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Problemset

1,224 problems · filtered by 1 tag

#	Name	Rating↕	Solved↕
2249F	Even Simple Path constructive algorithms graphs shortest paths	unrated	50
2245D2	Construct an Array (Hard Version) 2-sat constructive algorithms dfs and similar graphs implementation	unrated	1.7k
2241E	Fair and Square combinatorics dp graphs math number theory trees	1600	5.8k
2239D	Hunting the Beast combinatorics dp graphs math	2500	601
2239E	The end of this world, data structures divide and conquer dsu graphs	3300	154
2238F	Infinite Work combinatorics graphs greedy math trees	2600	406
2237E	Permutation Commutation data structures graphs greedy	2000	2k
2233F	Shortest GCD Paths dp graphs math number theory shortest paths	2800	385
2229E	Deconstruction Tree combinatorics data structures dp graphs trees	2100	2k
2225G	Simple Problem brute force graphs greedy number theory	2900	269
2223D	Zhily and Cycle graphs greedy	2800	359
2222F	Building Tree data structures divide and conquer dsu graphs implementation	2600	716
2222G	Statistics on Tree binary search brute force dfs and similar divide and conquer graphs trees	3100	215
2217E	Definitely Larger binary search constructive algorithms data structures graphs greedy sortings	2000	2.5k
2215C	Oriented Journey bitmasks brute force communication constructive algorithms graphs interactive trees	2200	819
2208D1	Tree Orientation (Easy Version) constructive algorithms dfs and similar dsu graphs greedy matrices trees	1800	4.8k
2208D2	Tree Orientation (Hard Version) dfs and similar dsu graphs greedy sortings trees	2200	2.1k
2207F	Hanabi binary search data structures dp dsu flows graph matchings graphs greedy	2900	315
2206G	Extra Transition graphs	3100	111
2205F	Simons and Reconstructing His Roads constructive algorithms data structures dsu graphs	2400	714
2204D	Alternating Path constructive algorithms dfs and similar graph matchings graphs	1400	10k
2204G	Grid Path dp graphs matrices	2700	496
2196C1	Interactive Graph (Simple Version) binary search combinatorics dfs and similar dp graphs interactive	1800	3.9k
2196C2	Interactive Graph (Hard Version) combinatorics dfs and similar dp graphs interactive	2000	2.7k
2196F	Indivisible brute force constructive algorithms graphs	3300	118
2195F	Parabola Independence dp graphs greedy math sortings	2000	2.9k
2195G	Idiot First Search and Queries binary search data structures dp graphs trees	2300	1.2k
2194E	The Turtle Strikes Back dp graphs greedy implementation	2000	2.8k
2193H	Remove the Grail Tree dfs and similar dp graphs greedy implementation trees	2400	1.1k
2192E	Swap to Rearrange constructive algorithms dfs and similar graph matchings graphs greedy strings	2100	2.3k
2190G	Maximize Determinant graphs	3300	105
2187C	Jerry and Tom data structures dfs and similar dsu games graphs greedy trees	2300	1.5k
2184C	Huge Pile binary search dfs and similar dp graphs math	1100	23k
2184F	Cherry Tree dfs and similar dp graphs trees	1900	4.2k
2181G	Greta's Game binary search dp graphs greedy math	2400	679
2181K	Knit the Grid 2-sat constructive algorithms graphs matrices	3500	89
2179F	Blackslex and Another RGB Walking communication constructive algorithms graphs interactive number theory trees	2000	2.9k
2178H	Create or Duplicate bitmasks graphs number theory shortest paths	3300	333
2178I	Numbers or Fireworks bitmasks combinatorics dp graphs	3300	265
2176D	Fibonacci Paths data structures dp graphs sortings	1800	6.1k
2172F	Cluster Computing System graphs greedy math	1600	4.2k
2172M	Maximum Distance To Port graphs shortest paths	1300	6.4k
2172N	New Kingdom constructive algorithms graphs implementation	2800	176
2168C	Intercepting Butterflies bitmasks communication constructive algorithms graphs interactive	unrated	912
2164E	Journey data structures dfs and similar dsu graphs greedy	2300	3.6k
2164F2	Chain Prefix Rank (Hard Version) binary search combinatorics data structures dfs and similar dp graphs math trees	2900	648
2164G	Pointless Machine constructive algorithms graphs interactive trees	3300	249
2161F	SubMST combinatorics graphs trees	3000	368
2158D	Palindrome Flipping brute force constructive algorithms graphs implementation shortest paths strings	2000	3.4k
2158E	Sink data structures divide and conquer dsu graphs implementation	2600	665
2158F1	Distinct GCDs (Easy Version) constructive algorithms graphs math number theory	2600	450
2158F2	Distinct GCDs (Hard Version) combinatorics constructive algorithms graphs math number theory	3000	287
2156E	Best Time to Buy and Sell Stock binary search brute force data structures dp games graphs greedy	2500	1k
2155B	Abraham's Great Escape constructive algorithms graphs	1100	17.8k
2155D	Batteries brute force constructive algorithms graph matchings graphs interactive math	1800	6.2k
2155F	Juan's Colorful Tree data structures dfs and similar dsu graphs meet-in-the-middle trees	2800	745
2154D	Catshock constructive algorithms dfs and similar graphs trees two pointers	1900	5k
2152E	Monotone Subsequence constructive algorithms graphs greedy interactive math	2100	3.9k
2150F	Cycle Closing constructive algorithms graphs implementation shortest paths trees	3000	224
2147H	Maxflow GCD Coloring constructive algorithms flows graphs	3500	284
2145F	Long Journey dfs and similar divide and conquer dp graphs greedy math matrices number theory	2500	1.1k
2143C	Max Tree constructive algorithms dfs and similar graphs greedy	1300	14.9k
2141H	Merging Vertices in a Graph *special dfs and similar dsu graphs	2700	85
2138C1	Maple and Tree Beauty (Easy Version) brute force dfs and similar dp graphs trees	1800	5.7k
2137G	Cry Me a River dfs and similar dp games graphs	2200	2k
2135C	By the Assignment binary search bitmasks combinatorics dfs and similar dsu graphs math	2000	5.4k
2133C	The Nether graphs interactive	1400	13.4k
2133F	Flint and Steel data structures dp graphs	3000	489
2132F	Rada and the Chamomile Valley dfs and similar graphs shortest paths	2100	2.9k
2131D	Arboris Contractio data structures graphs greedy trees	1400	14.9k
2131H	Sea, You & copriMe brute force constructive algorithms graphs greedy math number theory	2600	909
2129A	Double Perspective constructive algorithms dp dsu graphs greedy sortings	1300	18.3k
2129E	Induced Subgraph Queries data structures graphs sortings	3000	559
2128F	Strict Triangle graphs greedy shortest paths	3200	403
2127D	Root was Built by Love, Broken by Destiny combinatorics dfs and similar graphs trees	1800	7.5k
2127G2	Inter Active (Hard Version) binary search bitmasks constructive algorithms graphs implementation interactive math probabilities	3500	126
2127H	23 Rises Again brute force dfs and similar dp flows graph matchings graphs greedy implementation probabilities trees	3100	1.9k
2126F	1-1-1, Free Tree! brute force data structures dfs and similar graphs implementation trees	2000	4.4k
2122D	Traffic Lights brute force data structures divide and conquer dp graphs greedy shortest paths	2400	2.8k
2120F	Superb Graphs 2-sat graphs	2600	504
2120G	Eulerian Line Graph graphs greedy math	3000	113
2118D1	Red Light, Green Light (Easy version) brute force dfs and similar dp graphs implementation number theory	1700	8.6k
2118D2	Red Light, Green Light (Hard version) binary search brute force data structures dfs and similar dp graphs implementation math number theory	2200	2.6k
2118F	Shifts and Swaps data structures graphs hashing trees	3100	299
2117G	Omg Graph brute force dsu graphs greedy shortest paths sortings	1900	5.4k
2115B	Gellyfish and Camellia Japonica brute force constructive algorithms dfs and similar dp graphs greedy trees	2100	5k
2115E	Gellyfish and Mayflower dp graphs	3500	316
2113E	From Kazan with Love dfs and similar graphs implementation trees	2800	430
2113F	Two Arrays constructive algorithms dfs and similar graphs math	2500	992
2112D	Reachability and Tree constructive algorithms dfs and similar graphs trees	1700	9.8k
2112E	Tree Colorings combinatorics dfs and similar dp graphs math number theory trees	2200	3.5k
2112F	Variables and Operations graphs greedy shortest paths	2800	663
2110D	Fewer Batteries binary search dfs and similar dp graphs greedy hashing	1700	8.8k
2110E	Melody dfs and similar graphs implementation	2300	2.8k
2109D	D/D/D dfs and similar graphs greedy shortest paths	1900	5.8k
2109F	Penguin Steps binary search dfs and similar flows graphs shortest paths	3000	284
2108C	Neo's Escape binary search brute force data structures dp dsu graphs greedy implementation	1500	15.1k
2108E	Spruce Dispute constructive algorithms dfs and similar graphs greedy implementation shortest paths trees	2600	922
2104G	Modulo 3 data structures divide and conquer dsu graphs trees	2700	553
2097B	Baggage Claim combinatorics dfs and similar dp dsu graphs implementation math trees	2300	2k

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