public static int luckBalance(int canlose, List<List<Integer>> contests) {        
    List<Integer> prioritycontestluck = new ArrayList<>();
    List<Integer> optionalcontestluck = new ArrayList<>();

    for(int i=0;i<contests.size(); i++) {
        List<Integer> lst = contests.get(i);
        int priority = lst.get(1);
        int luck = lst.get(0);
        if(priority==1) {
            prioritycontestluck.add(luck);
        } else {
            optionalcontestluck.add(luck);
        }
    }

    Collections.sort(prioritycontestluck);
    int mustwin = prioritycontestluck.size()-canlose < 0 ? 0 : prioritycontestluck.size()-canlose;
    int maxluck = 0;
    for(int i=0;i<mustwin;i++) {
        maxluck -= prioritycontestluck.get(i);
    }

    for(int i=mustwin;i<prioritycontestluck.size();i++) {
        maxluck += prioritycontestluck.get(i);
    }


    for(int i=0;i<optionalcontestluck.size();i++) {
        maxluck += optionalcontestluck.get(i);
    }
    return maxluck;
}