#해시를 사용한 집합과 맵 hash_set

#	제목	푼 사람 수	평균 시도
6489	Call Forwarding	5	1.40
6492	Shipping Routes	22	1.14
6495	Ballot evaluation	56	3.23
6513	Deli Deli	64	1.27
6518	오타 자동 수정	25	3.00
6523	요세푸스 한 번 더!	103	2.41
6527	빙고라니!	45	2.64
6566	애너그램 그룹	147	5.73
6577	From Dusk till Dawn (or Vladimir the Vampire)	16	4.63
6583	Balancing Bank Accounts	2	1.00
6589	Heavy Cargo	50	1.94
6623	Arbitrage?	6	1.83
6694	The Perfect Symmetry	14	2.71
6744	Parallelogram Counting	14	4.07
6800	Huffman Encoding	106	1.43
6851	Snowflakes	42	2.17
6861	Attack of the CipherTexts	20	4.40
6945	Surfing	2	11.50
6948	Subsets	18	1.72
6973	Dynamic Dictionary Coding	49	2.73
6999	Guessing Game II	5	4.40
7119	The Magician	12	2.00
7132	Hammasrattad	48	1.21
7167	Tulevärk	4	2.00
7185	IP-aadressid	7	3.43
7260	Cheap flights	7	3.29
7288	Changing Phone Numbers	3	1.67
7403	Game	11	1.18
7437	Lock Manager	5	4.60
7534	Scavenger Hunt	16	1.06
7537	Acid Text	9	7.44
7586	Untied Airlines	75	1.84
7640	Matryoshka Dolls	47	1.47
7785	회사에 있는 사람	21,350	2.44
7800	The Chosen Sub Matrix	73	2.84
7847	Sales Report	27	1.41
7864	Binary Witch	8	2.25
7995	C-algae	6	2.67
8241	Walk	16	5.31
8298	Coins	65	4.49
8356	Chessboard	3	2.33
8385	ROT13	34	2.56
8468	Garden	16	2.25
8529	NumberEater	20	3.45
8538	Bałagan i Stonki	64	1.08
8544	Megawirus	15	3.33
8577	Skrzaty	5	1.60
8600	Pociąg	9	2.22
8618	Taśma	16	1.38
8620	Hurtownia	67	1.54

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