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View Compilation Error

0_0_8339861_4604\Main.java:10: 非法的类型开始
	HashMap<Integer, Integer> ls = new HashMap<>();
	                                           ^
0_0_8339861_4604\Main.java:11: 非法的类型开始
	TreeSet<Integer> hand = new TreeSet<>();
	                                    ^
2 错误


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