constructive algorithms - Problem Set - HFOJ

	ID	Problem Show tags Hide tags	AC / Tried	Difficulty
	9754	P4B Before an Exam constructive algorithms greedy *1200	0 / 0	4
	9749	P5C Longest Regular Bracket Sequence constructive algorithms data structures dp greedy sortings strings *1900	0 / 0	6
	9741	P7A Kalevitch and Chess brute force constructive algorithms *1100	0 / 0	3
	9735	P8B Obsession with Robots constructive algorithms graphs implementation *1400	0 / 0	4
	9722	P10E Greedy Change constructive algorithms *2600	0 / 0	10
	9721	P11A Increasing Sequence constructive algorithms implementation math *900	0 / 4	3
	9712	P12E Start of the season constructive algorithms *2100	0 / 0	7
	9704	P14C Four Segments brute force constructive algorithms geometry implementation math *1700	0 / 0	5
	9663	P23B Party constructive algorithms graphs math *1600	0 / 0	5
	9662	P23C Oranges and Apples constructive algorithms sortings *2500	0 / 0	9
	9647	P26C Parquet combinatorics constructive algorithms greedy implementation *2000	0 / 0	7
	9645	P26E Multithreading constructive algorithms *2400	0 / 0	9
	9642	P27C Unordered Subsequence constructive algorithms greedy *1900	0 / 0	6
	9631	P29D Ant on the Tree constructive algorithms dfs and similar trees *2000	0 / 0	7
	9625	P30E Tricky and Clever Password binary search constructive algorithms data structures greedy hashing strings *2800	0 / 0	10
	9595	P36E Two Paths constructive algorithms dsu graphs implementation *2600	0 / 0	10
	9570	P40A Find Color constructive algorithms geometry implementation math *1300	0 / 0	4
	9561	P41E 3-cycles constructive algorithms graphs greedy *1900	0 / 0	6
	9558	P42C Safe cracking brute force constructive algorithms *2200	0 / 0	8
	9557	P42D Strange town constructive algorithms math *2300	0 / 0	8
	9552	P43D Journey brute force constructive algorithms implementation *2000	0 / 0	7
	9541	P44J Triminoes constructive algorithms greedy *2000	0 / 0	7
	9536	P45E Director constructive algorithms greedy *2000	0 / 0	7
	9531	P45J Planting Trees constructive algorithms *1800	0 / 0	6
	9511	P48H Black and White constructive algorithms *2800	0 / 0	10
	9508	P49C Disposition constructive algorithms math *1700	0 / 0	5
	9489	P53C Little Frog constructive algorithms *1200	0 / 0	4
	9458	P59D Team Arrangement constructive algorithms greedy implementation *2000	0 / 0	7
	9438	P63D Dividing Island constructive algorithms *1900	0 / 0	6
	9419	P66D Petya and His Friends constructive algorithms math number theory *1700	0 / 0	5
	9373	P74E Shift It! constructive algorithms *2800	0 / 0	10
	9355	P78B Easter Eggs constructive algorithms implementation *1200	0 / 0	4
	9341	P81D Polycarp's Picture Gallery constructive algorithms greedy *2100	0 / 0	7
	9338	P82B Sets constructive algorithms hashing implementation *1700	0 / 0	5
	9327	P85A Domino constructive algorithms implementation *1300	0 / 0	4
	9321	P86B Tetris revisited constructive algorithms graph matchings greedy math *2200	0 / 0	8
	9300	P91D Grocer's Problem constructive algorithms graphs greedy *2600	0 / 0	10
	9281	P97B Superset constructive algorithms divide and conquer *2300	0 / 0	8
	9274	P98D Help Monks constructive algorithms *2500	0 / 0	9
	9251	P103C Russian Roulette constructive algorithms greedy *1900	0 / 0	6
	9227	P109D Lucky Sorting constructive algorithms sortings *2000	0 / 0	7
	9224	P110B Lucky String constructive algorithms strings *1100	0 / 0	3
	9196	P118B Present from Lena constructive algorithms implementation *1000	0 / 0	3
	9191	P119B Before Exam constructive algorithms implementation sortings *1900	0 / 0	6
	9161	P125C Hobbits' Party constructive algorithms greedy *1600	0 / 0	5
	9160	P125D Two progressions constructive algorithms greedy *2200	0 / 0	8
	9156	P126C E-reader Display constructive algorithms greedy *2000	0 / 0	7
	9150	P128B String brute force constructive algorithms hashing implementation string suffix structures strings *2100	0 / 0	7
	9148	P128D Numbers constructive algorithms implementation *2000	0 / 0	7
	9125	P132D Constants in the language of Shakespeare constructive algorithms dp greedy *2100	0 / 0	7
	9119	P134C Swaps constructive algorithms graphs greedy *2200	0 / 0	8
	9116	P135C Zero-One constructive algorithms games greedy *1900	0 / 0	6
	9091	P141C Queue constructive algorithms greedy sortings *1800	0 / 0	6
	9089	P141E Clearing Up constructive algorithms dp dsu graphs *2300	0 / 0	8
	9087	P142B Help General constructive algorithms greedy implementation *1800	0 / 0	6
	9075	P145B Lucky Number 2 constructive algorithms *1800	0 / 0	6
	9067	P148A Insomnia cure constructive algorithms implementation math *800	0 / 0	3
	9065	P148C Terse princess constructive algorithms greedy *1700	0 / 0	5
	9032	P156B Suspects constructive algorithms data structures implementation *1600	0 / 0	5
	9010	P161B Discounts constructive algorithms greedy sortings *1700	0 / 0	5
	8967	P171A Mysterious numbers - 1 special problem constructive algorithms 1200	0 / 0	4
	8951	P173D Deputies constructive algorithms graphs greedy implementation *2500	0 / 0	9
	8938	P176C Playing with Superglue combinatorics constructive algorithms *2000	0 / 0	7
	8898	P180F Mathematical Analysis Rocks! constructive algorithms implementation math *1200	0 / 0	4
	8890	P183A Headquarters constructive algorithms math *1700	0 / 0	5
	8851	P193A Cutting Figure constructive algorithms graphs trees *1700	0 / 0	5
	8849	P193C Hamming Distance constructive algorithms greedy math matrices *2400	0 / 0	9
	8833	P196C Paint Tree constructive algorithms divide and conquer geometry sortings trees *2200	0 / 0	8
	8830	P197A Plate Game constructive algorithms games math *1600	0 / 0	5
	8823	P198D Cube Snake constructive algorithms *2700	0 / 0	10
	8819	P199A Hexadecimal's theorem brute force constructive algorithms implementation number theory *900	0 / 0	3
	8805	P201A Clear Symmetry constructive algorithms dp math *1700	0 / 0	5
	8741	P209B Pixels constructive algorithms math *2100	0 / 0	7
	8740	P209C Trails and Glades constructive algorithms dsu graphs greedy *2400	0 / 0	9
	8731	P213D Stars constructive algorithms geometry *2300	0 / 0	8
	8728	P214B Hometask brute force constructive algorithms greedy math *1600	0 / 0	5
	8712	P218A Mountain Scenery brute force constructive algorithms implementation *1100	0 / 0	3
	8704	P220B Little Elephant and Array constructive algorithms data structures *1800	2 / 2	6
	8686	P225A Dice Tower constructive algorithms greedy *1100	0 / 0	3
	8678	P226D The table constructive algorithms greedy *2100	0 / 0	7
	8661	P231B Magic, Wizardry and Wonders constructive algorithms greedy *1500	0 / 0	5
	8657	P232A Cycles binary search constructive algorithms graphs greedy *1600	0 / 0	5
	8655	P232C Doe Graphs constructive algorithms divide and conquer dp graphs shortest paths *2600	0 / 0	10
	8644	P234G Practice constructive algorithms divide and conquer implementation *1600	0 / 0	5
	8643	P234H Merging Two Decks constructive algorithms greedy *2000	0 / 0	7
	8630	P238A Not Wool Sequences constructive algorithms math *1300	0 / 0	4
	8629	P238B Boring Partition constructive algorithms *1800	0 / 0	6
	8615	P241G Challenging Balloons constructive algorithms *1900	0 / 0	6
	8599	P245D Restoring Table constructive algorithms greedy *1500	0 / 0	5
	8594	P246A Buggy Sorting constructive algorithms greedy sortings *900	0 / 0	3
	8592	P246C Beauty Pageant brute force constructive algorithms greedy *1600	0 / 0	5
	8565	P254A Cards with Numbers constructive algorithms sortings *1200	0 / 0	4
	8539	P260C Balls and Boxes constructive algorithms greedy implementation *1700	0 / 0	5
	8538	P260D Black and White Tree constructive algorithms dsu graphs greedy trees *2100	0 / 0	7
	8534	P261C Maxim and Matrix constructive algorithms dp math *2000	0 / 0	7
	8524	P264A Escape from Stones constructive algorithms data structures implementation two pointers *1200	0 / 0	4
	8516	P266B Queue at the School constructive algorithms graph matchings implementation shortest paths *800	0 / 0	3
	8515	P266C Below the Diagonal constructive algorithms greedy math *2100	0 / 0	7
	8507	P268C Beautiful Sets of Points constructive algorithms implementation *1500	0 / 0	5
	8502	P269C Flawed Flow constructive algorithms flows graphs greedy *2100	0 / 0	7

Pick a problem randomly based on the current filter.