import java.util.regex.Pattern;

public class Ranking{
  public static int getPoints(String[] matches, boolean isHomeMatch) {
		int points = 0;
		if(matches.length!=10) {
			return -1;
		}
		
		for (int i = 0; i < matches.length; i++) {
      if(matches[i]==null) {
				return -1;
			}
      
			if (!Pattern.matches("^[0-9]+[-]{1}[0-9]+$", matches[i])) {
				return -1;
			}

			String[] actualMatch = matches[i].split("-");
			if (!isHomeMatch) {
				String aux = actualMatch[0];
				actualMatch[0] = actualMatch[1];
				actualMatch[1] = aux;
			}

			if (Integer.parseInt(actualMatch[0]) > Integer.parseInt(actualMatch[1])) {
				points += 3;
			} else if (Integer.parseInt(actualMatch[0]) == Integer.parseInt(actualMatch[1])) {
				points += 1;
			}
			isHomeMatch = !isHomeMatch;
		}
		return points;
	}
}

import java.util.regex.Pattern;

public class Ranking{
  public static int getPoints(String[] matches, boolean isHomeMatch) {
		int points = 0;
		if(matches.length!=12) {
			return -1;
		}
		
		for (int i = 0; i < matches.length; i++) {
			if (!Pattern.matches("^[0-9]+[-]{1}[0-9]+$", matches[i])) {
				return -1;
			}

			String[] actualMatch = matches[i].split("-");
			if (!isHomeMatch) {
				String aux = actualMatch[0];
				actualMatch[0] = actualMatch[1];
				actualMatch[1] = aux;
			}

			if (Integer.parseInt(actualMatch[0]) > Integer.parseInt(actualMatch[1])) {
				points += 3;
			} else if (Integer.parseInt(actualMatch[0]) == Integer.parseInt(actualMatch[1])) {
				points += 1;
			}
			isHomeMatch = !isHomeMatch;
		}
		return points;
	}
}