From 227d78cc90b3ef591ffa768fd971b460991da1c9 Mon Sep 17 00:00:00 2001 From: Defelo Date: Wed, 18 Dec 2024 07:49:10 +0100 Subject: [PATCH] Rust/2024/18: add solution --- README.md | 4 +- Rust/2024/18.rs | 94 ++++++++++++++++++++++++++++++++++++++++++++ Rust/2024/main.rs | 2 +- Rust/Cargo.toml | 3 ++ examples/2024/18/1 | 26 ++++++++++++ examples/2024/18/1.1 | 1 + examples/2024/18/1.2 | 1 + 7 files changed, 128 insertions(+), 3 deletions(-) create mode 100644 Rust/2024/18.rs create mode 100644 examples/2024/18/1 create mode 100644 examples/2024/18/1.1 create mode 100644 examples/2024/18/1.2 diff --git a/README.md b/README.md index ae3556f..c5acfa5 100644 --- a/README.md +++ b/README.md @@ -9,13 +9,13 @@ |[2021](https://adventofcode.com/2021/leaderboard)|**136**|438|13.41% (of 1014)|0.0532% (of ≥255548)| |[2020](https://adventofcode.com/2020/leaderboard)|**621**|46|65.23% (of 952)|0.3146% (of ≥197402)| -## [2024](https://adventofcode.com/2024) ([ Rust](Rust/2024): 17/25 | [ Uiua](Uiua/2024): 16/25 | [ Ruby](Ruby/2024): 5/25 | [ Haskell](Haskell/2024): 4/25 | [ Nix](Nix/2024): 1/25) +## [2024](https://adventofcode.com/2024) ([ Rust](Rust/2024): 18/25 | [ Uiua](Uiua/2024): 16/25 | [ Ruby](Ruby/2024): 5/25 | [ Haskell](Haskell/2024): 4/25 | [ Nix](Nix/2024): 1/25) |Mo|Tu|We|Th|Fr|Sa|Su| |-|-|-|-|-|-|-| |||||||[**1**](https://adventofcode.com/2024/day/1) [](Rust/2024/01.rs "Rust solution for 2024/01") [](Haskell/2024/01.hs "Haskell solution for 2024/01") [](https://uiua.org/pad?src=JnNjCgrCsOKKn-KNieKKnOKKnOKLleKIqeKJoEBcbixAIC4K4oipLyviioMo4pmtw5fiip7iirg9fOKMtS3iiKnijYYpCg== "Uiua solution for 2024/01") [](Nix/2024/01.nix "Nix solution for 2024/01") [](Ruby/2024/01.rb "Ruby solution for 2024/01")| |[**2**](https://adventofcode.com/2024/day/2) [](Rust/2024/02.rs "Rust solution for 2024/02") [](Haskell/2024/02.hs "Haskell solution for 2024/02") [](https://uiua.org/pad?src=JnNjCgriipwo4pah4oqc4ouVKeKIqeKJoEBcbixAIC4KCkNoZWNrIOKGkCDDl-KKgygvw5fiiaQz4oy1fOKJjcKkMeKMteKXtMKxKeKniC0K4oipLyviiaHil4fiioMoL-KGpeKJoShDaGVja-KWvSniip7iiaAu4oeh4qe74p-cwqR8Q2hlY2spCg== "Uiua solution for 2024/02") [](Ruby/2024/02.rb "Ruby solution for 2024/02")|[**3**](https://adventofcode.com/2024/day/3) [](Rust/2024/03.rs "Rust solution for 2024/03") [](Haskell/2024/03.hs "Haskell solution for 2024/03") [](https://uiua.org/pad?src=JnNjCgrilr3irJoxXCjihqXihqfiipnCsOKKnynijYniip_CrOKIqeKMlSJkb24ndCgpIiwiZG8oKSIuLgriiKkoLysvw5fii5Xihpgx4o2JcmVnZXgibXVsXFwoKFxcZCspLChcXGQrKVxcKSIpCg== "Uiua solution for 2024/03") [](Ruby/2024/03.rb "Ruby solution for 2024/03")|[**4**](https://adventofcode.com/2024/day/4) [](Rust/2024/04.rs "Rust solution for 2024/04") [](https://uiua.org/pad?src=JnNjCgriipziiJjiiaBAXG4uCgripLAg4oaQIOKIqeKKleKWoeKKmSzijZzima3iipviip7iioMtK-KIqeKHocKw4oqf4oq44pazCgrin5woLyviiaHil4coLyvijJUiWE1BUyIp4oqC4p-c4o2a4oeM4oqC4oqDKOKKguKksHziioLiiKniiaHilqHin5zijYkpKQovK-KZreKniCjDl-KIqSgv4oal4omh4omN4pahIk1BUyLiioLin5zijZrih4wp4qSwKTNfMwo= "Uiua solution for 2024/04") [](Ruby/2024/04.rb "Ruby solution for 2024/04")|[**5**](https://adventofcode.com/2024/day/5) [](Rust/2024/05.rs "Rust solution for 2024/05") [](Haskell/2024/05.hs "Haskell solution for 2024/05") [](https://uiua.org/pad?src=JnNjCgriioPihpjihpniiqLiiprijJUiXG5cbiIuCuKKmSjiipziipzii5XiiKniiaBAXG4sQHwuKQriipwo4pah4oqc4ouVKeKIqeKJoEBcbixALC4KCk1pbiAgICDihpAg4oqi4pa9wqziirjiiIo64p-cKOKJoeKKo-KWveKIiuKKmeKKuOKJoeKKoikKUmVtb3ZlIOKGkCDiioLiioMo4oaZfOKGmCsxKeKKouKKmuKKuD0KU29ydCAgIOKGkCDiipnii4Xil4zijaIo4oqD4oqC4ouFUmVtb3Zl4oqZ4pehTWlufOKJoDDip7vil4wpW10KTWlkICAgIOKGkCDiio_ijIrDtzLiirjip7sKCuKIqSgvK-KJoeKXh01pZOKWvSkgwqwsLOKKuOKJoeKJjSDin5zijZpTb3J04oqZwqQK "Uiua solution for 2024/05") [](Ruby/2024/05.rb "Ruby solution for 2024/05")|[**6**](https://adventofcode.com/2024/day/6) [](Rust/2024/06.rs "Rust solution for 2024/06") [](https://uiua.org/pad?src=JnNjCgriipziiJjiiaBAXG4uCgpJbml0ICDihpAgwq8xXzDiiqLiipo9QF4KU3RlcCAg4oaQIOKorCjin5wrfOKHjOKNnOKKosKvKT1AI-KXoSjirJpALuKKoSspClZhbGlkIOKGkCAvw5fDl-KIqT7CrzEu4oqZ4pazCgptYXAuW10g4oq4SW5pdAomcOKKuOKnuyDiipnii4Xil4zijaIo4oqDKGluc2VydOKKmTA64oqZ4peMfOKLhVN0ZXApfOKLheKLhVZhbGlkKQoKU2tpcEZvcndhcmQg4oaQIOKNoijin5wrfMOX4oqDKOKLhVZhbGlkfOKJoEAj4qyaQC7iiqErKSkKQ2hlY2tDeWNsZSDihpAgKAogIG1hcC5bXSDiirhJbml0CiAg4o2iKOKKgyhpbnNlcnTiipkwOuKKmeKKgnzih4zijZziiqLCr1NraXBGb3J3YXJk4peMKXzCrGhhc-KWoTriipniioIpCiAgVmFsaWTii4Xil4wKKQoK4pa9PUAu4peh4oqh4oqZ4peMwrBtYXAKJnAgLyviiaF3YWl04omhcG9vbChDaGVja0N5Y2xl4o2c4oqh4ouFQCMp4oqZwqQK "Uiua solution for 2024/06")|[**7**](https://adventofcode.com/2024/day/7) [](Rust/2024/07.rs "Rust solution for 2024/07") [](https://uiua.org/pad?src=IyBFeHBlcmltZW50YWwhCgomc2MKCuKKnCjiipnilqHCsOKKguKKnOKLlSniiaBAXG4swqziirjiiIoiOiAiCgpDaGVjayEg4oaQIHwyIOKNoygKICA94oqZwrDCpAp8IOKNoyjijaQuLkNoZWNrIV4w4o2c4oipKOKHjMKw4ouVKeKMneKKgl4wfOKNpC4uQ2hlY2shXjDijaQuPTDiioPil7_Dt3xDaGVjayFeMC0pIDriipnijZzih4zCsOKKgikKCuKIqSgvK8OXKeKJoSjin5w64p-c4oqDQ2hlY2sh4oiYQ2hlY2shKOKNpC4wKeKKmcKw4pahKQo= "Uiua solution for 2024/07")|[**8**](https://adventofcode.com/2024/day/8) [](Rust/2024/08.rs "Rust solution for 2024/08") [](https://uiua.org/pad?src=JnNjCgriipziiJjiiaBAXG4uCgpWYWxpZCDihpAgL8OXw5fiiKk-wq8xLgpXYWxrICDihpAg4oqZ4ouF4ouF4peM4o2iKOKKgyjiioLiipnil4x84ouF4p-cKyl84ouF4ouFVmFsaWQp4oavMC7iirgtCgriiaEo4pah4qeFPDLiipo9KeKKmcKk4pa94oq44omgQC7il7Tiirjima3in5wowqTCpOKWsykKCkEg4oaQIOKNmuKJoSjilqHilr064p-c4omhVmFsaWTiip_iiKkoK-KKuC0p4pehOsKw4oqfKQpCIOKGkCDijZriiaEo4pah4oqC4oipV2FsayDil6EoOuKKmeKKmeKImCnCsOKKnykKCuKIqSjip7vil7Qv4peH4oqC4o2aL-KXh-KKgikg4oqDQiBBCg== "Uiua solution for 2024/08")| |[**9**](https://adventofcode.com/2024/day/9) [](Rust/2024/09.rs "Rust solution for 2024/09")|[**10**](https://adventofcode.com/2024/day/10) [](Rust/2024/10.rs "Rust solution for 2024/10") [](https://uiua.org/pad?src=JnNjCgriipziiaHii5XiirjiiaBAXG4KCk5laWdoIOKGkCDilr09KzHiirjiiqI64p-c4qyaMOKKoSviioIwW-KXoeKIqcKv4p-c4oeM4oehMl3CpAriiKkvK-KJoSjiiKnip7vin5zil7TiiaHil4fiiqNwYXRoKE5laWdofD054oqhKSniipo9MOKfnMKkCg== "Uiua solution for 2024/10")|[**11**](https://adventofcode.com/2024/day/11) [](Rust/2024/11.rs "Rust solution for 2024/11") [](https://uiua.org/pad?src=JnNjCgriipzii5XiirjiiIorQDDih6ExMAoKTmV4dCAg4oaQIOKNoyjCpDHCsDB84omh4ouV4oavMl_iiJ7CsDDil78y4oq44qe7wrDii5V8wqTDlzIwMjQpCkJsaW5rIOKGkCDiiKco4oinKOKNnOKsmjBnZXQr4oqZOilOZXh0KcKwbWFw4oqZKG1hcC5bXSkKCi8r4o2lQmxpbms1MCDin5wvK-KNpUJsaW5rMjUgbWFw4oqV4oqD4oqi4qe74oq44oqbCg== "Uiua solution for 2024/11")|[**12**](https://adventofcode.com/2024/day/12) [](Rust/2024/12.rs "Rust solution for 2024/12") [](https://uiua.org/pad?src=JnNjCgriipziiJjiirjiiaBAXG4KCuKKnOKWoSsx4oqD4o2c4pmt4oqbKOKHoeKWsykKCkEg4oaQIC8r4omhKC8rwqziiIo6K-KKguKfnMKv4ouvMV8ywqQp4p-cwqQKQiDihpAgKAogIOKXtOKZreKCguKKnistMcOXMuKLr-KHoTTin5zCpMOXMgogIC8r4omhKOKGpeKKgyjil78yLyt8w5cyL8OX4qeI4omgKeKIijorLTHDlzLijZzihpjigoLih4zii6_ih6E0wqQpCikKCuKIqSgvK8OXKeKKmSziiaHil4fiioNCIEEg4p-c4omh4peH4qe7Cg== "Uiua solution for 2024/12")|[**13**](https://adventofcode.com/2024/day/13) [](Rust/2024/13.rs "Rust solution for 2024/13") [](https://uiua.org/pad?src=JnNjCgrihq_iiJ5fM18y4oqc4ouV4oq44oiKK0Aw4oehMTAKCivCpFsuMCAxMDAwMDAwMDAwMDAwMF0uCuKIqSgvK-KJoeKNoygvK8OXM18x4omhKMKvwrAw4oqDL-KXvy_Dt-KniCgvLcOX4oeMKSniip_in5zijZzihpnigoLih4x8MCkpCg== "Uiua solution for 2024/13")|[**14**](https://adventofcode.com/2024/day/14) [](Rust/2024/14.rs "Rust solution for 2024/14") [](https://uiua.org/pad?src=JnNjCgriipzii5XiirjiiIriioJALStAMOKHoTEwCuKGmTLiioLiipkxMDFfMTAz4oqD4oaY4oaZwq_ijZwo4pe_NCnii4Uw4oq44qe7CuKGr-KInl8yXzI6CgpTaW0g4oaQIOKXvzorw5fiipkoOsKw4oqf4qS4wq8yfMKkKQoKQSDihpAgL8OX4oqV4qe7LuKKm-KWveKJoDAvw5fiirjijYnCsS0rMcOXMuKKmcKk4oq4U2ltMTAwCkIg4oaQIOKKouKKmj3iirgv4oan4oy1L-KEguKNieKNnOKMhSjDt-KKg-Knuy8rKSjCsOKImi3CpCku4qS4MVNpbeKHoS_Dl-KkmeKIqcKkCgriioNCIEEK "Uiua solution for 2024/14")|[**15**](https://adventofcode.com/2024/day/15) [](Rust/2024/15.rs "Rust solution for 2024/15") [](https://uiua.org/pad?src=JnNjCgrCsCQiX1xuXG5fIgriipziiJjiirjiiaBAXG4K4oqP4oqX4oqZKCJ2Pl48IuKKguKfnMKv4ouvMV8yKSDilr3iirjiiIoiPD5ediI6CgpOZXh0IOKGkCAoCiAgOuKGr-KKmSgr4peh4ouF4oqZ4ouF4ouF4oiYKeKKuOKIiiJAT1tdIiDiiqHil6Hiipnii4Xii4Xii4XiiJgg4oqZ4oqZ4o2c4oqh4ouFMeKfnDoKICDiioLiqKwo4oqCKzBfMXziioItMF8xfOKXjCniipfiipkoIltdIjopCikKVGFyZ2V0cyDihpAg4oqa4ouF4oqZ4ouF4peM4o2iKOKorChOZXh0fOKXjCniiqHil6Hiipnii4XiiJjCsOKKgnziiaAw4qe7KSDCpOKKmSjiiLXii4UwLCk6Ck1vdmUg4oaQICgKICDCsDAv4oalPUAj4oqh4peh4ouF4oqZ4oiYIOKfnOKKuFRhcmdldHMKICDijZziiqHil4wrwqTiipko4p-c4o2c4oqh4omhKEAu4oiYKSDilr3iiaBALuKXoeKKoSkKKQpTb2x2ZSAg4oaQIC8r4pmtw5fCpDEwMF8x4oqa4oiKIk9bIiDil4ziiKfijaMo4oqDK01vdmV84peMKSDiipko4oqi4oqa4oq4PUBAKQpFeHBhbmQg4oaQIOKNnOKNieKZreKCguKorCgiLi4ifCIjIyJ8IkAuInwiW10iKeKItSjiipfiipkiLiNATyIpCgriiKlTb2x2ZSAsRXhwYW5kLAo= "Uiua solution for 2024/15")| -|[**16**](https://adventofcode.com/2024/day/16) [](Rust/2024/16.rs "Rust solution for 2024/16") [](https://uiua.org/pad?src=JnNjCgriipziiJjiirjiiaBAXG4KClN0ZXAg4oaQICgKICBb4o2cwrDiip_iirgrIOKfnOKNnOKKoyjih4zijZziiqPCrykg4p-c4o2c4oqjKOKNnOKKo8Kv4oeMKV0KICDiiKnihpjin5w6PUAj4oqh4oqZ4qSZ4oqZ4oqZ4peM4oqi4oqiLCBbMSAuMTAwMF0KKQoK4oqf4oqZMF8x4oqi4oqa4oq4PUBTCuKnu-KXtOKKouKkuDEv4peH4oqCIHBhdGgoU3RlcHw9QEXiiqHiiqIpCg== "Uiua solution for 2024/16")|[**17**](https://adventofcode.com/2024/day/17) [](Rust/2024/17.rs "Rust solution for 2024/17") [](https://uiua.org/pad?src=IyBFeHBlcmltZW50YWwhCgomc2MKCuKKg-KGmeKGmDPiipzii5XiirjiiIorQDDih6ExMAoKQ29tYm8g4oaQIOKKj-KKlzrih6EzLTTiipniioLin5w6CgpBZHYg4oaQIOKNnOKKouKNnOKLr_CdhIjihpg64oq4Q29tYm8KQnhsIOKGkCDijZziio_igoHijZziiKnii6_irJow4omgOgpCc3Qg4oaQIOKNnOKKj-KCgeKXjDril7844oq4Q29tYm8KSm56IOKGkCDiqKwo4peMfOKKmSgtMnzil4wpOiniiaAw4oqiLApCeGMg4oaQIOKNnOKGmOKCgeKNnMKw4oqf4oq44o2c4oip4ouv4qyaMOKJoOKXjApPdXQg4oaQIOKKmeKKmeKKmeKKguKkmuKLheKKmeKKmeKKmeKImOKXvzjiirhDb21ibwpCZHYg4oaQIOKNnOKKj-KCgeKXjDrijZzii6_wnYSI4oaY4oqiLOKKuENvbWJvCkNkdiDihpAg4o2c4oqP4oKC4peMOuKNnOKLr_CdhIjihpjiiqIs4oq4Q29tYm8KClN0ZXAg4oaQIOKKmSvigoLiqKwoQWR2fEJ4bHxCc3R8Sm56fEJ4Y3xPdXR8QmR2fENkdikgwrDiip_iio8r4oehMuKXoeKLheKKmeKImApSdW4gIOKGkCDii4Xii4Xil4zijaIoU3RlcHw-4ouF4oqZ4qe7KeKKmSgwfFtdKQoKQ2hlY2sg4oaQIOKJjeKKmeKGmTogwq_iipko4oq4UnVu4o2c4oqi4peMOikKCuKXoCgv4peHKOKKguKKgilALMKw4ouVUnVuKQov4oan4oqj4oqj4o2JIHBhdGgo4pa9OuKfnOKJoShDaGVja8Kw4oqfKeKKmeKIqcKkK-KNieKKnzDih6E4wqTijZzCsOKKn-KKkyvigoHDl-KCiHw94oqT4oqi4ouF4qe7KTBfMAriiKkmcAo= "Uiua solution for 2024/17")|[**18**](https://adventofcode.com/2024/day/18)|[**19**](https://adventofcode.com/2024/day/19)|[**20**](https://adventofcode.com/2024/day/20)|[**21**](https://adventofcode.com/2024/day/21)|[**22**](https://adventofcode.com/2024/day/22)| +|[**16**](https://adventofcode.com/2024/day/16) [](Rust/2024/16.rs "Rust solution for 2024/16") [](https://uiua.org/pad?src=JnNjCgriipziiJjiirjiiaBAXG4KClN0ZXAg4oaQICgKICBb4o2cwrDiip_iirgrIOKfnOKNnOKKoyjih4zijZziiqPCrykg4p-c4o2c4oqjKOKNnOKKo8Kv4oeMKV0KICDiiKnihpjin5w6PUAj4oqh4oqZ4qSZ4oqZ4oqZ4peM4oqi4oqiLCBbMSAuMTAwMF0KKQoK4oqf4oqZMF8x4oqi4oqa4oq4PUBTCuKnu-KXtOKKouKkuDEv4peH4oqCIHBhdGgoU3RlcHw9QEXiiqHiiqIpCg== "Uiua solution for 2024/16")|[**17**](https://adventofcode.com/2024/day/17) [](Rust/2024/17.rs "Rust solution for 2024/17") [](https://uiua.org/pad?src=IyBFeHBlcmltZW50YWwhCgomc2MKCuKKg-KGmeKGmDPiipzii5XiirjiiIorQDDih6ExMAoKQ29tYm8g4oaQIOKKj-KKlzrih6EzLTTiipniioLin5w6CgpBZHYg4oaQIOKNnOKKouKNnOKLr_CdhIjihpg64oq4Q29tYm8KQnhsIOKGkCDijZziio_igoHijZziiKnii6_irJow4omgOgpCc3Qg4oaQIOKNnOKKj-KCgeKXjDril7844oq4Q29tYm8KSm56IOKGkCDiqKwo4peMfOKKmSgtMnzil4wpOiniiaAw4oqiLApCeGMg4oaQIOKNnOKGmOKCgeKNnMKw4oqf4oq44o2c4oip4ouv4qyaMOKJoOKXjApPdXQg4oaQIOKKmeKKmeKKmeKKguKkmuKLheKKmeKKmeKKmeKImOKXvzjiirhDb21ibwpCZHYg4oaQIOKNnOKKj-KCgeKXjDrijZzii6_wnYSI4oaY4oqiLOKKuENvbWJvCkNkdiDihpAg4o2c4oqP4oKC4peMOuKNnOKLr_CdhIjihpjiiqIs4oq4Q29tYm8KClN0ZXAg4oaQIOKKmSvigoLiqKwoQWR2fEJ4bHxCc3R8Sm56fEJ4Y3xPdXR8QmR2fENkdikgwrDiip_iio8r4oehMuKXoeKLheKKmeKImApSdW4gIOKGkCDii4Xii4Xil4zijaIoU3RlcHw-4ouF4oqZ4qe7KeKKmSgwfFtdKQoKQ2hlY2sg4oaQIOKJjeKKmeKGmTogwq_iipko4oq4UnVu4o2c4oqi4peMOikKCuKXoCgv4peHKOKKguKKgilALMKw4ouVUnVuKQov4oan4oqj4oqj4o2JIHBhdGgo4pa9OuKfnOKJoShDaGVja8Kw4oqfKeKKmeKIqcKkK-KNieKKnzDih6E4wqTijZzCsOKKn-KKkyvigoHDl-KCiHw94oqT4oqi4ouF4qe7KTBfMAriiKkmcAo= "Uiua solution for 2024/17")|[**18**](https://adventofcode.com/2024/day/18) [](Rust/2024/18.rs "Rust solution for 2024/18")|[**19**](https://adventofcode.com/2024/day/19)|[**20**](https://adventofcode.com/2024/day/20)|[**21**](https://adventofcode.com/2024/day/21)|[**22**](https://adventofcode.com/2024/day/22)| |[**23**](https://adventofcode.com/2024/day/23)|[**24**](https://adventofcode.com/2024/day/24)|[**25**](https://adventofcode.com/2024/day/25)|26|27|28|29| |30|31|||||| diff --git a/Rust/2024/18.rs b/Rust/2024/18.rs new file mode 100644 index 0000000..81b5d11 --- /dev/null +++ b/Rust/2024/18.rs @@ -0,0 +1,94 @@ +#![feature(test)] + +use std::collections::VecDeque; + +use aoc::grid::Direction; +use itertools::Itertools; + +struct Input { + width: usize, + height: usize, + grid: Vec, + prefix_len: usize, + bytes: Vec<(usize, usize)>, +} + +fn setup(input: &str) -> Input { + let mut lines = input.trim().lines().peekable(); + let (width, height, prefix_len) = match lines.next_if(|l| l.starts_with('#')) { + Some(line) => line + .trim_start_matches('#') + .split_whitespace() + .map(|n| n.parse().unwrap()) + .collect_tuple() + .unwrap(), + None => (71, 71, 1024), + }; + + let bytes = lines + .map(|l| { + l.split(',') + .map(|n| n.parse().unwrap()) + .collect_tuple() + .unwrap() + }) + .collect::>(); + + let mut grid = vec![usize::MAX; width * height]; + for (i, &(x, y)) in bytes.iter().enumerate() { + grid[y * width + x] = i; + } + + Input { + width, + height, + grid, + prefix_len, + bytes, + } +} + +fn bfs(input: &Input, prefix_len: usize) -> Option { + let mut queue = VecDeque::from([(0, 0, 0)]); + let mut visited = vec![false; input.width * input.height]; + while let Some((d, x, y)) = queue.pop_front() { + let idx = y * input.width + x; + if std::mem::replace(&mut visited[idx], true) { + continue; + } + + if (x, y) == (input.width - 1, input.height - 1) { + return Some(d); + } + + queue.extend( + Direction::iter() + .flat_map(|d| d.step(x, y, input.width, input.height)) + .filter(|&(nx, ny)| input.grid[ny * input.width + nx] >= prefix_len) + .map(|(nx, ny)| (d + 1, nx, ny)), + ); + } + + None +} + +fn part1(input: &Input) -> usize { + bfs(input, input.prefix_len).unwrap() +} + +fn part2(input: &Input) -> String { + let mut left = 0; + let mut right = input.bytes.len(); + while left + 1 < right { + let m = left.midpoint(right); + match bfs(input, m) { + Some(_) => left = m, + None => right = m, + } + } + debug_assert_eq!(left + 1, right); + let (x, y) = input.bytes[right - 1]; + format!("{x},{y}") +} + +aoc::main!(2024, 18, ex: 1); diff --git a/Rust/2024/main.rs b/Rust/2024/main.rs index 7a46031..9b4ed5c 100644 --- a/Rust/2024/main.rs +++ b/Rust/2024/main.rs @@ -16,7 +16,7 @@ aoc::year! { "15.rs", "16.rs", "17.rs", - // "18.rs", + "18.rs", // "19.rs", // "20.rs", // "21.rs", diff --git a/Rust/Cargo.toml b/Rust/Cargo.toml index 5e16114..a41bafa 100644 --- a/Rust/Cargo.toml +++ b/Rust/Cargo.toml @@ -411,3 +411,6 @@ path = "2024/16.rs" [[bin]] name = "2024_17" path = "2024/17.rs" +[[bin]] +name = "2024_18" +path = "2024/18.rs" diff --git a/examples/2024/18/1 b/examples/2024/18/1 new file mode 100644 index 0000000..cd45f19 --- /dev/null +++ b/examples/2024/18/1 @@ -0,0 +1,26 @@ +# 7 7 12 +5,4 +4,2 +4,5 +3,0 +2,1 +6,3 +2,4 +1,5 +0,6 +3,3 +2,6 +5,1 +1,2 +5,5 +2,5 +6,5 +1,4 +0,4 +6,4 +1,1 +6,1 +1,0 +0,5 +1,6 +2,0 diff --git a/examples/2024/18/1.1 b/examples/2024/18/1.1 new file mode 100644 index 0000000..2bd5a0a --- /dev/null +++ b/examples/2024/18/1.1 @@ -0,0 +1 @@ +22 diff --git a/examples/2024/18/1.2 b/examples/2024/18/1.2 new file mode 100644 index 0000000..732fa36 --- /dev/null +++ b/examples/2024/18/1.2 @@ -0,0 +1 @@ +6,1