Problem Set - HFOJ

	ID	Problem Show tags Hide tags	AC / Tried	Difficulty
	7297	P567B Berland National Library implementation *1300	0 / 0	4
	7296	P567C Geometric Progression binary search data structures dp *1700	0 / 0	5
	7295	P567D One-Dimensional Battle Ships binary search data structures greedy sortings *1700	0 / 0	5
	7294	P567E President and Roads dfs and similar graphs hashing shortest paths *2200	0 / 0	8
	7293	P567F Mausoleum dp *2400	0 / 0	9
	7292	P568A Primes or Palindromes? brute force implementation math number theory *1600	0 / 0	5
	7291	P568B Symmetric and Transitive combinatorics dp math *1900	0 / 0	6
	7290	P568C New Language 2-sat greedy *2600	0 / 0	10
	7289	P568D Sign Posts brute force geometry math *2800	0 / 0	10
	7288	P568E Longest Increasing Subsequence data structures dp *3000	0 / 0	10
	7287	P569A Music implementation math *1500	0 / 0	5
	7286	P569B Inventory greedy math *1200	0 / 0	4
	7285	P570A Elections implementation *1100	0 / 0	3
	7284	P570B Simple Game constructive algorithms games greedy implementation math *1300	0 / 1	4
	7283	P570C Replacement constructive algorithms data structures implementation *1600	0 / 0	5
	7282	P570D Tree Requests binary search bitmasks constructive algorithms dfs and similar graphs trees *2200	0 / 0	8
	7281	P570E Pig and Palindromes combinatorics dp *2300	0 / 0	8
	7280	P571A Lengthening Sticks combinatorics implementation math *2100	0 / 0	7
	7279	P571B Minimization dp greedy sortings *2000	0 / 0	7
	7278	P571C CNF 2 constructive algorithms dfs and similar graphs greedy *2500	0 / 0	9
	7277	P571D Campus binary search data structures dsu trees *3100	0 / 0	10
	7276	P571E Geometric Progressions math *3200	0 / 0	10
	7275	P572A Arrays sortings *900	0 / 0	3
	7274	P572B Order Book data structures greedy implementation sortings *1300	0 / 0	4
	7273	P573A Bear and Poker implementation math number theory *1300	0 / 0	4
	7272	P573B Bear and Blocks binary search data structures dp math *1600	0 / 0	5
	7271	P573C Bear and Drawing constructive algorithms dfs and similar trees *2300	0 / 0	8
	7270	P573D Bear and Cavalry data structures divide and conquer dp *3000	0 / 0	10
	7269	P573E Bear and Bowling data structures greedy *3200	0 / 0	10
	7268	P574A Bear and Elections greedy implementation *1200	0 / 0	4
	7267	P574B Bear and Three Musketeers brute force dfs and similar graphs hashing *1500	0 / 0	5
	7266	P575A Fibonotci data structures math matrices *2700	0 / 0	10
	7265	P575B Bribes dfs and similar graphs trees *2200	0 / 0	8
	7264	P575C Party bitmasks brute force graph matchings *2700	0 / 0	10
	7263	P575D Tablecity constructive algorithms implementation *1700	0 / 0	5
	7262	P575E Spectator Riots geometry *2800	0 / 0	10
	7261	P575F Bulbo dp greedy *2100	0 / 0	7
	7260	P575G Run for beer dfs and similar shortest paths *2200	0 / 0	8
	7259	P575H Bots combinatorics dp math number theory *1800	0 / 0	6
	7258	P575I Robots protection data structures *2800	0 / 0	10
	7257	P576A Vasya and Petya's Game math number theory *1500	0 / 0	5
	7256	P576B Invariance of Tree constructive algorithms dfs and similar greedy trees *2100	0 / 0	7
	7255	P576C Points on Plane constructive algorithms divide and conquer geometry greedy sortings *2100	0 / 0	7
	7254	P576D Flights for Regular Customers dp matrices *2700	0 / 0	10
	7253	P576E Painting Edges binary search data structures *3300	0 / 0	10
	7252	P577A Multiplication Table implementation number theory *1000	0 / 0	3
	7251	P577B Modulo Sum combinatorics data structures dp two pointers *1900	0 / 0	6
	7250	P578A A Problem about Polyline geometry math *1700	0 / 0	5
	7249	P578B "Or" Game brute force greedy *1700	0 / 0	5
	7248	P578C Weakness and Poorness ternary search *2000	0 / 0	7
	7247	P578D LCS Again dp greedy *2700	0 / 0	10
	7246	P578E Walking! constructive algorithms greedy *2700	0 / 0	10
	7245	P578F Mirror Box matrices trees *3200	0 / 0	10
	7244	P579A Raising Bacteria bitmasks *1000	0 / 0	3
	7243	P579B Finding Team Member brute force implementation sortings *1300	0 / 0	4
	7242	P580A Kefa and First Steps brute force dp implementation *900	0 / 0	3
	7241	P580B Kefa and Company binary search sortings two pointers *1500	0 / 0	5
	7240	P580C Kefa and Park dfs and similar graphs trees *1500	0 / 0	5
	7239	P580D Kefa and Dishes bitmasks dp *1800	0 / 0	6
	7238	P580E Kefa and Watch data structures hashing strings *2500	0 / 0	9
	7237	P581A Vasya the Hipster implementation math *800	0 / 0	3
	7236	P581B Luxurious Houses implementation math *1100	0 / 0	3
	7235	P581C Developing Skills implementation math sortings *1400	0 / 0	4
	7234	P581D Three Logos bitmasks brute force constructive algorithms geometry implementation math *1700	0 / 0	5
	7233	P581E Kojiro and Furrari dp greedy *2800	0 / 0	10
	7232	P581F Zublicanes and Mumocrates dp trees two pointers *2400	0 / 0	9
	7231	P582A GCD Table constructive algorithms greedy number theory *1700	1 / 1	5
	7230	P582B Once Again... constructive algorithms dp matrices *1900	0 / 0	6
	7229	P582C Superior Periodic Subarrays number theory *2400	0 / 0	9
	7228	P582D Number of Binominal Coefficients dp math number theory *3300	0 / 0	10
	7227	P582E Boolean Function bitmasks dp expression parsing *3000	0 / 0	10
	7226	P583A Asphalting Roads implementation *1000	0 / 0	3
	7225	P583B Robot's Task greedy implementation *1200	0 / 0	4
	7224	P584A Olesya and Rodion math *1000	0 / 0	3
	7223	P584B Kolya and Tanya combinatorics *1500	0 / 0	5
	7222	P584C Marina and Vasya constructive algorithms greedy strings *1700	0 / 0	5
	7221	P584D Dima and Lisa brute force math number theory *1800	0 / 0	6
	7220	P584E Anton and Ira constructive algorithms greedy math *2300	0 / 0	8
	7219	P585A Gennady the Dentist brute force implementation *1800	0 / 0	6
	7218	P585B Phillip and Trains dfs and similar graphs shortest paths *1700	0 / 0	5
	7217	P585C Alice, Bob, Oranges and Apples number theory *2400	0 / 0	9
	7216	P585D Lizard Era: Beginning meet-in-the-middle *2300	0 / 0	8
	7215	P585E Present for Vitalik the Philatelist combinatorics math number theory *2900	0 / 0	10
	7214	P585F Digits of Number Pi dp implementation strings *3200	0 / 0	10
	7213	P586A Alena's Schedule implementation *900	0 / 0	3
	7212	P586B Laurenty and Shop implementation *1300	0 / 0	4
	7211	P587A Duff and Weight Lifting greedy *1500	0 / 0	5
	7210	P587B Duff in Beach dp *2100	0 / 0	7
	7209	P587C Duff in the Army data structures trees *2200	0 / 0	8
	7208	P587D Duff in Mafia 2-sat binary search *3100	0 / 0	10
	7207	P587E Duff as a Queen data structures *2900	0 / 0	10
	7206	P587F Duff is Mad data structures strings *3000	0 / 0	10
	7205	P588A Duff and Meat greedy *900	0 / 0	3
	7204	P588B Duff in Love math *1300	0 / 0	4
	7203	P590A Median Smoothing implementation *1700	0 / 0	5
	7202	P590B Chip 'n Dale Rescue Rangers binary search geometry math *2100	0 / 0	7
	7201	P590C Three States dfs and similar graphs shortest paths *2200	0 / 0	8
	7200	P590D Top Secret Task dp *2300	0 / 0	8
	7199	P590E Birthday graph matchings strings *3200	0 / 0	10
	7198	P591A Wizards' Duel implementation math *900	0 / 0	3

Pick a problem randomly based on the current filter.