math - Problem Set - HFOJ

	ID	Problem Show tags Hide tags	AC / Tried	Difficulty
	6878	P662D International Olympiad constructive algorithms greedy implementation math *2000	0 / 0	7
	6876	P663A Rebus constructive algorithms expression parsing greedy math *1800	0 / 0	6
	6875	P664A Complicated GCD math number theory *800	0 / 0	3
	6869	P665F Four Divisors data structures dp math number theory sortings two pointers *2400	0 / 0	9
	6863	P667A Pouring Rain geometry math *1100	0 / 0	3
	6861	P669A Little Artem and Presents math *800	0 / 0	3
	6860	P670A Holidays brute force constructive algorithms greedy math *900	0 / 0	3
	6844	P675A Infinite Sequence math *1100	0 / 0	3
	6843	P675B Restoring Painting brute force constructive algorithms math *1400	0 / 0	4
	6838	P676B Pyramid of Glasses implementation math math *1500	0 / 0	5
	6835	P676E The Last Fight Between Human and AI math *2400	0 / 0	9
	6833	P677B Vanya and Food Processor implementation math *1400	0 / 0	4
	6829	P678A Johny Likes Numbers implementation math *800	0 / 0	3
	6827	P678C Joty and Chocolate implementation math number theory *1600	0 / 0	5
	6826	P678D Iterated Linear Function math number theory *1700	0 / 0	5
	6825	P678E Another Sith Tournament bitmasks dp math probabilities *2200	0 / 0	8
	6823	P679A Bear and Prime 100 constructive algorithms interactive math *1400	0 / 0	4
	6820	P679D Bear and Chase brute force dfs and similar graphs implementation math probabilities *2900	0 / 0	10
	6811	P682A Alyona and Numbers constructive algorithms math number theory *1100	0 / 0	3
	6803	P683D Chocolate Bar special problem math 1400	0 / 0	4
	6796	P685A Robbers' watch brute force combinatorics dp math *1700	0 / 0	5
	6794	P685C Optimal Point binary search math *2900	0 / 0	10
	6788	P687B Remainders Game chinese remainder theorem math number theory *1800	0 / 0	6
	6783	P688B Lovely Palindromes constructive algorithms math *1000	0 / 0	3
	6780	P689C Mike and Chocolate Thieves binary search combinatorics math *1700	0 / 0	5
	6757	P691D Swaps in Permutation dfs and similar dsu math *1700	0 / 0	5
	6753	P696B Puzzles dfs and similar math probabilities trees *1700	0 / 0	5
	6752	P696C PLEASE combinatorics dp implementation math matrices *2000	0 / 0	7
	6748	P697A Pineapple Incident implementation math *900	0 / 0	3
	6747	P697B Barnicle brute force implementation math strings *1400	0 / 0	4
	6744	P698C LRU bitmasks dp math probabilities *2400	0 / 0	9
	6743	P698D Limak and Shooting Points brute force geometry math *2600	0 / 0	10
	6738	P700A As Fast As Possible binary search math *1900	0 / 0	6
	6732	P701B Cells Not Under Attack data structures math *1200	0 / 0	4
	6729	P702B Powers of Two brute force data structures implementation math *1500	0 / 0	5
	6727	P702D Road to Post Office math *1900	0 / 0	6
	6723	P703B Mishka and trip implementation math *1400	0 / 0	4
	6717	P704C Black Widow dp graphs implementation math *2900	0 / 0	10
	6713	P705B Spider Man games math *1100	0 / 0	3
	6705	P707C Pythagorean Triples math number theory *1500	0 / 0	5
	6701	P708B Recover the String constructive algorithms greedy implementation math *1900	0 / 0	6
	6698	P708E Student's Camp dp math *3100	1 / 1	10
	6693	P710C Magic Odd Square constructive algorithms math *1500	1 / 2	5
	6692	P710D Two Arithmetic Progressions math number theory *2500	0 / 0	9
	6686	P711D Directed Roads combinatorics dfs and similar graphs math *1900	0 / 0	6
	6685	P711E ZS and The Birthday Paradox math number theory probabilities *2300	0 / 0	8
	6684	P712A Memory and Crow implementation math *800	0 / 0	3
	6682	P712C Memory and De-Evolution greedy math *1600	0 / 0	5
	6681	P712D Memory and Scores combinatorics dp math *2200	0 / 0	8
	6680	P712E Memory and Casinos data structures math probabilities *2500	0 / 0	9
	6674	P714A Meeting of Old Friends implementation math *1100	0 / 0	3
	6672	P715A Plus and Square Root constructive algorithms math *1600	0 / 0	5
	6668	P715E Complete the Permutations combinatorics fft graphs math *3400	0 / 0	10
	6665	P717A Festival Organization combinatorics math number theory *2900	0 / 0	10
	6658	P717H Pokermon League challenge math probabilities *2400	0 / 0	9
	6656	P718A Efim and Strange Grade dp implementation math *1700	0 / 0	5
	6655	P718C Sasha and Array data structures math matrices *2300	0 / 0	8
	6643	P721B Passwords implementation math sortings strings *1100	0 / 0	3
	6641	P721D Maxim and Array constructive algorithms data structures greedy math *2000	0 / 0	7
	6633	P723A The New Year: Meeting Friends implementation math sortings *800	0 / 0	3
	6626	P724B Batch Sort brute force greedy implementation math *1500	0 / 0	5
	6625	P724C Ray Tracing greedy hashing implementation math number theory sortings *1800	0 / 0	6
	6621	P724G Xor-matic Number of the Graph bitmasks graphs math number theory trees *2600	0 / 0	10
	6619	P725B Food on the Plane implementation math *1200	0 / 0	4
	6613	P727A Transformation: from A to B brute force dfs and similar math *1000	0 / 0	3
	6611	P727C Guess the Array constructive algorithms interactive math *1400	0 / 0	4
	6604	P729D Sea Battle constructive algorithms greedy math *1700	0 / 0	5
	6598	P730D Running Over The Bridges greedy implementation math *2200	0 / 0	8
	6584	P731F Video Cards brute force data structures implementation math number theory *1900	0 / 0	6
	6583	P732A Buy a Shovel brute force constructive algorithms implementation math *800	0 / 0	3
	6581	P732C Sanatorium binary search constructive algorithms greedy implementation math *1200	0 / 0	4
	6576	P733B Parade math *1100	0 / 0	3
	6573	P733E Sleep in Class constructive algorithms data structures math two pointers *2400	0 / 0	9
	6570	P734B Anton and Digits brute force greedy implementation math *800	0 / 0	3
	6566	P734F Anton and School bitmasks constructive algorithms implementation math *2500	0 / 0	9
	6563	P735C Tennis Championship combinatorics constructive algorithms greedy math *1600	0 / 0	5
	6562	P735D Taxes math number theory *1600	0 / 0	5
	6560	P736D Permutations math matrices *2800	0 / 0	10
	6559	P736E Chess Championship constructive algorithms flows greedy math *2900	0 / 0	10
	6557	P737F Dirty plates constructive algorithms math *3300	0 / 0	10
	6552	P739E Gosha is hunting brute force data structures dp flows math probabilities sortings *3000	0 / 0	10
	6549	P741A Arpa's loud Owf and Mehrdad's evil plan dfs and similar math *1600	0 / 0	5
	6544	P742A Arpa’s hard exam and Mehrdad’s naive cheat implementation math number theory *1000	0 / 0	3
	6543	P742B Arpa’s obvious problem and Mehrdad’s terrible solution brute force math number theory *1500	0 / 0	5
	6540	P743C Vladik and fractions brute force constructive algorithms math number theory *1500	0 / 0	5
	6530	P746A Compote implementation math *800	0 / 0	3
	6528	P746C Tram constructive algorithms implementation math *1600	0 / 0	5
	6527	P746D Green and Black Tea constructive algorithms greedy math *1500	0 / 0	5
	6526	P746E Numbers Exchange greedy implementation math *1900	0 / 0	6
	6523	P747A Display Size brute force math *800	0 / 0	3
	6518	P747F Igor and Interesting Numbers brute force combinatorics dp math *2500	0 / 0	9
	6517	P748A Santa Claus and a Place in a Class implementation math *800	0 / 0	3
	6515	P748C Santa Claus and Robot constructive algorithms math *1400	0 / 0	4
	6511	P749A Bachgold Problem greedy implementation math number theory *800	0 / 0	3
	6506	P750A New Year and Hurry binary search brute force implementation math *800	0 / 0	3
	6504	P750C New Year and Rating binary search greedy math *1600	0 / 0	5
	6498	P753A Santa Claus and Candies dp greedy math *1000	0 / 0	3
	6490	P755A PolandBall and Hypothesis brute force graphs math number theory *800	0 / 0	3
	6484	P755G PolandBall and Many Other Balls combinatorics divide and conquer dp fft math number theory *3200	0 / 0	10
	6479	P756E Byteland coins combinatorics dp math *3200	0 / 0	10

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