constructive algorithms - Problem Set - HFOJ

	ID	Problem Show tags Hide tags	AC / Tried	Difficulty
	5281	P1004B Sonya and Exhibition constructive algorithms greedy implementation math *1300	0 / 0	4
	5280	P1004C Sonya and Robots constructive algorithms implementation *1400	0 / 0	4
	5279	P1004D Sonya and Matrix brute force constructive algorithms implementation *2300	0 / 0	8
	5253	P1009D Relatively Prime Graph brute force constructive algorithms graphs greedy math *1700	0 / 0	5
	5240	P1012B Chemical table constructive algorithms dfs and similar dsu graphs matrices *1900	0 / 0	6
	5238	P1012D AB-Strings constructive algorithms strings *2800	0 / 0	10
	5230	P1015D Walking Between Houses constructive algorithms greedy *1600	0 / 0	5
	5223	P1016D Vasya And The Matrix constructive algorithms flows math *1800	0 / 0	6
	5217	P1017C The Phone Number constructive algorithms greedy *1600	0 / 0	5
	5209	P1019C Sergey's problem constructive algorithms graphs *3000	0 / 0	10
	5201	P1023D Array Restoration constructive algorithms data structures *1700	0 / 0	5
	5200	P1023E Down or Right constructive algorithms interactive matrices *2100	0 / 0	7
	5195	P1025C Plasticine zebra constructive algorithms implementation *1600	0 / 0	5
	5193	P1025E Colored Cubes constructive algorithms implementation matrices *2700	0 / 0	10
	5191	P1025G Company Acquisitions constructive algorithms math *3200	0 / 0	10
	5182	P1028B Unnatural Conditions constructive algorithms math *1200	0 / 0	4
	5179	P1028E Restore Array constructive algorithms *2400	0 / 0	9
	5158	P1031E Triple Flips constructive algorithms *2600	0 / 0	10
	5154	P1032C Playing Piano constructive algorithms dp *1700	0 / 0	5
	5145	P1033E Hidden Bipartite Graph binary search constructive algorithms dfs and similar graphs interactive *2800	0 / 0	10
	5141	P1034B Little C Loves 3 II brute force constructive algorithms flows graph matchings *2200	0 / 0	8
	5130	P1037A Packets constructive algorithms greedy math *1300	0 / 0	4
	5121	P1038B Non-Coprime Partition constructive algorithms math *1100	0 / 0	3
	5116	P1039A Timetable constructive algorithms data structures greedy math *2300	0 / 0	8
	5105	P1041E Tree Reconstruction constructive algorithms data structures graphs greedy *1900	0 / 0	6
	5101	P1042C Array Product constructive algorithms greedy math *1700	0 / 0	5
	5095	P1043C Smallest Word constructive algorithms greedy implementation *1500	0 / 0	5
	5093	P1043E Train Hard, Win Easy constructive algorithms greedy math sortings *1900	0 / 0	6
	5080	P1045E Ancient civilizations constructive algorithms geometry *3200	0 / 0	10
	5062	P1053E Euler tour constructive algorithms trees *3500	0 / 7	10
	5059	P1054C Candies Distribution constructive algorithms implementation *1500	0 / 0	5
	5057	P1054E Chips Puzzle constructive algorithms implementation math *2400	0 / 0	9
	5055	P1054G New Road Network constructive algorithms greedy math *3300	0 / 0	10
	5043	P1056D Decorate Apple Tree constructive algorithms dfs and similar dp graphs greedy sortings trees *1600	0 / 0	5
	5033	P1059C Sequence Transformation constructive algorithms math *1600	0 / 0	5
	5023	P1060H Sophisticated Device constructive algorithms *3300	0 / 0	10
	5010	P1063A Oh Those Palindromes constructive algorithms strings *1300	0 / 0	4
	5008	P1063C Dwarves, Hats and Extrasensory Abilities binary search constructive algorithms geometry interactive *1900	0 / 0	6
	5006	P1063E Lasers and Mirrors constructive algorithms math *3000	0 / 0	10
	5001	P1065B Vasya and Isolated Vertices constructive algorithms graphs *1300	1 / 1	4
	4987	P1067C Knights constructive algorithms *2600	0 / 0	10
	4982	P1068C Colored Rooks constructive algorithms graphs *1700	0 / 0	5
	4970	P1070L Odd Federalization constructive algorithms *2600	0 / 0	10
	4969	P1070M Algoland and Berland constructive algorithms divide and conquer geometry *3000	0 / 0	10
	4944	P1078E Negative Time Summation constructive algorithms *3400	0 / 0	10
	4940	P1080D Olya and magical square constructive algorithms implementation math *2000	0 / 0	7
	4937	P1081A Definite Game constructive algorithms math *800	0 / 0	3
	4936	P1081B Farewell Party constructive algorithms implementation *1500	0 / 0	5
	4933	P1081E Missing Numbers binary search constructive algorithms greedy math number theory *1900	0 / 0	6
	4932	P1081F Tricky Interactor constructive algorithms implementation interactive *2600	0 / 0	10
	4926	P1082D Maximum Diameter Graph constructive algorithms graphs implementation *1800	0 / 0	6
	4910	P1085D Minimum Diameter Tree constructive algorithms implementation trees *1700	0 / 0	5
	4905	P1088A Ehab and another construction problem brute force constructive algorithms *800	0 / 0	3
	4903	P1088C Ehab and a 2-operation task constructive algorithms greedy math *1400	0 / 0	4
	4902	P1088D Ehab and another another xor problem bitmasks constructive algorithms implementation interactive *2000	0 / 0	7
	4884	P1090C New Year Presents constructive algorithms data structures *2400	0 / 0	9
	4883	P1090D Similar Arrays constructive algorithms *1800	0 / 0	6
	4872	P1091B New Year and the Treasure Geolocation brute force constructive algorithms greedy implementation *1200	0 / 0	4
	4868	P1091F New Year and the Mallard Expedition constructive algorithms greedy *2600	0 / 0	10
	4860	P1092E Minimal Diameter Forest constructive algorithms dfs and similar greedy trees *2000	0 / 0	7
	4857	P1093B Letters Rearranging constructive algorithms greedy sortings strings *900	0 / 0	3
	4834	P1097E Egor and an RPG game constructive algorithms greedy *3400	0 / 0	10
	4830	P1098A Sum in the tree constructive algorithms dfs and similar greedy trees *1600	0 / 0	5
	4829	P1098B Nice table brute force constructive algorithms greedy math *2100	0 / 0	7
	4828	P1098C Construct a tree binary search constructive algorithms dfs and similar graphs greedy trees *2400	0 / 3	9
	4823	P1099B Squares and Segments binary search constructive algorithms math *1100	0 / 0	3
	4822	P1099C Postcard constructive algorithms implementation *1200	0 / 0	4
	4817	P1100D Dasha and Chess constructive algorithms games interactive *2500	0 / 0	9
	4801	P1103A Grid game constructive algorithms implementation *1400	0 / 0	4
	4800	P1103B Game with modulo binary search constructive algorithms interactive *2000	0 / 0	7
	4799	P1103C Johnny Solving constructive algorithms dfs and similar graphs math *2700	0 / 0	10
	4796	P1104A Splitting into digits constructive algorithms implementation math *800	0 / 0	3
	4777	P1107G Vasya and Maximum Profit binary search constructive algorithms data structures dp dsu *2400	2 / 7	9
	4773	P1108D Diverse Garland constructive algorithms dp greedy *1400	0 / 0	4
	4768	P1109B Sasha and One More Name constructive algorithms hashing strings *1800	0 / 0	6
	4761	P1110C Meaningless Operations constructive algorithms math number theory *1500	0 / 0	5
	4759	P1110E Magic Stones constructive algorithms math sortings *2200	0 / 0	8
	4757	P1110G Tree-Tac-Toe constructive algorithms games trees *3100	0 / 0	10
	4747	P1114B Yet Another Array Partitioning Task constructive algorithms greedy sortings *1500	0 / 0	5
	4719	P1117E Decypher the String bitmasks chinese remainder theorem constructive algorithms interactive math *2200	0 / 0	8
	4714	P1118C Palindromic Matrix constructive algorithms implementation *1700	0 / 0	5
	4711	P1118E Yet Another Ball Problem constructive algorithms implementation *1700	0 / 0	5
	4706	P1119C Ramesses and Corner Inversion constructive algorithms greedy implementation math *1500	0 / 0	5
	4702	P1119G Get Ready for the Battle constructive algorithms implementation *3100	0 / 0	10
	4699	P1120B Once in a casino constructive algorithms greedy implementation math *2700	0 / 0	10
	4689	P1129B Wrong Answer constructive algorithms *2000	0 / 0	7
	4677	P1131F Asya And Kittens constructive algorithms dsu *1700	0 / 0	5
	4662	P1133F2 Spanning Tree with One Fixed Degree constructive algorithms dfs and similar dsu graphs greedy *1900	0 / 0	6
	4660	P1136B Nastya Is Playing Computer Games constructive algorithms math *1000	0 / 0	3
	4659	P1136C Nastya Is Transposing Matrices constructive algorithms sortings *1500	0 / 0	5
	4653	P1137D Cooperative Game constructive algorithms interactive number theory *2400	0 / 0	9
	4628	P1141G Privatization of Roads in Treeland binary search constructive algorithms dfs and similar graphs greedy trees *1900	0 / 0	6
	4617	P1144C Two Shuffled Sequences constructive algorithms sortings *1000	0 / 0	3
	4616	P1144D Equalize Them All constructive algorithms greedy *1400	0 / 0	4
	4589	P1148C Crazy Diamond constructive algorithms sortings *1700	0 / 0	5
	4587	P1148E Earth Wind and Fire constructive algorithms greedy math sortings two pointers *2300	0 / 0	8
	4586	P1148F Foo Fighters bitmasks constructive algorithms *2700	0 / 0	10
	4585	P1148G Gold Experience constructive algorithms graphs math number theory probabilities *3300	0 / 0	10
	4583	P1149A Prefix Sum Primes constructive algorithms greedy math number theory *1200	0 / 0	4
	4575	P1151B Dima and a Bad XOR bitmasks brute force constructive algorithms dp *1600	0 / 0	5

Pick a problem randomly based on the current filter.