problem 1
This commit is contained in:
Keenan Tims
parent
8b3ad9d645
commit
3a5fcbf980
119
2/Cargo.lock
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119
2/Cargo.lock
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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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"lazy-regex",
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"regex",
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]
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[[package]]
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name = "lazy-regex"
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version = "3.1.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "5d12be4595afdf58bd19e4a9f4e24187da2a66700786ff660a418e9059937a4c"
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dependencies = [
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"lazy-regex-proc_macros",
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"once_cell",
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"regex",
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]
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[[package]]
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name = "lazy-regex-proc_macros"
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version = "3.1.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "44bcd58e6c97a7fcbaffcdc95728b393b8d98933bfadad49ed4097845b57ef0b"
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dependencies = [
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"proc-macro2",
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"quote",
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"regex",
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"syn",
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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 = "once_cell"
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version = "1.18.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "dd8b5dd2ae5ed71462c540258bedcb51965123ad7e7ccf4b9a8cafaa4a63576d"
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[[package]]
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name = "proc-macro2"
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version = "1.0.70"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "39278fbbf5fb4f646ce651690877f89d1c5811a3d4acb27700c1cb3cdb78fd3b"
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dependencies = [
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"unicode-ident",
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]
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[[package]]
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name = "quote"
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version = "1.0.33"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "5267fca4496028628a95160fc423a33e8b2e6af8a5302579e322e4b520293cae"
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dependencies = [
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"proc-macro2",
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]
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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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[[package]]
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name = "syn"
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version = "2.0.39"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "23e78b90f2fcf45d3e842032ce32e3f2d1545ba6636271dcbf24fa306d87be7a"
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dependencies = [
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"proc-macro2",
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"quote",
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"unicode-ident",
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]
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[[package]]
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name = "unicode-ident"
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version = "1.0.12"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "3354b9ac3fae1ff6755cb6db53683adb661634f67557942dea4facebec0fee4b"
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10
2/Cargo.toml
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10
2/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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lazy-regex = "3.1.0"
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regex = "1.10.2"
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100
2/input
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100
2/input
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Game 1: 1 blue; 4 green, 5 blue; 11 red, 3 blue, 11 green; 1 red, 10 green, 4 blue; 17 red, 12 green, 7 blue; 3 blue, 19 green, 15 red
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Game 2: 17 red, 10 green; 3 blue, 17 red, 7 green; 10 green, 1 blue, 10 red; 7 green, 15 red, 1 blue; 7 green, 8 blue, 16 red; 18 red, 5 green, 3 blue
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Game 3: 10 blue, 3 green, 8 red; 15 green, 14 blue, 1 red; 8 blue, 11 red, 2 green; 5 red, 9 green, 6 blue
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Game 4: 1 red, 3 blue; 3 blue, 3 green, 1 red; 11 blue, 2 green; 2 green, 14 blue; 1 green, 7 blue; 11 blue, 5 green
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Game 5: 9 green, 5 red, 10 blue; 9 red, 4 blue, 12 green; 9 green, 6 blue, 14 red; 16 green, 8 red, 6 blue; 11 blue, 13 red, 1 green
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Game 6: 1 blue, 2 green, 16 red; 1 green, 19 red; 1 blue; 3 blue, 2 red, 1 green; 18 red, 2 blue, 1 green
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Game 7: 2 blue, 9 red, 5 green; 11 blue, 6 green, 4 red; 7 red, 3 green, 5 blue; 5 green, 11 blue, 7 red; 17 blue, 4 red, 3 green; 20 blue, 1 green, 2 red
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Game 8: 1 green, 6 red, 4 blue; 8 green, 4 blue, 2 red; 2 blue, 5 green
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Game 9: 1 green, 5 blue; 4 blue; 2 red, 1 blue
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Game 10: 1 green, 12 blue; 6 red, 4 green; 5 green, 14 blue, 9 red; 6 red, 13 blue, 2 green; 6 red, 17 blue, 1 green
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Game 11: 19 green, 1 red; 15 red, 7 green; 1 blue, 8 red, 14 green; 1 blue, 11 green, 1 red
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Game 12: 4 red, 3 green, 12 blue; 4 green, 13 red; 2 green, 15 blue, 5 red; 5 red, 10 blue, 3 green; 3 green, 17 blue, 17 red; 1 red, 4 green, 15 blue
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Game 13: 5 red, 7 blue; 6 red, 1 green, 11 blue; 17 blue, 11 green, 4 red; 6 red, 9 green, 5 blue; 4 green, 14 blue
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Game 14: 6 red, 15 blue, 3 green; 4 green, 4 blue, 3 red; 3 blue, 1 green, 5 red
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Game 15: 4 green, 3 blue, 6 red; 3 blue, 2 red, 4 green; 15 red, 3 green, 4 blue; 11 red, 2 blue, 1 green
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Game 16: 4 green, 1 blue, 12 red; 10 green, 6 blue, 10 red; 1 blue, 2 green, 15 red; 1 green, 3 red, 4 blue
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Game 17: 10 green, 11 blue; 13 green, 10 blue, 3 red; 8 red, 3 green, 10 blue
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Game 18: 3 red; 4 red, 1 blue; 3 green, 3 red; 10 green, 1 blue; 4 red, 6 green, 1 blue; 3 green
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Game 19: 4 red, 6 green; 11 red, 4 blue, 2 green; 4 green, 8 red; 9 red, 7 green, 2 blue; 13 red, 4 blue; 9 red
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Game 20: 2 blue, 1 green, 8 red; 3 green, 11 blue, 1 red; 5 blue, 4 red, 6 green; 6 green, 7 red, 5 blue; 7 red, 2 green, 1 blue
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Game 21: 7 blue, 3 green; 2 green, 2 red, 7 blue; 6 blue, 3 red, 1 green; 9 blue, 1 green, 3 red
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Game 22: 7 red, 5 blue, 9 green; 6 red, 1 blue, 5 green; 18 red, 7 green, 5 blue; 13 red, 11 green, 1 blue; 13 red, 1 blue, 11 green
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Game 23: 10 green, 1 blue, 5 red; 2 red, 4 green; 9 green, 2 red; 10 green, 1 blue, 5 red
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Game 24: 2 red, 6 green, 16 blue; 3 blue, 12 red, 3 green; 6 blue, 4 red, 12 green; 12 green, 14 blue, 3 red
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Game 25: 5 red, 2 blue, 1 green; 4 blue, 14 red, 2 green; 16 blue, 4 red; 5 red; 12 blue, 16 red; 2 red, 6 blue, 1 green
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Game 26: 10 blue, 6 green, 5 red; 2 red, 2 green; 8 blue, 5 red; 7 blue, 11 green; 8 green, 9 blue
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Game 27: 1 red, 2 green; 6 green, 10 blue; 1 red, 6 green, 11 blue; 4 blue, 1 green, 1 red; 1 red, 7 blue; 5 green, 2 blue, 1 red
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Game 28: 6 blue, 5 red, 3 green; 5 blue, 1 green; 1 green, 8 red, 1 blue; 2 blue, 4 green; 4 red, 5 blue
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Game 29: 2 red, 4 green, 6 blue; 6 blue, 2 green, 1 red; 10 green, 13 blue, 2 red; 11 green, 11 blue, 2 red; 5 red, 10 green
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Game 30: 4 green, 4 blue, 5 red; 6 red, 18 green, 7 blue; 1 red, 11 green, 2 blue; 11 red, 2 blue, 1 green
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Game 31: 1 red, 7 green, 2 blue; 5 red, 6 green, 9 blue; 3 green, 1 red, 9 blue; 3 red; 8 blue, 6 green, 1 red; 14 blue, 4 green, 7 red
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Game 32: 11 red, 2 blue, 2 green; 18 blue, 1 green; 6 blue, 1 green, 15 red; 4 red, 2 green; 13 red, 6 green, 5 blue; 7 blue, 5 green
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Game 33: 12 blue, 2 red, 2 green; 5 blue, 3 green; 2 green, 6 red, 4 blue; 12 blue, 13 red; 10 blue, 12 red, 1 green; 4 blue, 4 red
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Game 34: 2 blue, 1 red, 6 green; 2 blue, 1 green; 1 red, 2 green, 2 blue; 17 red, 1 blue, 2 green; 4 green, 2 red
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Game 35: 2 blue, 12 red, 2 green; 2 green, 8 red, 11 blue; 17 red, 16 blue; 8 blue, 8 red; 1 green, 6 red, 9 blue
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Game 36: 6 red, 14 green, 7 blue; 1 green, 1 red, 6 blue; 9 red, 10 blue, 9 green; 11 blue, 14 green, 8 red; 10 red, 6 green, 3 blue
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Game 37: 6 green; 2 red, 5 green; 4 blue, 4 red, 5 green; 1 red, 7 green, 4 blue
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Game 38: 1 green, 8 red, 10 blue; 3 green, 5 red, 12 blue; 13 blue, 5 red, 1 green; 3 green, 1 red; 3 red, 15 blue, 6 green; 3 green, 6 red, 4 blue
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Game 39: 15 green, 3 blue; 3 green; 3 blue, 3 red, 8 green; 4 blue, 10 green, 4 red; 2 green, 5 blue, 4 red; 3 green, 3 blue, 1 red
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Game 40: 2 red, 3 green, 15 blue; 5 blue, 13 green, 2 red; 11 blue, 1 red; 5 blue, 20 green, 5 red
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Game 41: 1 red, 2 green, 1 blue; 10 red; 11 green, 1 blue, 5 red; 10 red, 13 green
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Game 42: 10 red, 8 green, 2 blue; 5 green, 4 red; 6 red; 5 red, 9 green, 2 blue; 2 blue, 2 red, 3 green; 1 blue, 7 red, 2 green
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Game 43: 8 red, 6 blue, 12 green; 11 green, 2 red, 2 blue; 4 blue, 3 red, 8 green; 14 red, 3 blue; 9 green, 1 blue, 5 red
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Game 44: 4 red, 5 blue, 4 green; 9 blue, 1 green; 10 green, 2 blue, 4 red; 5 red, 15 green, 12 blue
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Game 45: 1 red, 2 green; 5 blue; 3 blue, 1 red; 1 blue; 4 green, 1 red
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Game 46: 3 green, 8 red, 5 blue; 1 blue, 10 red, 5 green; 2 green, 5 red, 3 blue; 5 green, 4 red, 13 blue
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Game 47: 2 green, 1 blue; 2 red, 2 green, 6 blue; 1 green, 1 red, 1 blue; 2 green, 4 blue, 4 red; 2 green, 6 blue, 3 red
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Game 48: 4 blue, 1 green, 2 red; 6 blue, 1 red; 4 blue
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Game 49: 16 blue, 18 green, 13 red; 7 red, 13 blue; 14 green, 12 red; 20 green, 14 red, 12 blue
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Game 50: 8 blue, 2 red, 1 green; 4 red, 2 green, 5 blue; 6 blue, 2 green; 8 blue, 3 green, 5 red; 1 green, 4 blue
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Game 51: 2 blue, 8 red; 2 green, 3 red, 2 blue; 12 green; 3 blue, 10 green, 1 red; 13 green, 3 blue, 5 red
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Game 52: 12 blue, 5 red, 16 green; 4 blue, 13 green; 2 red, 5 blue, 5 green; 4 green, 8 blue, 3 red
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Game 53: 7 blue, 5 green; 8 green, 8 blue; 4 red, 1 green; 8 blue, 5 red, 11 green
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Game 54: 4 blue, 3 green, 1 red; 10 green, 4 red, 7 blue; 1 red, 6 blue, 2 green
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Game 55: 2 red, 10 blue; 13 red, 10 blue; 4 red, 5 blue, 4 green; 3 green, 8 blue; 5 blue, 7 red, 2 green
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Game 56: 6 green, 7 blue, 9 red; 3 blue, 4 green; 15 red, 3 blue, 3 green; 5 red, 8 green, 7 blue
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Game 57: 9 red, 13 blue, 2 green; 3 red, 2 green, 3 blue; 1 blue, 5 red, 3 green; 9 blue, 2 green, 2 red; 3 red, 12 blue, 3 green; 2 green, 7 red
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Game 58: 4 blue, 7 red; 2 blue, 5 green, 1 red; 17 blue, 3 red; 5 green, 1 blue, 4 red; 4 green, 14 blue, 3 red
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Game 59: 5 blue, 4 red; 7 red; 4 blue, 4 red, 1 green; 1 green, 1 blue, 5 red
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Game 60: 4 red, 2 green; 1 green, 2 blue; 2 red, 2 green; 4 red, 2 green; 3 red
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Game 61: 6 red, 14 green; 12 green, 3 blue; 3 blue, 16 green, 11 red
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Game 62: 12 green, 2 red, 1 blue; 14 red, 2 blue, 4 green; 7 red, 5 green, 1 blue; 4 green, 14 red, 1 blue; 2 blue, 7 green, 3 red; 14 red, 9 green, 2 blue
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Game 63: 1 red, 8 blue, 12 green; 3 green, 10 blue, 4 red; 2 red, 1 blue, 2 green; 2 red, 8 green; 4 red, 3 blue, 9 green; 13 green, 4 blue
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Game 64: 4 blue, 9 green, 4 red; 10 green, 6 blue, 7 red; 10 green, 8 red, 1 blue; 13 blue, 8 green, 8 red; 4 green, 1 red, 8 blue
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Game 65: 16 blue, 5 red, 13 green; 5 red, 9 green, 10 blue; 2 green, 14 red; 6 red, 5 green, 5 blue; 19 blue, 4 green, 14 red; 7 red, 1 blue, 4 green
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Game 66: 7 blue, 11 green, 5 red; 7 green, 8 red, 10 blue; 3 red, 1 green
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Game 67: 9 green, 2 blue, 13 red; 11 red, 10 blue; 14 red, 1 green, 1 blue; 1 red, 13 green, 6 blue; 7 blue, 3 green, 5 red; 3 green, 2 blue
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Game 68: 6 green, 2 blue; 1 blue, 3 red, 5 green; 1 blue, 10 green
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Game 69: 4 red, 6 blue, 1 green; 6 blue, 2 red, 4 green; 9 green, 7 blue, 2 red
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Game 70: 11 blue, 1 green, 4 red; 7 blue, 1 green; 6 red, 9 blue; 1 green, 3 red, 7 blue; 1 green, 9 blue, 2 red
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Game 71: 2 green, 6 red; 1 blue, 2 green, 15 red; 6 red, 1 blue; 2 green, 5 red
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Game 72: 5 green, 6 red; 8 red, 1 blue, 12 green; 1 blue, 9 red, 15 green; 11 green, 1 blue, 6 red; 14 green, 5 red
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Game 73: 9 green, 13 red, 1 blue; 14 green, 5 blue, 13 red; 13 green, 10 red, 16 blue; 3 blue, 7 red, 1 green; 7 red, 6 green, 11 blue
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Game 74: 1 blue, 9 red, 15 green; 3 blue, 7 green; 9 green, 1 blue, 7 red
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Game 75: 5 blue, 12 red, 2 green; 2 blue, 2 green; 4 green, 2 red, 7 blue; 4 green, 7 blue, 5 red; 1 green, 7 blue, 3 red
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Game 76: 1 blue; 8 red, 13 blue; 4 green, 7 blue, 7 red; 3 red, 12 blue, 2 green; 2 green, 2 blue, 1 red
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Game 77: 4 blue; 4 blue; 1 blue, 1 red; 1 red, 5 blue; 10 blue, 1 green
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Game 78: 3 blue, 10 green, 6 red; 12 red, 7 blue, 8 green; 2 green, 18 red, 5 blue; 2 red, 15 blue, 14 green; 4 green, 6 blue, 13 red
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Game 79: 7 red, 1 green; 1 blue, 6 red, 2 green; 1 blue, 12 red
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Game 80: 4 red, 6 blue, 2 green; 5 blue, 2 red; 6 blue, 7 red, 2 green
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Game 81: 2 green, 9 red; 2 green, 2 blue, 7 red; 12 red, 7 green; 8 green, 3 red, 3 blue
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Game 82: 4 green, 5 blue; 2 red, 16 blue; 2 red, 2 green, 18 blue
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Game 83: 14 red, 2 green; 3 blue, 16 red, 2 green; 4 green, 13 red, 1 blue
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Game 84: 10 green, 6 blue, 2 red; 5 red, 6 blue; 7 green, 6 red, 9 blue
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Game 85: 1 red; 12 red, 1 blue, 2 green; 6 red, 1 green; 12 red, 2 green
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Game 86: 14 red, 1 green, 3 blue; 3 blue; 4 green, 8 red, 2 blue; 10 red, 2 green
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Game 87: 4 red, 9 green, 8 blue; 3 green, 6 blue, 7 red; 4 blue, 1 red; 2 red, 7 blue, 11 green; 8 green, 2 blue, 5 red; 6 blue, 10 green, 8 red
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Game 88: 1 green, 1 red; 2 green, 1 blue; 3 green, 1 red, 1 blue; 4 green; 1 blue, 3 green, 1 red
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Game 89: 11 green, 7 blue, 8 red; 7 blue, 3 green, 2 red; 7 green, 6 red, 4 blue; 1 blue, 2 green, 10 red; 3 red, 2 blue, 1 green
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Game 90: 10 green, 12 red, 2 blue; 7 red, 7 blue, 8 green; 2 blue, 11 red, 7 green; 6 green, 5 red, 2 blue; 7 red, 10 green
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Game 91: 12 red, 8 green; 8 red, 6 green, 3 blue; 12 red, 4 blue, 2 green
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Game 92: 10 blue, 3 green; 4 red, 13 blue, 8 green; 7 green, 8 blue, 7 red
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Game 93: 7 red, 4 green, 1 blue; 15 green, 4 red; 2 blue, 15 red
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Game 94: 10 red, 10 green, 11 blue; 3 red, 1 green, 7 blue; 9 red, 4 green, 9 blue; 7 red, 9 green, 13 blue; 9 blue, 2 green, 10 red
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Game 95: 4 blue, 12 green; 7 green, 1 red, 5 blue; 2 blue, 8 green, 8 red
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Game 96: 12 green, 2 blue; 11 green, 3 blue; 3 red, 2 green, 5 blue; 12 green, 2 blue, 4 red; 2 blue, 1 green, 1 red; 3 red, 11 green, 3 blue
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Game 97: 6 red, 3 blue, 1 green; 1 blue, 2 red, 14 green; 4 blue, 14 green
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Game 98: 13 green, 1 red, 5 blue; 2 red, 5 green, 7 blue; 19 green, 5 blue; 4 blue, 13 green; 5 green, 8 blue
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Game 99: 11 red, 8 green; 16 red, 10 green; 9 red, 6 green; 3 blue, 2 red, 4 green
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Game 100: 4 red, 2 blue, 4 green; 2 green, 1 red, 1 blue; 3 green, 4 blue, 5 red; 18 red, 2 blue; 9 red, 5 green, 4 blue
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170
2/src/main.rs
Normal file
170
2/src/main.rs
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|
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|
use std::fs::File;
|
||||||
|
use std::io::{BufRead, BufReader, Lines};
|
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|
|
||||||
|
use lazy_regex::{lazy_regex, Lazy};
|
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|
use regex::Regex;
|
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|
|
||||||
|
// --- Day 2: Cube Conundrum ---
|
||||||
|
|
||||||
|
// You're launched high into the atmosphere! The apex of your trajectory just barely
|
||||||
|
// reaches the surface of a large island floating in the sky. You gently land in a
|
||||||
|
// fluffy pile of leaves. It's quite cold, but you don't see much snow. An Elf runs over
|
||||||
|
// to greet you.
|
||||||
|
|
||||||
|
// The Elf explains that you've arrived at Snow Island and apologizes for the lack of
|
||||||
|
// snow. He'll be happy to explain the situation, but it's a bit of a walk, so you have
|
||||||
|
// some time. They don't get many visitors up here; would you like to play a game in the
|
||||||
|
// meantime?
|
||||||
|
|
||||||
|
// As you walk, the Elf shows you a small bag and some cubes which are either red,
|
||||||
|
// green, or blue. Each time you play this game, he will hide a secret number of cubes
|
||||||
|
// of each color in the bag, and your goal is to figure out information about the number
|
||||||
|
// of cubes.
|
||||||
|
|
||||||
|
// To get information, once a bag has been loaded with cubes, the Elf will reach into
|
||||||
|
// the bag, grab a handful of random cubes, show them to you, and then put them back in
|
||||||
|
// the bag. He'll do this a few times per game.
|
||||||
|
|
||||||
|
// You play several games and record the information from each game (your puzzle input).
|
||||||
|
// Each game is listed with its ID number (like the 11 in Game 11: ...) followed by a
|
||||||
|
// semicolon-separated list of subsets of cubes that were revealed from the bag (like 3
|
||||||
|
// red, 5 green, 4 blue).
|
||||||
|
|
||||||
|
// For example, the record of a few games might look like this:
|
||||||
|
|
||||||
|
// Game 1: 3 blue, 4 red; 1 red, 2 green, 6 blue; 2 green Game 2: 1 blue, 2 green; 3
|
||||||
|
// green, 4 blue, 1 red; 1 green, 1 blue Game 3: 8 green, 6 blue, 20 red; 5 blue, 4 red,
|
||||||
|
// 13 green; 5 green, 1 red Game 4: 1 green, 3 red, 6 blue; 3 green, 6 red; 3 green, 15
|
||||||
|
// blue, 14 red Game 5: 6 red, 1 blue, 3 green; 2 blue, 1 red, 2 green
|
||||||
|
|
||||||
|
// In game 1, three sets of cubes are revealed from the bag (and then put back again).
|
||||||
|
// The first set is 3 blue cubes and 4 red cubes; the second set is 1 red cube, 2 green
|
||||||
|
// cubes, and 6 blue cubes; the third set is only 2 green cubes.
|
||||||
|
|
||||||
|
// BOILERPLATE
|
||||||
|
type InputIter = Lines<BufReader<File>>;
|
||||||
|
|
||||||
|
fn get_input() -> InputIter {
|
||||||
|
let f = File::open("input").unwrap();
|
||||||
|
let br = BufReader::new(f);
|
||||||
|
br.lines()
|
||||||
|
}
|
||||||
|
|
||||||
|
fn main() {
|
||||||
|
println!("Problem 1 solution: {}", problem1(get_input()));
|
||||||
|
println!("Problem 2 solution: {}", problem2(get_input()));
|
||||||
|
}
|
||||||
|
|
||||||
|
// PARSING
|
||||||
|
|
||||||
|
struct CubeCount {
|
||||||
|
blue: u64,
|
||||||
|
red: u64,
|
||||||
|
green: u64,
|
||||||
|
}
|
||||||
|
|
||||||
|
impl Default for CubeCount {
|
||||||
|
fn default() -> Self {
|
||||||
|
Self {
|
||||||
|
blue: 0,
|
||||||
|
red: 0,
|
||||||
|
green: 0,
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
impl From<&str> for CubeCount {
|
||||||
|
fn from(s: &str) -> Self {
|
||||||
|
let mut result = Self::default();
|
||||||
|
let counts = s.split(", ");
|
||||||
|
for count in counts {
|
||||||
|
let (n, color) = count.split_once(' ').unwrap();
|
||||||
|
match color {
|
||||||
|
"blue" => result.blue = n.parse().unwrap(),
|
||||||
|
"red" => result.red = n.parse().unwrap(),
|
||||||
|
"green" => result.green = n.parse().unwrap(),
|
||||||
|
_ => panic!("bad colour {}", color),
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
result
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
pub static GAME_ID_REGEX: Lazy<Regex> = lazy_regex!(r"^Game ([0-9]+)");
|
||||||
|
|
||||||
|
struct GameResult {
|
||||||
|
id: u64,
|
||||||
|
results: Vec<CubeCount>,
|
||||||
|
}
|
||||||
|
|
||||||
|
impl From<&str> for GameResult {
|
||||||
|
fn from(s: &str) -> Self {
|
||||||
|
let mut results = Vec::new();
|
||||||
|
let (s_id, rest) = s.split_once(": ").unwrap();
|
||||||
|
let id: u64 = GAME_ID_REGEX
|
||||||
|
.captures(s_id)
|
||||||
|
.unwrap()
|
||||||
|
.get(1)
|
||||||
|
.unwrap()
|
||||||
|
.as_str()
|
||||||
|
.parse()
|
||||||
|
.unwrap();
|
||||||
|
|
||||||
|
let s_results = rest.split("; ");
|
||||||
|
|
||||||
|
for s_result in s_results {
|
||||||
|
results.push(CubeCount::from(s_result));
|
||||||
|
}
|
||||||
|
|
||||||
|
GameResult { id, results }
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// PROBLEM 1 solution
|
||||||
|
|
||||||
|
// The Elf would first like to know which games would have been possible if the bag
|
||||||
|
// contained only 12 red cubes, 13 green cubes, and 14 blue cubes?
|
||||||
|
|
||||||
|
// In the example above, games 1, 2, and 5 would have been possible if the bag had been
|
||||||
|
// loaded with that configuration. However, game 3 would have been impossible because at
|
||||||
|
// one point the Elf showed you 20 red cubes at once; similarly, game 4 would also have
|
||||||
|
// been impossible because the Elf showed you 15 blue cubes at once. If you add up the
|
||||||
|
// IDs of the games that would have been possible, you get 8.
|
||||||
|
|
||||||
|
// Determine which games would have been possible if the bag had been loaded with only
|
||||||
|
// 12 red cubes, 13 green cubes, and 14 blue cubes. What is the sum of the IDs of those
|
||||||
|
// games?
|
||||||
|
|
||||||
|
// possible criteria: 12 red cubes, 13 green cubes, and 14 blue cubes
|
||||||
|
|
||||||
|
const PROBLEM1_MINIMUM: CubeCount = CubeCount {
|
||||||
|
red: 12,
|
||||||
|
green: 13,
|
||||||
|
blue: 14,
|
||||||
|
};
|
||||||
|
|
||||||
|
fn problem1_result_possible(game: &GameResult) -> bool {
|
||||||
|
!game.results.iter().any(|result| {
|
||||||
|
result.red > PROBLEM1_MINIMUM.red
|
||||||
|
|| result.green > PROBLEM1_MINIMUM.green
|
||||||
|
|| result.blue > PROBLEM1_MINIMUM.blue
|
||||||
|
})
|
||||||
|
}
|
||||||
|
|
||||||
|
fn problem1(input: InputIter) -> u64 {
|
||||||
|
let mut n = 0u64;
|
||||||
|
for line in input {
|
||||||
|
let game_result = GameResult::from(line.unwrap().as_str());
|
||||||
|
if problem1_result_possible(&game_result) {
|
||||||
|
n += game_result.id;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
n
|
||||||
|
}
|
||||||
|
|
||||||
|
// PROBLEM 2 solution
|
||||||
|
fn problem2(input: InputIter) -> u64 {
|
||||||
|
0
|
||||||
|
}
|
||||||
Loading…
Reference in New Issue
Block a user