Initial commit

Author: ath0s

.github/dependabot.yml

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+# Dependabot configuration:
+# https://docs.github.com/en/free-pro-team@latest/github/administering-a-repository/configuration-options-for-dependency-updates
+
+version: 2
+updates:
+  # Maintain dependencies for GitHub Actions
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "daily"

.github/workflows/build.yml

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+name: Build
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  Build:
+    runs-on: ubuntu-latest
+    permissions:
+      checks: write
+      contents: write
+    steps:
+      - name: 🚚 Checkout
+        uses: actions/checkout@v6
+
+      - name: ☕️ Set up JDK
+        uses: actions/setup-java@v5
+        with:
+          java-version: '25'
+          distribution: 'temurin'
+
+      - name: 🐘 Setup Gradle
+        uses: gradle/actions/setup-gradle@v5
+        with:
+          dependency-graph: generate-and-submit
+          add-job-summary: on-failure
+          cache-encryption-key: ${{ secrets.GRADLE_ENCRYPTION_KEY }}
+
+      - name: 🛠 Build
+        run: ./gradlew build --scan
+
+      - name: 💹 Publish Test Report
+        if: always()
+        uses: dorny/test-reporter@v2
+        with:
+          name: 'Test Results'
+          path: '**/build/test-results/test/TEST-*.xml'
+          reporter: 'java-junit'
+          list-suites: 'failed'
+          list-tests: 'failed'
+
+      - name: 📋 Upload build reports
+        uses: actions/upload-artifact@v5
+        if: always()
+        with:
+          name: build-reports
+          path: build/reports/

.gitignore

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+.gradle
+.idea
+.kotlin/
+build
+local.properties

README.md

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+# advent-of-code-2025
+
+Welcome to the Advent of Code[^aoc] Kotlin project created by [ath0s][github] using the [Advent of Code Kotlin Template][template] delivered by JetBrains.
+
+In this repository, ath0s is about to provide solutions for the puzzles using [Kotlin][kotlin] language.
+
+If you're stuck with Kotlin-specific questions or anything related to this template, check out the following resources:
+
+- [Kotlin docs][docs]
+- [Kotlin Slack][slack]
+- Template [issue tracker][issues]
+
+
+[^aoc]:
+    [Advent of Code][aoc] – An annual event of Christmas-oriented programming challenges started December 2015.
+    Every year since then, beginning on the first day of December, a programming puzzle is published every day for twenty-five days.
+    You can solve the puzzle and provide an answer using the language of your choice.
+
+[aoc]: https://adventofcode.com
+[docs]: https://kotlinlang.org/docs/home.html
+[github]: https://github.com/ath0s
+[issues]: https://github.com/kotlin-hands-on/advent-of-code-kotlin-template/issues
+[kotlin]: https://kotlinlang.org
+[slack]: https://surveys.jetbrains.com/s3/kotlin-slack-sign-up
+[template]: https://github.com/kotlin-hands-on/advent-of-code-kotlin-template

build.gradle.kts

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+import org.jetbrains.kotlin.gradle.dsl.JvmTarget.JVM_21
+import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
+
+plugins {
+    kotlin("jvm") version "2.2.21"
+}
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    implementation(kotlin("reflect"))
+
+    testImplementation(platform("org.junit:junit-bom:6.0.1"))
+    testImplementation("org.junit.jupiter:junit-jupiter-params")
+    testImplementation(kotlin("test"))
+
+    testRuntimeOnly("org.junit.platform:junit-platform-launcher")
+}
+
+tasks {
+
+    wrapper {
+        gradleVersion = "9.2.1"
+    }
+
+    withType<JavaCompile> {
+        enabled = false
+        options.release = 21
+    }
+
+    withType<KotlinCompile> {
+        compilerOptions{
+            jvmTarget = JVM_21
+            freeCompilerArgs.add("-Xannotation-default-target=param-property")
+        }
+    }
+
+    test {
+        useJUnitPlatform()
+    }
+
+}

gradle.properties

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+org.gradle.caching=true
+org.gradle.configuration-cache=true

gradle/wrapper/gradle-wrapper.jar

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+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.2.1-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists