Add solution to the second day of AOC-23

advent-of-code-2023/aoc-02/.gitignore

@@ -0,0 +1,43 @@
+.idea
+.gradle
+build/
+!gradle/wrapper/gradle-wrapper.jar
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### IntelliJ IDEA ###
+.idea/modules.xml
+.idea/jarRepositories.xml
+.idea/compiler.xml
+.idea/libraries/
+*.iws
+*.iml
+*.ipr
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store

advent-of-code-2023/aoc-02/build.gradle.kts

@@ -0,0 +1,27 @@
+plugins {
+    kotlin("jvm") version "1.9.0"
+    application
+}
+
+group = "org.example"
+version = "1.0-SNAPSHOT"
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    testImplementation(kotlin("test"))
+}
+
+tasks.test {
+    useJUnitPlatform()
+}
+
+kotlin {
+    jvmToolchain(8)
+}
+
+application {
+    mainClass.set("MainKt")
+}

advent-of-code-2023/aoc-02/gradle.properties

@@ -0,0 +1 @@
+kotlin.code.style=official

advent-of-code-2023/aoc-02/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.2-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

advent-of-code-2023/aoc-02/gradlew

@@ -0,0 +1,234 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
+
+APP_NAME="Gradle"
+APP_BASE_NAME=${0##*/}
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+# Collect all arguments for the java command;
+#   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
+#     shell script including quotes and variable substitutions, so put them in
+#     double quotes to make sure that they get re-expanded; and
+#   * put everything else in single quotes, so that it's not re-expanded.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"

advent-of-code-2023/aoc-02/input.txt

@@ -0,0 +1,100 @@
+Game 1: 20 green, 3 red, 2 blue; 9 red, 16 blue, 18 green; 6 blue, 19 red, 10 green; 12 red, 19 green, 11 blue
+Game 2: 12 green, 3 blue, 16 red; 6 red, 4 blue, 12 green; 11 green, 4 red, 3 blue; 8 green, 15 red, 5 blue
+Game 3: 13 blue, 4 red, 8 green; 2 green, 4 red, 19 blue; 5 blue; 10 blue, 6 green, 2 red; 19 blue; 8 blue, 6 red
+Game 4: 14 green, 8 blue, 10 red; 11 green, 7 blue, 8 red; 8 green, 18 blue, 11 red
+Game 5: 7 red, 7 green, 1 blue; 2 red, 1 green, 2 blue; 2 blue, 7 green; 7 red, 3 blue, 11 green
+Game 6: 3 green, 1 red, 3 blue; 5 green, 19 red, 8 blue; 7 red, 2 green, 10 blue; 1 blue, 1 green, 12 red; 6 blue, 1 green, 16 red
+Game 7: 1 blue; 2 blue, 11 red, 3 green; 1 blue, 7 red; 2 green, 2 red; 3 green, 4 red, 1 blue; 3 blue, 3 green, 9 red
+Game 8: 4 red, 6 green, 4 blue; 4 red, 1 green; 9 blue, 1 green, 11 red
+Game 9: 3 blue, 17 red, 5 green; 8 blue, 9 green, 1 red; 6 green, 2 blue, 2 red
+Game 10: 3 green, 8 blue; 2 green, 2 red, 3 blue; 1 green, 2 red, 1 blue; 1 red, 3 green, 9 blue; 11 blue; 7 blue
+Game 11: 3 red, 3 blue, 9 green; 3 green, 4 red, 8 blue; 1 red, 12 blue; 2 red, 5 blue, 7 green; 11 blue, 2 red, 6 green
+Game 12: 15 green, 3 blue, 1 red; 10 green, 2 blue, 2 red; 2 blue, 15 green; 1 red, 10 green, 2 blue; 16 green, 2 red
+Game 13: 2 green, 3 blue, 5 red; 9 green, 5 blue, 1 red; 10 blue, 4 red
+Game 14: 1 red, 3 green, 20 blue; 8 red, 5 green, 1 blue; 12 blue, 1 green, 2 red; 8 red, 2 green, 2 blue
+Game 15: 14 blue, 3 green, 8 red; 16 red, 10 blue; 2 green, 10 blue, 9 red; 12 red, 3 blue, 2 green; 4 green, 6 red, 4 blue
+Game 16: 9 green, 7 red, 5 blue; 15 green, 4 red; 3 green, 6 red
+Game 17: 1 green, 7 red, 10 blue; 8 blue, 2 red, 1 green; 7 red, 1 green, 9 blue; 1 red
+Game 18: 2 blue, 1 green, 1 red; 9 red, 4 green, 2 blue; 3 green, 10 red, 1 blue
+Game 19: 1 blue, 5 green, 13 red; 8 green, 15 red, 1 blue; 4 green, 6 red, 1 blue; 2 blue, 3 green; 8 red, 2 blue, 9 green
+Game 20: 1 green, 1 blue, 1 red; 7 blue, 2 red; 3 red, 3 blue, 1 green; 2 blue, 2 red
+Game 21: 1 blue, 2 red, 13 green; 13 green, 5 blue, 7 red; 4 green, 13 red, 2 blue
+Game 22: 7 green, 16 red, 6 blue; 1 red, 5 blue, 10 green; 5 blue, 4 green, 14 red; 6 green, 6 blue; 6 blue, 4 green, 2 red
+Game 23: 2 blue, 3 green, 1 red; 2 blue; 3 red, 4 green
+Game 24: 10 red, 6 green, 12 blue; 1 red, 13 blue, 1 green; 7 blue, 9 green, 1 red; 7 red, 7 green, 5 blue
+Game 25: 13 green, 15 blue, 10 red; 14 green, 6 blue, 1 red; 14 green, 5 red, 15 blue; 7 green, 6 red, 14 blue; 6 red, 2 blue, 17 green; 13 blue, 4 red, 4 green
+Game 26: 16 green, 12 blue; 10 blue, 17 green, 3 red; 12 blue, 12 green; 8 blue, 5 green; 1 red, 10 blue, 2 green
+Game 27: 12 blue, 4 red; 12 blue, 2 green, 1 red; 16 blue, 4 red, 1 green; 11 blue, 3 red; 1 green, 3 red, 1 blue
+Game 28: 16 green, 2 blue, 14 red; 7 blue, 9 red, 8 green; 6 blue, 12 green, 19 red; 9 blue, 10 red, 15 green; 19 red, 7 blue, 10 green; 5 green, 6 red, 3 blue
+Game 29: 1 red, 2 green; 11 blue, 5 green, 4 red; 6 red, 6 green, 12 blue; 14 blue, 5 red, 4 green; 5 green, 8 red, 6 blue; 8 blue, 4 red, 4 green
+Game 30: 15 red, 2 blue, 6 green; 4 red, 3 green, 2 blue; 9 blue, 3 green, 16 red; 1 green, 11 blue, 13 red
+Game 31: 2 blue, 4 green, 3 red; 3 red, 3 blue, 4 green; 1 red, 6 blue; 3 red, 6 blue, 2 green; 3 green, 1 red, 6 blue; 7 green, 1 blue, 2 red
+Game 32: 8 green; 3 blue, 14 green; 8 green, 5 blue, 5 red; 6 green, 9 red, 4 blue
+Game 33: 6 red, 10 green; 8 green; 2 blue, 13 green; 3 red, 2 blue, 1 green; 2 red, 3 green; 2 red, 12 green, 1 blue
+Game 34: 1 blue, 12 red, 1 green; 2 blue, 7 red; 9 blue, 1 red, 1 green
+Game 35: 1 blue, 2 green; 3 red, 1 blue; 2 red; 2 green, 5 red; 1 red, 1 green
+Game 36: 12 green, 3 blue, 6 red; 15 green, 10 blue, 3 red; 5 red, 9 green, 14 blue
+Game 37: 2 red, 13 green, 6 blue; 2 green; 17 green, 9 blue, 4 red; 7 blue, 1 red, 2 green
+Game 38: 9 red, 12 blue; 11 blue, 2 red; 5 red; 10 red, 2 blue; 2 blue, 1 green, 13 red
+Game 39: 11 green, 8 red, 17 blue; 3 red, 3 green, 7 blue; 12 blue, 13 red, 11 green; 17 blue, 11 green, 9 red; 8 blue, 12 green, 2 red
+Game 40: 4 green, 2 red; 5 green, 1 blue, 12 red; 11 red, 2 green; 6 red, 1 green
+Game 41: 13 green, 4 red, 1 blue; 9 green, 1 blue, 3 red; 20 red; 3 green, 19 red, 1 blue
+Game 42: 3 green, 1 red, 6 blue; 6 green, 7 blue; 1 red, 11 green, 6 blue; 5 green, 9 blue, 7 red
+Game 43: 2 blue, 9 green, 9 red; 8 red, 2 green, 10 blue; 15 green, 6 blue; 6 red, 2 blue, 2 green; 2 green, 2 blue, 13 red; 7 green, 6 blue, 6 red
+Game 44: 6 blue, 3 green, 3 red; 4 red, 3 blue; 3 red, 4 green
+Game 45: 2 red, 19 blue; 3 red, 19 blue, 17 green; 12 red, 8 green, 19 blue; 14 green, 11 red, 1 blue; 10 red, 8 green, 1 blue; 6 red, 1 blue, 19 green
+Game 46: 4 red; 8 blue, 3 green; 3 red, 3 green, 1 blue; 4 blue, 2 green, 5 red
+Game 47: 5 blue, 9 red, 2 green; 5 blue, 7 green, 6 red; 13 green, 5 blue, 10 red
+Game 48: 8 green, 12 blue, 1 red; 8 green, 9 blue, 2 red; 8 blue, 12 green, 3 red; 5 green, 13 blue, 2 red
+Game 49: 4 red, 18 blue; 4 blue, 3 red, 2 green; 7 red, 2 green, 10 blue; 1 green, 5 red, 5 blue; 6 blue, 4 red
+Game 50: 13 green, 1 blue, 6 red; 1 blue, 1 red, 13 green; 15 green, 2 red; 1 blue, 1 green, 2 red; 5 green, 1 blue, 1 red; 13 green
+Game 51: 1 green, 6 red; 1 green, 3 blue, 6 red; 7 red, 3 blue; 3 blue, 9 red; 2 blue, 2 red
+Game 52: 2 red, 12 green, 9 blue; 8 green, 2 red, 11 blue; 13 blue, 2 red, 10 green; 5 blue, 2 green
+Game 53: 18 red, 13 blue, 3 green; 10 blue, 6 green, 15 red; 7 red, 1 green, 4 blue; 6 blue, 16 red, 10 green
+Game 54: 4 blue, 5 green; 4 green, 4 blue, 2 red; 2 red; 4 green, 1 red
+Game 55: 7 green, 1 red, 4 blue; 2 green, 7 red, 2 blue; 4 blue, 4 red, 2 green; 3 blue; 5 blue, 6 red, 12 green; 13 green
+Game 56: 10 red, 1 green, 6 blue; 1 blue, 4 green; 4 green, 6 blue, 10 red; 7 green, 4 blue; 10 blue, 7 red, 8 green; 7 blue, 1 green
+Game 57: 8 blue, 2 red, 7 green; 8 blue, 1 red, 11 green; 7 blue, 1 green, 7 red; 7 red, 14 green, 5 blue; 7 red, 4 green, 8 blue
+Game 58: 17 green, 1 red; 7 blue, 2 red, 18 green; 4 red, 15 green, 18 blue
+Game 59: 12 green, 6 blue; 10 green, 8 blue, 2 red; 1 red, 11 green, 1 blue; 4 green, 6 blue, 2 red; 5 blue, 1 green, 2 red
+Game 60: 4 green, 2 red; 2 blue, 6 green, 5 red; 1 red, 3 green, 1 blue; 6 blue, 3 green
+Game 61: 1 red, 1 blue; 5 red, 11 blue, 1 green; 1 red, 13 blue, 1 green
+Game 62: 12 green, 5 blue; 1 blue, 5 red, 18 green; 9 green, 2 red, 10 blue; 11 blue, 7 green; 10 green, 4 red, 3 blue
+Game 63: 15 red, 1 blue, 10 green; 2 green, 11 blue, 1 red; 4 blue, 2 green, 9 red
+Game 64: 11 red, 2 blue; 1 blue, 14 red; 2 green, 2 blue, 12 red; 3 red; 13 red, 1 blue; 1 green, 12 red
+Game 65: 10 blue, 1 red; 12 blue, 1 green; 1 green, 3 blue, 1 red
+Game 66: 5 green, 14 blue; 6 green, 9 blue, 1 red; 6 green, 2 blue; 5 green
+Game 67: 2 blue, 1 red; 3 blue, 1 red; 5 blue, 2 red; 2 red, 7 blue, 2 green; 1 green, 2 blue, 2 red
+Game 68: 2 blue, 13 green; 5 green, 1 red; 2 blue, 9 green, 1 red; 18 green, 1 red
+Game 69: 15 green, 8 red, 8 blue; 5 red, 11 green, 2 blue; 9 red, 6 blue, 11 green; 6 green, 4 red, 5 blue
+Game 70: 4 blue, 2 red; 1 red, 1 green, 1 blue; 5 blue, 1 green, 2 red; 1 blue; 1 red, 1 green; 3 blue
+Game 71: 5 red, 2 blue; 1 blue, 4 green; 10 green, 5 red, 2 blue; 2 blue, 6 green, 4 red
+Game 72: 9 blue, 1 green; 1 red, 5 blue; 7 blue, 1 red, 11 green; 3 green, 1 red, 11 blue
+Game 73: 1 green, 1 red, 10 blue; 12 blue; 2 red, 9 blue
+Game 74: 5 blue; 4 blue, 2 red, 8 green; 1 red, 4 blue, 1 green
+Game 75: 9 green, 9 blue, 10 red; 8 blue, 17 green, 1 red; 3 blue, 2 red, 4 green; 10 blue, 8 green, 7 red; 7 blue, 10 red, 5 green
+Game 76: 11 green, 12 blue, 8 red; 11 red, 11 green, 8 blue; 6 red, 9 blue, 14 green; 14 blue, 12 red, 9 green
+Game 77: 1 red, 3 blue, 2 green; 4 green, 5 blue; 1 blue, 1 red; 3 green, 4 blue, 1 red; 5 green, 1 red, 3 blue; 1 red, 2 green
+Game 78: 10 blue, 4 green, 12 red; 6 green, 10 red, 10 blue; 14 blue, 3 green, 8 red; 5 red, 6 green; 4 green; 20 blue, 5 red, 5 green
+Game 79: 13 green; 15 green, 9 blue, 6 red; 5 red, 10 green, 6 blue; 13 green, 6 red, 4 blue
+Game 80: 1 red, 9 blue; 1 green, 10 blue, 3 red; 9 blue, 1 green, 1 red
+Game 81: 2 blue, 1 red; 2 blue, 5 green; 2 red, 7 green, 2 blue; 3 blue; 2 green, 2 red; 7 green, 2 blue, 1 red
+Game 82: 7 red, 12 blue, 4 green; 9 red, 11 green, 8 blue; 10 blue, 8 red, 9 green; 6 red, 2 blue, 7 green; 12 red, 8 green, 9 blue
+Game 83: 14 blue; 10 blue, 3 red, 4 green; 7 blue, 10 green, 2 red; 3 red, 4 blue, 12 green
+Game 84: 12 red, 13 blue, 2 green; 11 red, 3 green, 15 blue; 15 red, 4 green, 5 blue; 1 red, 3 green, 11 blue; 3 green, 4 red, 3 blue
+Game 85: 8 blue, 1 green, 1 red; 1 red, 8 blue, 4 green; 3 red, 13 blue, 8 green
+Game 86: 9 blue, 4 green, 4 red; 4 red, 2 blue, 4 green; 10 red, 2 green; 7 blue, 4 green, 12 red
+Game 87: 1 blue, 9 green, 10 red; 1 red, 11 blue, 2 green; 17 blue, 3 red
+Game 88: 12 red, 6 green, 9 blue; 18 blue, 17 red, 7 green; 16 red, 6 green; 6 green, 5 red, 12 blue
+Game 89: 12 green, 10 blue, 2 red; 4 blue, 15 green, 1 red; 7 green, 11 blue; 12 green, 7 blue, 2 red; 14 blue, 12 green, 2 red
+Game 90: 14 blue, 1 red, 3 green; 3 green, 2 blue, 3 red; 1 red, 16 blue; 1 green, 10 blue
+Game 91: 11 red, 5 green; 5 red, 5 green, 1 blue; 8 red, 1 blue, 4 green; 1 blue, 3 green, 8 red
+Game 92: 19 green, 2 red, 10 blue; 9 blue, 11 green, 4 red; 10 blue, 5 green, 2 red; 3 red, 5 blue, 7 green
+Game 93: 1 green, 7 blue, 5 red; 9 green, 6 red, 13 blue; 11 blue, 12 red, 7 green; 1 red, 12 blue, 7 green
+Game 94: 4 red, 9 green, 1 blue; 11 green, 11 blue, 4 red; 10 red, 17 blue, 11 green; 5 blue, 12 red, 2 green; 14 blue, 6 green, 5 red; 8 green, 19 blue, 13 red
+Game 95: 5 green, 1 blue, 7 red; 3 blue, 14 red, 17 green; 3 blue, 7 red, 9 green; 17 red, 6 green, 1 blue; 17 red, 4 green
+Game 96: 3 red, 10 green; 9 green, 11 red; 2 red, 6 green, 2 blue; 1 blue, 9 red, 1 green; 12 red, 1 blue; 4 green, 12 red
+Game 97: 3 green, 11 red, 1 blue; 3 green, 13 red, 4 blue; 1 green, 3 blue, 12 red; 4 green, 10 red; 4 blue, 10 green, 12 red
+Game 98: 6 blue, 12 red; 17 red, 1 green, 11 blue; 13 blue, 9 red; 9 red, 6 blue, 2 green
+Game 99: 15 green, 1 blue, 11 red; 12 green, 12 blue, 14 red; 12 green, 10 blue, 1 red
+Game 100: 1 green, 11 red, 4 blue; 4 green, 1 red; 9 red, 2 blue; 5 blue, 11 red, 9 green

advent-of-code-2023/aoc-02/readme.md

@@ -0,0 +1,77 @@
+# 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.
+
+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?
+
+## Part Two
+
+The Elf says they've stopped producing snow because they aren't getting any water! He isn't sure why the water stopped;
+however, he can show you how to get to the water source to check it out for yourself. It's just up ahead!
+
+As you continue your walk, the Elf poses a second question: in each game you played,
+what is the fewest number of cubes of each color that could have been in the bag to make the game possible?
+
+Again consider the example games from earlier:
+
+```
+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, the game could have been played with as few as 4 red, 2 green, and 6 blue cubes. If any color had even one fewer cube, the game would have been impossible.
+- Game 2 could have been played with a minimum of 1 red, 3 green, and 4 blue cubes.
+- Game 3 must have been played with at least 20 red, 13 green, and 6 blue cubes.
+- Game 4 required at least 14 red, 3 green, and 15 blue cubes.
+- Game 5 needed no fewer than 6 red, 3 green, and 2 blue cubes in the bag.
+
+The power of a set of cubes is equal to the numbers of red, green, and blue cubes multiplied together.
+The power of the minimum set of cubes in game 1 is 48. In games 2-5 it was 12, 1560, 630, and 36, respectively.
+Adding up these five powers produces the sum 2286.
+
+For each game, find the minimum set of cubes that must have been present. What is the sum of the power of these sets?

advent-of-code-2023/aoc-02/settings.gradle.kts

@@ -0,0 +1,12 @@
+pluginManagement {
+    repositories {
+        mavenCentral()
+        gradlePluginPortal()
+    }
+}
+
+plugins {
+    id("org.gradle.toolchains.foojay-resolver-convention") version "0.5.0"
+}
+
+rootProject.name = "aoc-02"

advent-of-code-2023/aoc-02/src/main/kotlin/Main.kt

@@ -0,0 +1,89 @@
+import java.io.File
+import kotlin.math.max
+
+class CubeCount(var red: Int, var green: Int, var blue: Int) {
+    fun lessOrEqualThan(other: CubeCount): Boolean {
+        return red <= other.red && green <= other.green && blue <= other.blue
+    }
+}
+
+fun main(args: Array<String>) {
+    if (args.size < 4) {
+        println("Usage: <program> <filepath> <red cubes> <green cubes> <blue cubes>")
+        return
+    }
+
+    val cubeCount = CubeCount(args[1].toInt(), args[2].toInt(), args[3].toInt())
+    val games = readGames(args[0])
+
+    println(getSumOfCorrectGameIDs(games, cubeCount))
+    println(getPowerSum(games))
+}
+
+fun readGames(filepath: String): HashMap<Int, ArrayList<CubeCount>> {
+    val games = hashMapOf<Int, ArrayList<CubeCount>>()
+
+    File(filepath).forEachLine {
+        // `it` example: "Game 1: 3 blue, 4 red; 1 red, 2 green, 6 blue; 2 green"
+        val (game, sets) = it.split(": ")
+        val gameID = game.split(" ")[1].toInt()
+        games[gameID] = arrayListOf()
+
+        // setStr example: "3 blue, 4 red"
+        for (setStr in sets.split("; ")) {
+            val gameSet = CubeCount(0,0,0)
+            // cubeStr example: "3 blue"
+            for (cubeStr in setStr.split(", ")) {
+                val (cubeCountStr, color) = cubeStr.split(" ")
+                when (color) {
+                    "blue" -> gameSet.blue = cubeCountStr.toInt()
+                    "red" -> gameSet.red = cubeCountStr.toInt()
+                    "green" -> gameSet.green = cubeCountStr.toInt()
+                }
+            }
+            games[gameID]?.add(gameSet)
+        }
+    }
+
+    return games
+}
+
+fun getSumOfCorrectGameIDs(games: HashMap<Int, ArrayList<CubeCount>>, cubes: CubeCount): Int {
+    var sum = 0
+
+    for (game in games.entries) {
+        var valid = true
+
+        for (count in game.value) {
+            if (!count.lessOrEqualThan(cubes)) {
+                valid = false
+            }
+        }
+
+        if (valid) {
+            sum += game.key
+        }
+    }
+
+    return sum
+}
+
+fun getPowerSum(games: HashMap<Int, ArrayList<CubeCount>>): Int {
+    var sum = 0
+
+    for (game in games.values) {
+        var maxRed = 0
+        var maxGreen = 0
+        var maxBlue = 0
+
+        for (gameSet in game) {
+            maxRed = max(maxRed, gameSet.red)
+            maxGreen = max(maxGreen, gameSet.green)
+            maxBlue = max(maxBlue, gameSet.blue)
+        }
+
+        sum += maxRed * maxGreen * maxBlue
+    }
+
+    return sum
+}

advent-of-code-2023/aoc-02/src/test/kotlin/MainKtTest.kt

@@ -0,0 +1,16 @@
+import kotlin.test.Test
+import kotlin.test.assertEquals
+
+class MainKtTest {
+    @Test
+    fun testGetSumOfCorrectGameIDs() {
+        val res = getSumOfCorrectGameIDs(readGames("test.txt"), CubeCount(12, 13, 14))
+        assertEquals(8, res)
+    }
+
+    @Test
+    fun testGetPowerSum() {
+        val res = getPowerSum(readGames("test.txt"))
+        assertEquals(2286, res)
+    }
+}

advent-of-code-2023/aoc-02/test.txt

@@ -0,0 +1,5 @@
+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