.

19/Day 19/.vscode/settings.json

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+{
+    "java.project.sourcePaths": ["src"],
+    "java.project.outputPath": "bin",
+    "java.project.referencedLibraries": [
+        "lib/**/*.jar"
+    ]
+}

19/Day 19/README.md

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+## Getting Started
+
+Welcome to the VS Code Java world. Here is a guideline to help you get started to write Java code in Visual Studio Code.
+
+## Folder Structure
+
+The workspace contains two folders by default, where:
+
+- `src`: the folder to maintain sources
+- `lib`: the folder to maintain dependencies
+
+Meanwhile, the compiled output files will be generated in the `bin` folder by default.
+
+> If you want to customize the folder structure, open `.vscode/settings.json` and update the related settings there.
+
+## Dependency Management
+
+The `JAVA PROJECTS` view allows you to manage your dependencies. More details can be found [here](https://github.com/microsoft/vscode-java-dependency#manage-dependencies).

19/Day 19/src/main.java

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+import java.io.IOException;
+import java.io.RandomAccessFile;
+
+public class main {
+    public static void main(String[] args) throws IOException {
+        RandomAccessFile file = new RandomAccessFile("input.txt", "r");
+        String str;
+        
+        //Part 1
+        System.out.print("Part 1: ");
+
+        while ((str = file.readLine()) != null) {
+            System.out.println(str);
+            int blueprintID = Integer.typeOf(str.substring(11,12));
+            int costOfOreRobot = str.subString();
+            simulateRobotWithBlueprints();
+        }
+        //Part 2
+        System.out.print("Part 2: ");
+    }
+
+    public int simulateRobotWithBlueprints(int costOfOreRobot, int costOfClayRobot, int costOfObsidianRobot, int costOfGeodeRobot, int timeInMinutes) {
+        int maximumNumberOfOpenedGeodes = 0;
+        
+        return maximumNumberOfOpenedGeodes;
+    }
+}

19/input.txt

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+Blueprint 1: Each ore robot costs 3 ore. Each clay robot costs 4 ore. Each obsidian robot costs 4 ore and 18 clay. Each geode robot costs 3 ore and 8 obsidian.
+Blueprint 2: Each ore robot costs 4 ore. Each clay robot costs 4 ore. Each obsidian robot costs 2 ore and 18 clay. Each geode robot costs 4 ore and 20 obsidian.
+Blueprint 3: Each ore robot costs 3 ore. Each clay robot costs 4 ore. Each obsidian robot costs 4 ore and 18 clay. Each geode robot costs 4 ore and 12 obsidian.
+Blueprint 4: Each ore robot costs 4 ore. Each clay robot costs 4 ore. Each obsidian robot costs 4 ore and 20 clay. Each geode robot costs 2 ore and 8 obsidian.
+Blueprint 5: Each ore robot costs 2 ore. Each clay robot costs 3 ore. Each obsidian robot costs 2 ore and 14 clay. Each geode robot costs 3 ore and 8 obsidian.
+Blueprint 6: Each ore robot costs 3 ore. Each clay robot costs 3 ore. Each obsidian robot costs 3 ore and 17 clay. Each geode robot costs 4 ore and 8 obsidian.
+Blueprint 7: Each ore robot costs 4 ore. Each clay robot costs 3 ore. Each obsidian robot costs 4 ore and 6 clay. Each geode robot costs 3 ore and 11 obsidian.
+Blueprint 8: Each ore robot costs 2 ore. Each clay robot costs 4 ore. Each obsidian robot costs 4 ore and 20 clay. Each geode robot costs 4 ore and 18 obsidian.
+Blueprint 9: Each ore robot costs 3 ore. Each clay robot costs 4 ore. Each obsidian robot costs 4 ore and 16 clay. Each geode robot costs 3 ore and 15 obsidian.
+Blueprint 10: Each ore robot costs 4 ore. Each clay robot costs 4 ore. Each obsidian robot costs 3 ore and 7 clay. Each geode robot costs 4 ore and 11 obsidian.
+Blueprint 11: Each ore robot costs 4 ore. Each clay robot costs 4 ore. Each obsidian robot costs 2 ore and 9 clay. Each geode robot costs 3 ore and 19 obsidian.
+Blueprint 12: Each ore robot costs 4 ore. Each clay robot costs 3 ore. Each obsidian robot costs 2 ore and 17 clay. Each geode robot costs 3 ore and 16 obsidian.
+Blueprint 13: Each ore robot costs 3 ore. Each clay robot costs 4 ore. Each obsidian robot costs 4 ore and 5 clay. Each geode robot costs 3 ore and 12 obsidian.
+Blueprint 14: Each ore robot costs 3 ore. Each clay robot costs 3 ore. Each obsidian robot costs 3 ore and 8 clay. Each geode robot costs 2 ore and 12 obsidian.
+Blueprint 15: Each ore robot costs 4 ore. Each clay robot costs 4 ore. Each obsidian robot costs 3 ore and 7 clay. Each geode robot costs 3 ore and 20 obsidian.
+Blueprint 16: Each ore robot costs 3 ore. Each clay robot costs 3 ore. Each obsidian robot costs 2 ore and 11 clay. Each geode robot costs 2 ore and 19 obsidian.
+Blueprint 17: Each ore robot costs 4 ore. Each clay robot costs 4 ore. Each obsidian robot costs 2 ore and 10 clay. Each geode robot costs 3 ore and 14 obsidian.
+Blueprint 18: Each ore robot costs 3 ore. Each clay robot costs 4 ore. Each obsidian robot costs 3 ore and 12 clay. Each geode robot costs 3 ore and 17 obsidian.
+Blueprint 19: Each ore robot costs 4 ore. Each clay robot costs 4 ore. Each obsidian robot costs 4 ore and 7 clay. Each geode robot costs 2 ore and 19 obsidian.
+Blueprint 20: Each ore robot costs 2 ore. Each clay robot costs 3 ore. Each obsidian robot costs 2 ore and 17 clay. Each geode robot costs 3 ore and 19 obsidian.
+Blueprint 21: Each ore robot costs 4 ore. Each clay robot costs 3 ore. Each obsidian robot costs 2 ore and 14 clay. Each geode robot costs 4 ore and 11 obsidian.
+Blueprint 22: Each ore robot costs 4 ore. Each clay robot costs 3 ore. Each obsidian robot costs 4 ore and 15 clay. Each geode robot costs 4 ore and 9 obsidian.
+Blueprint 23: Each ore robot costs 4 ore. Each clay robot costs 4 ore. Each obsidian robot costs 3 ore and 9 clay. Each geode robot costs 3 ore and 7 obsidian.
+Blueprint 24: Each ore robot costs 4 ore. Each clay robot costs 4 ore. Each obsidian robot costs 4 ore and 15 clay. Each geode robot costs 4 ore and 17 obsidian.
+Blueprint 25: Each ore robot costs 4 ore. Each clay robot costs 4 ore. Each obsidian robot costs 4 ore and 9 clay. Each geode robot costs 2 ore and 20 obsidian.
+Blueprint 26: Each ore robot costs 3 ore. Each clay robot costs 4 ore. Each obsidian robot costs 3 ore and 20 clay. Each geode robot costs 3 ore and 14 obsidian.
+Blueprint 27: Each ore robot costs 2 ore. Each clay robot costs 4 ore. Each obsidian robot costs 2 ore and 15 clay. Each geode robot costs 3 ore and 16 obsidian.
+Blueprint 28: Each ore robot costs 2 ore. Each clay robot costs 3 ore. Each obsidian robot costs 3 ore and 8 clay. Each geode robot costs 3 ore and 20 obsidian.
+Blueprint 29: Each ore robot costs 3 ore. Each clay robot costs 4 ore. Each obsidian robot costs 2 ore and 14 clay. Each geode robot costs 3 ore and 14 obsidian.
+Blueprint 30: Each ore robot costs 4 ore. Each clay robot costs 3 ore. Each obsidian robot costs 4 ore and 18 clay. Each geode robot costs 3 ore and 13 obsidian.

19/main.java

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+import java.io.IOException;
+import java.io.RandomAccessFile;
+
+public class main {
+    public static void main(String[] args) throws IOException {
+        RandomAccessFile file = new RandomAccessFile("input.txt", "r");
+        String str;
+        
+        //Part 1
+        System.out.print("Part 1: ");
+
+        while ((str = file.readLine()) != null) {
+            System.out.println(str);
+            int blueprintID = Integer.typeOf(str.subString(11,12));
+            int costOfOreRobot = str.subString();
+            simulateRobotWithBlueprints();
+        }
+        //Part 2
+        System.out.print("Part 2: ");
+    }
+
+    public int simulateRobotWithBlueprints(int costOfOreRobot, int costOfClayRobot, int costOfObsidianRobot, int costOfGeodeRobot, int timeInMinutes) {
+        int maximumNumberOfOpenedGeodes = 0;
+        
+        return maximumNumberOfOpenedGeodes;
+    }
+}