#해시를 사용한 집합과 맵 hash_set

#	제목	푼 사람 수	평균 시도
4675	Word Amalgamation	104	1.50
4680	Sum It Up	45	1.62
4684	Mapmaker	8	1.00
4695	Letter Sequence Analysis	18	3.61
4763	Tangled in Cables	43	1.53
4775	Spelling Be	85	2.38
4822	축구	16	3.13
4848	집합 숫자 표기법	236	1.40
4852	Winter Festival	41	1.32
4866	Squares	20	1.80
4881	자리수의 제곱	166	2.79
4891	Not So Flat After All	35	1.51
4899	Tobo or not Tobo	8	3.00
4915	Let’s Go to the Movies	2	2.00
4939	The Sorcerer’s Donut	15	1.47
4941	Long Distance Taxi	7	2.43
4981	Organize Your Train part II	20	1.15
5021	왕위 계승	469	2.61
5089	Travelling Salesman	201	1.51
5092	Air Old Zeeland	27	1.59
5104	NoMoPhobia	58	1.62
5107	마니또	524	1.81
5134	Grocery Shopping	34	2.12
5181	Overlap!	17	2.59
5263	samba	83	1.42
5349	Duplicate SSN	131	1.34
5366	Total Count	88	1.60
5380	Jumbled Letters	18	3.06
5390	Gene Shuffle	44	1.34
5407	Song contest	1	4.00
5568	카드 놓기	5,112	1.48
5588	별자리 찾기	361	1.42
5593	最古の遺跡	44	1.36
5608	問題 ２	166	1.39
5614	問題 3	89	1.57
5729	수축하는 다각형	55	2.67
5741	Soccer League	28	2.61
5870	Concurrently Balanced Strings	18	1.78
5895	Wrong Directions	26	2.15
5973	Bovine Bridge Battle	32	1.06
6088	Scrabble	10	3.00
6165	Game of Lines	106	2.21
6231	Gold Balanced Lineup	59	2.39
6286	리벤지 오브 피보나치	24	11.88
6296	Crazy Search	48	1.33
6328	Erdös Numbers	23	5.43
6382	N-Credible Mazes	21	1.48
6454	Trip Routing	7	8.29
6474	Palindromes	82	2.48
6485	Inventory Maintenance	9	1.67

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