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import java.io.IOException;
import java.io.RandomAccessFile;
import java.util.Arrays;
import java.util.ArrayList;
import java.util.LinkedList;
import java.util.HashSet;
import java.util.regex.Pattern;
import java.util.regex.Matcher;
public class day04 {
public static void main(String args[]) throws IOException {
RandomAccessFile input = new RandomAccessFile("input", "r");
System.out.println("Day 01 Part 1: " + part1(input));
input.seek(0);
System.out.println("Day 01 Part 2: " + part2(input));
input.close();
}
public static String part1(RandomAccessFile input) throws IOException {
String line;
int tot = 0;
while ((line = input.readLine()) != null) {
int points = cardMatches(parseCard(line));
if (points > 0) {
tot += 1 << (points - 1);
}
}
return Integer.toString(tot);
}
public static String part2(RandomAccessFile input) throws IOException {
ArrayList<String[][]> cards = new ArrayList<>();
LinkedList<Integer> queue = new LinkedList<>();
String line;
while ((line = input.readLine()) != null) {
cards.add(parseCard(line));
}
for (int i = 0; i < cards.size(); i++) {
queue.add(i);
}
int tot = 0;
while (queue.size() > 0) {
int id = queue.remove();
int matches = cardMatches(cards.get(id));
for (int i = id + 1; i < id + matches + 1; i++) {
queue.add(i);
}
tot += 1;
}
return Integer.toString(tot);
}
private static String[][] parseCard(String line) {
String[] linea = line.split(": +");
String[] card = linea[1].split(" \\| +");
String[] neednums = card[0].split(" +");
String[] havenums = card[1].split(" +");
return new String[][]{neednums, havenums};
}
private static int cardMatches(String[][] card) {
HashSet<String> winnums = new HashSet<>(Arrays.asList(card[1]));
winnums.retainAll(Arrays.asList(card[0]));
return winnums.size();
}
}
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