Day 5
This commit is contained in:
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GPG Key ID:
15E168A8B332382C
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@ -23,4 +23,9 @@ I'll probably try to vary languages a bit to get some variety.
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**Note**: This one was re-written because what I initially wrote belongs on [r/programminghorror](https://www.reddit.com/r/programminghorror/).
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**Note**: This one was re-written because what I initially wrote belongs on [r/programminghorror](https://www.reddit.com/r/programminghorror/).
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### [Day 4](day4/)
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### [Day 4](day4/)
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**Language**: Golang
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**Language**: Golang
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### [Day 5](day5/)
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**Language**: Kotlin
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**Note**: Here begin the optimisations! (some people got away with brute force, I decided not to even go there).
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@ -0,0 +1 @@
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out/
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@ -0,0 +1,8 @@
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# Default ignored files
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/shelf/
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/workspace.xml
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# Editor-based HTTP Client requests
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/httpRequests/
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# Datasource local storage ignored files
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/dataSources/
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/dataSources.local.xml
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@ -0,0 +1,12 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<module type="JAVA_MODULE" version="4">
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<component name="NewModuleRootManager" inherit-compiler-output="true">
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<exclude-output />
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<content url="file://$MODULE_DIR$">
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<sourceFolder url="file://$MODULE_DIR$" isTestSource="false" />
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</content>
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<orderEntry type="inheritedJdk" />
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<orderEntry type="sourceFolder" forTests="false" />
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<orderEntry type="library" name="KotlinJavaRuntime" level="project" />
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</component>
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</module>
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@ -0,0 +1,6 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<project version="4">
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<component name="Kotlin2JvmCompilerArguments">
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<option name="jvmTarget" value="1.8" />
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</component>
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</project>
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@ -0,0 +1,23 @@
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<component name="libraryTable">
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<library name="KotlinJavaRuntime" type="repository">
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<properties maven-id="org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.9.21" />
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<CLASSES>
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<root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib-jdk8/1.9.21/kotlin-stdlib-jdk8-1.9.21.jar!/" />
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<root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib/1.9.21/kotlin-stdlib-1.9.21.jar!/" />
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<root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/annotations/13.0/annotations-13.0.jar!/" />
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<root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib-jdk7/1.9.21/kotlin-stdlib-jdk7-1.9.21.jar!/" />
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</CLASSES>
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<JAVADOC>
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<root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib-jdk8/1.9.21/kotlin-stdlib-jdk8-1.9.21-javadoc.jar!/" />
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<root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib/1.9.21/kotlin-stdlib-1.9.21-javadoc.jar!/" />
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<root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/annotations/13.0/annotations-13.0-javadoc.jar!/" />
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<root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib-jdk7/1.9.21/kotlin-stdlib-jdk7-1.9.21-javadoc.jar!/" />
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</JAVADOC>
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<SOURCES>
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<root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib-jdk8/1.9.21/kotlin-stdlib-jdk8-1.9.21-sources.jar!/" />
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<root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib/1.9.21/kotlin-stdlib-1.9.21-sources.jar!/" />
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<root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/annotations/13.0/annotations-13.0-sources.jar!/" />
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<root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib-jdk7/1.9.21/kotlin-stdlib-jdk7-1.9.21-sources.jar!/" />
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</SOURCES>
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</library>
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</component>
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@ -0,0 +1,6 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<project version="4">
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<component name="ProjectRootManager" version="2" languageLevel="JDK_21" project-jdk-name="openjdk-21" project-jdk-type="JavaSDK">
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<output url="file://$PROJECT_DIR$/out" />
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</component>
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</project>
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@ -0,0 +1,8 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<project version="4">
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<component name="ProjectModuleManager">
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<modules>
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<module fileurl="file://$PROJECT_DIR$/.idea/day5.iml" filepath="$PROJECT_DIR$/.idea/day5.iml" />
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</modules>
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</component>
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</project>
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@ -0,0 +1,6 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<project version="4">
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<component name="VcsDirectoryMappings">
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<mapping directory="$PROJECT_DIR$/.." vcs="Git" />
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</component>
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</project>
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@ -0,0 +1,33 @@
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seeds: 79 14 55 13
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seed-to-soil map:
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50 98 2
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52 50 48
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soil-to-fertilizer map:
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0 15 37
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37 52 2
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39 0 15
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fertilizer-to-water map:
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49 53 8
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0 11 42
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42 0 7
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57 7 4
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water-to-light map:
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88 18 7
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18 25 70
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light-to-temperature map:
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45 77 23
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81 45 19
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68 64 13
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temperature-to-humidity map:
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0 69 1
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1 0 69
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humidity-to-location map:
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60 56 37
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56 93 4
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@ -0,0 +1,189 @@
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seeds: 1848591090 462385043 2611025720 154883670 1508373603 11536371 3692308424 16905163 1203540561 280364121 3755585679 337861951 93589727 738327409 3421539474 257441906 3119409201 243224070 50985980 7961058
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seed-to-soil map:
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3305253869 1699909104 39566623
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3344820492 1130725752 384459310
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3244681427 1739475727 60572442
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951517531 1800048169 868898709
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1820416240 951517531 179208221
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1999624461 2668946878 219310925
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3729279802 1515185062 184724042
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2218935386 2898481077 1015522767
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3234458153 2888257803 10223274
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soil-to-fertilizer map:
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1569885498 220184682 161941102
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3711640300 872157831 344226893
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1934701528 0 25420995
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3394438846 2543943059 181930710
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2957858493 2070565336 135870012
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1416178127 25420995 36071868
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1030022714 2029369539 9317803
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1039340517 1216384724 133685745
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695011633 382125784 335011081
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2317056551 1350070469 640801942
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1731826600 2887680679 151926123
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0 3039606802 695011633
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2030497645 2257384153 286558906
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1960122523 2038687342 31877994
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3576369556 2840047597 42331426
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1536338434 4027621785 33547064
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1452249995 3964767856 62853929
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1331718081 787697785 84460046
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4055867193 2882379023 5301656
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3093728505 3734618435 230149421
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1173026262 61492863 158691819
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1883752723 2206435348 50948805
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3618700982 2725873769 92939318
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1515103924 2818813087 21234510
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1992000517 1990872411 38497128
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3323877926 717136865 70560920
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fertilizer-to-water map:
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898769374 211542615 277361469
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2901739042 2299030230 213178977
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207924763 1114173904 26774777
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3752402183 1968349402 71176470
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1176130843 625299169 68863743
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3114918019 3783121220 137843736
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1244994586 488904084 103878858
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3252761755 2915409726 98951129
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2779748334 3652754391 121990708
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3351712884 2593688676 245406043
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0 1252990064 95883380
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2007290234 3920964956 325008750
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3823578653 2039525872 202532901
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2443486939 2512209207 81479469
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4231974038 3371954615 62993258
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3698239076 2242058773 54163107
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2340675105 3014360855 102811834
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4219112930 4245973706 12861108
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4026111554 2839094719 76315007
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3597118927 3434947873 101120149
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2332298984 3774745099 8376121
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95883380 1140948681 112041383
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4102426561 3536068022 116686369
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1968349402 2296221880 2808350
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1971157752 4258834814 36132482
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866253147 592782942 32516227
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446242155 694162912 420010992
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2524966408 3117172689 254781926
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234699540 0 211542615
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water-to-light map:
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3564276417 3073533986 256027539
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540951899 3329561525 136112599
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3123682450 3465674124 119685876
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2479417373 4222809437 72157859
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1957776831 2195006920 74795586
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3089045940 3585360000 28951457
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3820985109 2269802506 288781515
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1285562478 1664965131 530041789
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234319697 234026754 79806762
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3243368326 1344057040 320908091
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3117997397 541633052 5685053
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2551575232 547318105 349893979
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3820303956 540951899 681153
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0 369583040 292943
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314126459 313833516 55749524
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4109766624 2888333314 185200672
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292943 0 234026754
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677064498 3614311457 608497980
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2032572417 897212084 446844956
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2901469211 2700756585 187576729
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1815604267 2558584021 142172564
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light-to-temperature map:
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2658328410 4044901271 250066025
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866264123 157899985 185676775
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2062023507 343576760 307684950
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1535723010 981670684 313982539
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3292868240 2534053678 579746095
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3905180794 3703329819 341571452
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2908394435 3318856014 384473805
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1194970869 1601263273 340752141
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427693043 1299669198 158564104
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748173107 651261710 118091016
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1051940898 1458233302 143029971
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586257147 0 157899985
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4246752246 2485838628 48215050
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1849705549 769352726 212317958
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0 2368902754 805703
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744157132 1295653223 4015975
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805703 1942015414 426887340
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3872614335 3113799773 32566459
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2485838628 3146366232 172489782
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temperature-to-humidity map:
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2731357374 2535823037 72664015
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2987243945 1266132780 17518070
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3983567677 3876954134 113067367
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1669770178 435765631 9597802
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192217183 2087059527 132586479
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324803662 1449340061 36910958
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82239523 1283650850 47718149
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4251710314 3400860374 43256982
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788691045 2012848120 74211407
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139712452 383260900 52504731
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1679367980 1064470362 18439862
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3627675589 3649605531 101947626
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1761484189 1024489895 39980467
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3964889474 4132263773 7628253
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469056934 1486251019 222779936
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3808503415 3992550600 118386133
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4096635044 4139892026 155075270
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0 328658745 54602155
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3929418647 3751553157 35470827
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3729623215 3787023984 78880200
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129957672 2003093340 9754780
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3926889548 3990021501 2529099
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2130123401 3260061108 28438224
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1154320063 445363433 515450115
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2331952939 1331368999 72869773
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2804021389 1082910224 183222556
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1140184340 2219646006 14135723
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3606348549 4110936733 21327040
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3004762015 1709030955 50302777
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1801464656 0 328658745
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691836870 1759333732 96854175
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447785309 2608487052 21271625
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3400860374 3444117356 205488175
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3055064792 2233781729 261071908
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2185047506 1856187907 146905433
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1697807842 960813548 63676347
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361714620 2494853637 40969400
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2404822712 2933526446 326534662
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402684020 1404238772 45101289
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3972517727 3865904184 11049950
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2158561625 2907040565 26485881
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862902452 2629758677 277281888
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54602155 3288499332 27637368
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humidity-to-location map:
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1368371614 3063096196 39876417
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2318920763 3734391855 138926764
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2980019498 3984955289 310012007
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3732521234 1430493364 562446062
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213274662 484132485 78936678
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0 892307918 213274662
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1023610211 575518293 214768297
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2807160244 2776517513 21582263
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2457847527 2833630022 176634966
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3619027057 2663023336 113494177
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2926107621 1368371614 53911877
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1784866635 3524616139 209775716
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2695523574 3873318619 111636670
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1250827638 790286590 102021328
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3290031505 1992939426 224427328
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954760770 415283044 68849441
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1408248031 2286404732 376618604
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292211340 0 415283044
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1994642351 3102972613 324278412
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2642692366 3034347120 28749076
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3514458833 2798099776 35530246
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1238378508 563069163 12449130
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2828742507 3427251025 97365114
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@ -0,0 +1,100 @@
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import java.nio.file.Files
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import java.nio.file.Path
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import kotlin.math.max
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import kotlin.math.min
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class Mapping(val to: String, private val lines: List<MapLine>) {
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fun get(n: Long): Long =
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lines.firstNotNullOfOrNull { it.get(n) } ?: n
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fun getInterval(interval: Interval): List<Interval> =
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lines.mapNotNull { it.getInterval(interval) }.let { intervals ->
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val result = mutableListOf<Interval>()
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var remaining = listOf(interval)
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for ((f, t) in intervals) {
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||||||
|
remaining = remaining.flatMap { it.difference(f) }
|
||||||
|
result.add(t)
|
||||||
|
}
|
||||||
|
result.addAll(remaining)
|
||||||
|
result
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
class MapLine(line: Triple<Long, Long, Long>) {
|
||||||
|
private val interval = Interval(line.second, line.second + line.third - 1)
|
||||||
|
private val offset = line.first - line.second
|
||||||
|
|
||||||
|
fun get(n: Long): Long? =
|
||||||
|
if (interval.start <= n && n <= interval.end) n + offset
|
||||||
|
else null
|
||||||
|
|
||||||
|
fun getInterval(i: Interval): Pair<Interval, Interval>? =
|
||||||
|
interval.overlap(i)?.let {
|
||||||
|
it to it.applyOffset(offset)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
class Interval(val start: Long, val end: Long) {
|
||||||
|
fun overlap(interval: Interval): Interval? {
|
||||||
|
val s = max(interval.start, start)
|
||||||
|
val e = min(interval.end, end)
|
||||||
|
if (s > e) return null
|
||||||
|
return Interval(s, e)
|
||||||
|
}
|
||||||
|
|
||||||
|
fun difference(interval: Interval): List<Interval> {
|
||||||
|
val diffs = mutableListOf<Interval>()
|
||||||
|
if (start < interval.start) {
|
||||||
|
diffs.add(Interval(start, min(interval.start - 1, end)))
|
||||||
|
}
|
||||||
|
if (interval.end < end) {
|
||||||
|
diffs.add(Interval(max(interval.end + 1, start), end))
|
||||||
|
}
|
||||||
|
return diffs
|
||||||
|
}
|
||||||
|
|
||||||
|
fun applyOffset(offset: Long): Interval =
|
||||||
|
Interval(start + offset, end + offset)
|
||||||
|
}
|
||||||
|
|
||||||
|
fun main() {
|
||||||
|
val sections = Files.readString(Path.of("input.txt"))
|
||||||
|
.split("\n\n")
|
||||||
|
val seeds = sections[0].substringAfter(": ")
|
||||||
|
.split(' ')
|
||||||
|
.map { it.toLong() }
|
||||||
|
val mappings = sections.subList(1, sections.size).associate { section ->
|
||||||
|
val lines = section.split('\n')
|
||||||
|
val (from, to) = lines[0].substringBefore(" map:")
|
||||||
|
.split("-to-")
|
||||||
|
val map = Mapping(to, lines.subList(1, lines.size).map { line ->
|
||||||
|
val (a, b, c) = line.split(' ').map { it.toLong() }
|
||||||
|
MapLine(Triple(a, b, c))
|
||||||
|
})
|
||||||
|
from to map
|
||||||
|
}
|
||||||
|
val p1 = seeds.minOf { s ->
|
||||||
|
var category = "seed"
|
||||||
|
var n = s
|
||||||
|
while (category != "location") {
|
||||||
|
val mapping = mappings[category]!!
|
||||||
|
n = mapping.get(n)
|
||||||
|
category = mapping.to
|
||||||
|
}
|
||||||
|
n
|
||||||
|
}
|
||||||
|
println("Part 1: $p1")
|
||||||
|
|
||||||
|
val p2 = run {
|
||||||
|
var category = "seed"
|
||||||
|
var intervals = seeds.chunked(2)
|
||||||
|
.map { (s, l) -> Interval(s, s + l - 1) }
|
||||||
|
while (category != "location") {
|
||||||
|
val mapping = mappings[category]!!
|
||||||
|
intervals = intervals.flatMap { mapping.getInterval(it) }
|
||||||
|
category = mapping.to
|
||||||
|
}
|
||||||
|
intervals.minOf { it.start }
|
||||||
|
}
|
||||||
|
println("Part 2: $p2")
|
||||||
|
}
|
||||||
Loading…
Reference in New Issue