public static void getT2(ArrayList<Integer> canA, int y,ArrayList<Integer> candidate) {
		hs.clear();
		HashSet<Integer> yAdj = oneLeap.get(y);
		hs.addAll(yAdj);
		for (Integer i : yAdj)
		{
			yAdj=oneLeap.get(i);
			hs.addAll(yAdj);
		}
		for(Integer c : candidate)
		{
			if(hs.contains(c))//有冲突,hs为canA,和candidate的交集，就是有冲突的点
				canA.add(c);
		}
		//canA.addAll(hs);
	}