[CodeChem] Power Marbles

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.*;
import java.util.stream.Collectors;

enum MarbleColor{
    green,
    yellow,
    blue
}
class Game{
    private List<Integer> greenMarbles;
    private List<Integer> yellowMarbles;
    private List<Integer> blueMarbles;
    private int id;

    public static int MOST_YELLOWS = 12;
    public static int MOST_GREENS = 13;
    public static int MOST_BLUES = 14;

    public Game(int id, List<Integer> greenMarbles, List<Integer> yellowMarbles, List<Integer> blueMarbles) {
        this.id = id;
        this.greenMarbles = greenMarbles;
        this.yellowMarbles = yellowMarbles;
        this.blueMarbles = blueMarbles;
    }

    public int multiplyMostOfEveryMarbleType(){
        return this.yellowMarbles.stream().max(Comparator.naturalOrder()).orElse(0)
                * this.greenMarbles.stream().max(Comparator.naturalOrder()).orElse(0)
                * this.blueMarbles.stream().max(Comparator.naturalOrder()).orElse(0);
    }

    public static Game create(String line){
        List<Integer> greenMarbles = new ArrayList<>();
        List<Integer> yellowMarbles = new ArrayList<>();
        List<Integer> blueMarbles = new ArrayList<>();
        String[] parts = line.split(": ");
        String[] idData = parts[0].split("\\s+");
        int id = Integer.parseInt(idData[1]);
        parts = parts[1].split("; ");
        for(String part : parts){
            String[] marblesData = part.split(", ");
            for(String marble : marblesData){
                String[] marbleParts = marble.split(" ");
                int marbleNum = Integer.parseInt(marbleParts[0]);
                MarbleColor marbleColor = MarbleColor.valueOf(marbleParts[1]);
                if(marbleColor == MarbleColor.green)
                    greenMarbles.add(marbleNum);
                else if(marbleColor == MarbleColor.yellow)
                    yellowMarbles.add(marbleNum);
                else
                    blueMarbles.add(marbleNum);
            }
        }
        return new Game(id,greenMarbles,yellowMarbles,blueMarbles);
    }


    public int getId() {
        return id;
    }
}


public class Main {
    public static void solution(String input) {

        List<String> lines = Arrays.asList(input.split("\n"));
        //System.out.println(lines.size());
        List<Game> games = lines.stream().map(i->Game.create(i)).collect(Collectors.toList());
        System.out.println(games.stream()
                .filter(Objects::nonNull)
                .mapToInt(i->i.multiplyMostOfEveryMarbleType()).sum());

    }

    // do not modify the code bellow this line
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String input = "";

        int numberOfLines = Integer.parseInt(scanner.nextLine());

        for (int i=0; i<numberOfLines; i++) {
            input += scanner.nextLine();
            if (i < numberOfLines-1) {
                input += "\n";
            }
        }

        solution(input);
        scanner.close();
    }
}

//input
5
Game 1: 2 blue, 4 yellow; 3 yellow, 2 green, 6 blue; 1 green
Game 2: 2 blue, 1 green; 3 green, 4 blue, 1 yellow; 1 green, 3 blue
Game 3: 3 green, 6 blue, 20 yellow; 5 blue, 6 yellow, 13 green; 5 green, 1 yellow
Game 4: 2 green, 3 yellow, 9 blue; 3 green, 9 yellow; 3 green, 15 blue, 14 yellow
Game 5: 6 yellow, 2 blue, 3 green; 2 blue, 3 yellow, 1 green
//output
2286