restructure input files

pom.xml

@@ -30,7 +30,7 @@
             <plugin>
                 <groupId>org.jetbrains.kotlin</groupId>
                 <artifactId>kotlin-maven-plugin</artifactId>
-                <version>1.7.10</version>
+                <version>1.7.22</version>
                 <executions>
                     <execution>
                         <id>compile</id>
@@ -41,6 +41,14 @@
                     </execution>
                 </executions>
             </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <configuration>
+                    <source>19</source>
+                    <target>19</target>
+                </configuration>
+            </plugin>
         </plugins>
     </build>
 
@@ -48,7 +56,7 @@
         <dependency>
             <groupId>org.jetbrains.kotlin</groupId>
             <artifactId>kotlin-stdlib-jdk8</artifactId>
-            <version>1.7.10</version>
+            <version>1.7.22</version>
         </dependency>
     </dependencies>
 

src/main/kotlin/Day1.kt

@@ -6,7 +6,7 @@ fun main() {
 }
 
 fun solveDay1() {
-    val text = File("input/day1/input").readText()
+    val text = File("input/day1").readText()
     val elvCalories = text.split("\n\n").map { it.trim() }
     val summedCalories = elvCalories
         .map {

src/main/kotlin/Day2.kt

@@ -6,7 +6,7 @@ fun main() {
 }
 
 fun solveDay2() {
-    val lines = File("input/day2/input").readLines()
+    val lines = File("input/day2").readLines()
     val scores1 = lines.map { l ->
         val s = l.split(" ")
         scorePart1(s[0], s[1])

src/main/kotlin/Day3.kt

@@ -6,7 +6,7 @@ fun main() {
 }
 
 fun solveDay3() {
-    val part1 = File("input/day3/input").readLines()
+    val part1 = File("input/day3").readLines()
         .map { solveRucksack1(it) }
         .sum()
     println(part1)