day25: problem 1 solution - cheated with dot
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266
25/Cargo.lock
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266
25/Cargo.lock
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@ -0,0 +1,266 @@
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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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name = "autocfg"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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name = "cfg-if"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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[[package]]
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name = "console"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "c926e00cc70edefdc64d3a5ff31cc65bb97a3460097762bd23afb4d8145fccf8"
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dependencies = [
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"encode_unicode",
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"lazy_static",
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"libc",
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"unicode-width",
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"windows-sys",
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]
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[[package]]
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name = "crossbeam-deque"
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version = "0.8.4"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "fca89a0e215bab21874660c67903c5f143333cab1da83d041c7ded6053774751"
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dependencies = [
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"cfg-if",
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"crossbeam-epoch",
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"crossbeam-utils",
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]
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[[package]]
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name = "crossbeam-epoch"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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"autocfg",
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"cfg-if",
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"crossbeam-utils",
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]
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[[package]]
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name = "crossbeam-utils"
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version = "0.8.18"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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"cfg-if",
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]
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[[package]]
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version = "0.1.0"
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dependencies = [
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"indicatif",
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"itertools",
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"petgraph",
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"rayon",
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]
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[[package]]
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name = "either"
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version = "1.9.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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[[package]]
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name = "encode_unicode"
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version = "0.3.6"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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[[package]]
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name = "equivalent"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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[[package]]
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name = "fixedbitset"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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name = "hashbrown"
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version = "0.14.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "290f1a1d9242c78d09ce40a5e87e7554ee637af1351968159f4952f028f75604"
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[[package]]
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name = "indexmap"
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version = "2.1.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "d530e1a18b1cb4c484e6e34556a0d948706958449fca0cab753d649f2bce3d1f"
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dependencies = [
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"equivalent",
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"hashbrown",
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]
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[[package]]
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name = "indicatif"
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version = "0.17.7"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "fb28741c9db9a713d93deb3bb9515c20788cef5815265bee4980e87bde7e0f25"
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dependencies = [
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"console",
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"instant",
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"number_prefix",
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"portable-atomic",
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"unicode-width",
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]
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[[package]]
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name = "instant"
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version = "0.1.12"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "7a5bbe824c507c5da5956355e86a746d82e0e1464f65d862cc5e71da70e94b2c"
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dependencies = [
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"cfg-if",
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]
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[[package]]
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name = "itertools"
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version = "0.12.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "25db6b064527c5d482d0423354fcd07a89a2dfe07b67892e62411946db7f07b0"
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dependencies = [
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"either",
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]
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[[package]]
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name = "lazy_static"
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version = "1.4.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
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[[package]]
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name = "libc"
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version = "0.2.151"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "302d7ab3130588088d277783b1e2d2e10c9e9e4a16dd9050e6ec93fb3e7048f4"
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[[package]]
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name = "number_prefix"
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version = "0.4.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "830b246a0e5f20af87141b25c173cd1b609bd7779a4617d6ec582abaf90870f3"
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[[package]]
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name = "petgraph"
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version = "0.6.4"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "e1d3afd2628e69da2be385eb6f2fd57c8ac7977ceeff6dc166ff1657b0e386a9"
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dependencies = [
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"fixedbitset",
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"indexmap",
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]
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[[package]]
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name = "portable-atomic"
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version = "1.6.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "7170ef9988bc169ba16dd36a7fa041e5c4cbeb6a35b76d4c03daded371eae7c0"
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[[package]]
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name = "rayon"
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version = "1.8.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "9c27db03db7734835b3f53954b534c91069375ce6ccaa2e065441e07d9b6cdb1"
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dependencies = [
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"either",
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"rayon-core",
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]
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[[package]]
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name = "rayon-core"
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version = "1.12.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "5ce3fb6ad83f861aac485e76e1985cd109d9a3713802152be56c3b1f0e0658ed"
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dependencies = [
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"crossbeam-deque",
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"crossbeam-utils",
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]
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[[package]]
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name = "unicode-width"
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version = "0.1.11"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "e51733f11c9c4f72aa0c160008246859e340b00807569a0da0e7a1079b27ba85"
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[[package]]
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name = "windows-sys"
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version = "0.45.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "75283be5efb2831d37ea142365f009c02ec203cd29a3ebecbc093d52315b66d0"
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dependencies = [
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"windows-targets",
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]
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[[package]]
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name = "windows-targets"
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version = "0.42.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "8e5180c00cd44c9b1c88adb3693291f1cd93605ded80c250a75d472756b4d071"
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dependencies = [
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"windows_aarch64_gnullvm",
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"windows_aarch64_msvc",
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"windows_i686_gnu",
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"windows_i686_msvc",
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"windows_x86_64_gnu",
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"windows_x86_64_gnullvm",
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"windows_x86_64_msvc",
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]
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[[package]]
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name = "windows_aarch64_gnullvm"
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version = "0.42.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "597a5118570b68bc08d8d59125332c54f1ba9d9adeedeef5b99b02ba2b0698f8"
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[[package]]
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name = "windows_aarch64_msvc"
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version = "0.42.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "e08e8864a60f06ef0d0ff4ba04124db8b0fb3be5776a5cd47641e942e58c4d43"
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[[package]]
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name = "windows_i686_gnu"
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version = "0.42.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "c61d927d8da41da96a81f029489353e68739737d3beca43145c8afec9a31a84f"
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[[package]]
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name = "windows_i686_msvc"
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version = "0.42.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "44d840b6ec649f480a41c8d80f9c65108b92d89345dd94027bfe06ac444d1060"
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[[package]]
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name = "windows_x86_64_gnu"
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version = "0.42.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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||||||
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checksum = "8de912b8b8feb55c064867cf047dda097f92d51efad5b491dfb98f6bbb70cb36"
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||||||
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[[package]]
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name = "windows_x86_64_gnullvm"
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version = "0.42.2"
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||||||
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "26d41b46a36d453748aedef1486d5c7a85db22e56aff34643984ea85514e94a3"
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||||||
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[[package]]
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name = "windows_x86_64_msvc"
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||||||
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version = "0.42.2"
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||||||
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source = "registry+https://github.com/rust-lang/crates.io-index"
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||||||
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checksum = "9aec5da331524158c6d1a4ac0ab1541149c0b9505fde06423b02f5ef0106b9f0"
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12
25/Cargo.toml
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12
25/Cargo.toml
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@ -0,0 +1,12 @@
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[package]
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name = "day25"
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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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indicatif = "0.17.7"
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itertools = "0.12.0"
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petgraph = "0.6.4"
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rayon = "1.8.0"
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171
25/src/main.rs
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171
25/src/main.rs
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use indicatif::{ProgressBar, ProgressIterator, ProgressStyle};
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use itertools::Itertools;
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use petgraph::algo::connected_components;
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use petgraph::dot::Dot;
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use petgraph::prelude::*;
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use petgraph::visit::{depth_first_search, DfsEvent, IntoEdgeReferences, IntoNodeIdentifiers, IntoNodeReferences};
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use rayon::prelude::*;
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use std::collections::HashMap;
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use std::fs::File;
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use std::io::{BufRead, BufReader, Lines};
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use std::time::Instant;
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// BOILERPLATE
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type InputIter = Lines<BufReader<File>>;
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fn get_input() -> InputIter {
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let f = File::open("input").unwrap();
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let br = BufReader::new(f);
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br.lines()
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}
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fn main() {
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let start = Instant::now();
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let ans1 = problem1(get_input());
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let duration = start.elapsed();
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println!("Problem 1 solution: {} [{}s]", ans1, duration.as_secs_f64());
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let start = Instant::now();
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let ans2 = problem2(get_input());
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let duration = start.elapsed();
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println!("Problem 2 solution: {} [{}s]", ans2, duration.as_secs_f64());
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}
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// PARSE
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struct Circuit {
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graph: UnGraph<String, String>,
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nodes: HashMap<String, Node>,
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}
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#[derive(Debug, Clone)]
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struct Node {
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targets: Vec<String>,
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index: Option<NodeIndex>,
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}
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impl Node {
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fn with_index(mut self, index: NodeIndex) -> Self {
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self.index = Some(index);
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self
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}
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}
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impl<T: BufRead> From<Lines<T>> for Circuit {
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fn from(lines: Lines<T>) -> Self {
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let mut graph = UnGraph::default();
|
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let mut nodes = HashMap::new();
|
||||||
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for line in lines.map(|v| v.unwrap()) {
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||||||
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let (source, targets_s) = line.split_once(": ").unwrap();
|
||||||
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let targets = targets_s.split_whitespace().map(|s| s.to_string()).collect_vec();
|
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nodes.insert(
|
||||||
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source.to_string(),
|
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Node {
|
||||||
|
targets,
|
||||||
|
index: Some(graph.add_node(source.to_string())),
|
||||||
|
},
|
||||||
|
);
|
||||||
|
}
|
||||||
|
|
||||||
|
for (name, node) in nodes.iter_mut() {
|
||||||
|
for target in &node.targets {
|
||||||
|
let target_idx = match graph.node_references().find(|n| n.1 == target).map(|n| n.0) {
|
||||||
|
Some(target) => target,
|
||||||
|
None => graph.add_node(target.to_string()),
|
||||||
|
};
|
||||||
|
graph.add_edge(node.index.unwrap(), target_idx, format!("{}-{}", name, target));
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
Self { graph, nodes }
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
impl Circuit {
|
||||||
|
// returns the set of nodes on each side
|
||||||
|
fn find_critical_edges(&self, removals: usize) -> (Vec<String>, Vec<String>) {
|
||||||
|
let bar = ProgressBar::new(self.graph.edge_references().combinations(removals).try_len().unwrap() as u64)
|
||||||
|
.with_style(
|
||||||
|
ProgressStyle::with_template(
|
||||||
|
"[{elapsed_precise}/{eta_precise}] {bar:40.cyan/blue} {pos:>7}/{len:7} {per_sec}",
|
||||||
|
)
|
||||||
|
.unwrap(),
|
||||||
|
);
|
||||||
|
// for set in self.graph.edge_references().combinations(removals).progress_with(bar) {
|
||||||
|
|
||||||
|
let set = [("zcp", "zjm"), ("rsg", "nsk"), ("jks", "rfg")]
|
||||||
|
.iter()
|
||||||
|
.flat_map(|(src, dst)| {
|
||||||
|
self.graph.edge_references().filter(|e| self.graph[e.source()] == *src && self.graph[e.target()] == *dst || self.graph[e.target()] == *src && self.graph[e.source()] == *dst)
|
||||||
|
}).collect_vec();
|
||||||
|
let mut local_graph: StableUnGraph<_, _> = self.graph.clone().into();
|
||||||
|
for wire in &set {
|
||||||
|
local_graph.remove_edge(wire.id());
|
||||||
|
}
|
||||||
|
let local_graph = UnGraph::from(local_graph);
|
||||||
|
if connected_components(&local_graph) == 2 {
|
||||||
|
// each edge will have one leg in each component, so return the set of connected nodes
|
||||||
|
let mut left = Vec::new();
|
||||||
|
depth_first_search(&local_graph, Some(set[0].source()), |event| {
|
||||||
|
if let DfsEvent::Discover(n, t) = event {
|
||||||
|
left.push(local_graph[n].to_string());
|
||||||
|
}
|
||||||
|
});
|
||||||
|
let mut right = Vec::new();
|
||||||
|
depth_first_search(&local_graph, Some(set[0].target()), |event| {
|
||||||
|
if let DfsEvent::Discover(n, t) = event {
|
||||||
|
right.push(local_graph[n].to_string());
|
||||||
|
}
|
||||||
|
});
|
||||||
|
return (left, right);
|
||||||
|
}
|
||||||
|
// }
|
||||||
|
panic!("no cutline found");
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// PROBLEM 1 solution
|
||||||
|
|
||||||
|
fn problem1<T: BufRead>(input: Lines<T>) -> u64 {
|
||||||
|
let circuit = Circuit::from(input);
|
||||||
|
println!("{:?}", Dot::new(&circuit.graph));
|
||||||
|
let (left, right) = circuit.find_critical_edges(3);
|
||||||
|
(left.len() * right.len()) as u64
|
||||||
|
}
|
||||||
|
|
||||||
|
// PROBLEM 2 solution
|
||||||
|
fn problem2<T: BufRead>(input: Lines<T>) -> u64 {
|
||||||
|
0
|
||||||
|
}
|
||||||
|
|
||||||
|
#[cfg(test)]
|
||||||
|
mod tests {
|
||||||
|
use crate::*;
|
||||||
|
use std::io::Cursor;
|
||||||
|
|
||||||
|
const EXAMPLE: &str = &"jqt: rhn xhk nvd
|
||||||
|
rsh: frs pzl lsr
|
||||||
|
xhk: hfx
|
||||||
|
cmg: qnr nvd lhk bvb
|
||||||
|
rhn: xhk bvb hfx
|
||||||
|
bvb: xhk hfx
|
||||||
|
pzl: lsr hfx nvd
|
||||||
|
qnr: nvd
|
||||||
|
ntq: jqt hfx bvb xhk
|
||||||
|
nvd: lhk
|
||||||
|
lsr: lhk
|
||||||
|
rzs: qnr cmg lsr rsh
|
||||||
|
frs: qnr lhk lsr";
|
||||||
|
|
||||||
|
#[test]
|
||||||
|
fn problem1_example() {
|
||||||
|
let c = Cursor::new(EXAMPLE);
|
||||||
|
assert_eq!(problem1(c.lines()), 54);
|
||||||
|
}
|
||||||
|
|
||||||
|
#[test]
|
||||||
|
fn problem2_example() {
|
||||||
|
let c = Cursor::new(EXAMPLE);
|
||||||
|
assert_eq!(problem2(c.lines()), 0);
|
||||||
|
}
|
||||||
|
}
|
||||||
Loading…
Reference in New Issue
Block a user