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Problemset

1,224 problems · filtered by 1 tag

#	Name	Rating↕	Solved↕
1639H	Treasure Hunt graphs interactive	unrated	0
1639I	Treasure Hunt graphs interactive	unrated	0
1639J	Treasure Hunt graphs interactive	unrated	0
1639K	Treasure Hunt graphs interactive	unrated	0
1638C	Inversion Graph data structures dsu graphs math	1300	16.1k
1635E	Cars 2-sat constructive algorithms dfs and similar dsu graphs greedy sortings	2200	2.9k
1634E	Fair Share constructive algorithms data structures dfs and similar graph matchings graphs	2400	2.3k
1633E	Spanning Tree Queries binary search data structures dfs and similar dsu graphs greedy math sortings trees	2400	1.8k
1632E1	Distance Tree (easy version) binary search data structures dfs and similar graphs shortest paths trees	2400	1.4k
1630F	Making It Bipartite flows graph matchings graphs number theory	3400	984
1627F	Not Splitting geometry graphs greedy implementation shortest paths	2700	691
1625E1	Cats on the Upgrade (easy version) brute force data structures dfs and similar divide and conquer dp graphs trees	2500	1.2k
1625E2	Cats on the Upgrade (hard version) binary search data structures dfs and similar graphs trees	2800	705
1624G	MinOr Tree bitmasks dfs and similar dsu graphs greedy	1900	7.9k
1621H	Trains and Airplanes dfs and similar graphs shortest paths trees	3500	267
1617E	Christmas Chocolates dfs and similar dp games graphs implementation math number theory shortest paths trees	2700	1.1k
1616F	Tricolor Triangles brute force graphs math matrices	2900	765
1616G	Just Add an Edge dfs and similar dp graphs	3500	462
1615C	Menorah brute force graphs greedy math	1600	9.3k
1615D	X(or)-mas Tree bitmasks dfs and similar dsu graphs trees	2200	2.2k
1615E	Purple Crayon data structures dfs and similar games graphs greedy math sortings trees	2400	1.8k
1615H	Reindeer Games binary search constructive algorithms data structures divide and conquer flows graphs shortest paths	3000	457
1613E	Crazy Robot dfs and similar graphs	2000	6k
1610F	Mashtali: a Space Oddysey constructive algorithms dfs and similar graphs	3000	716
1609D	Social Network dsu graphs greedy implementation trees	1600	8.6k
1608C	Game Master data structures dfs and similar dp graphs greedy two pointers	1700	7.4k
1608D	Dominoes combinatorics fft graphs math number theory	2400	1.6k
1607F	Robot on the Board 2 brute force dfs and similar graphs implementation	2300	2.2k
1601B	Frog Traveler data structures dfs and similar dp graphs shortest paths two pointers	1900	5.6k
1599I	Desert data structures graphs	2700	148
1594D	The Number of Imposters constructive algorithms dfs and similar dp dsu graphs	1700	9.8k
1592C	Bakry and Partitioning bitmasks constructive algorithms dfs and similar dp graphs trees	1700	9.3k
1588F	Jumping Through the Array binary search data structures graphs two pointers	3500	359
1585G	Poachers dp games graphs trees	2500	339
1584F	Strange LCS bitmasks dp graphs greedy strings	2600	1.2k
1583E	Moment of Bloom constructive algorithms dfs and similar graph matchings graphs greedy trees	2200	2.5k
1581B	Diameter of Graph constructive algorithms graphs greedy math	1200	12.6k
1580E	Railway Construction brute force constructive algorithms data structures graphs shortest paths	3400	126
1579D	Productive Meeting constructive algorithms graphs greedy	1400	18.6k
1579F	Array Stabilization (AND version) brute force graphs math number theory shortest paths	1700	5.4k
1578A	Anti-Tetris constructive algorithms graphs shortest paths	2800	449
1578K	Kingdom of Islands brute force graphs implementation	2800	435
1574D	The Strongest Build binary search brute force data structures dfs and similar graphs greedy hashing implementation	2000	4.9k
1574F	Occurrences combinatorics dfs and similar dp dsu fft graphs	2700	786
1572A	Book binary search brute force data structures dp graphs implementation sortings	1800	10.6k
1572D	Bridge Club flows graph matchings graphs greedy	2800	649
1569F	Palindromic Hamiltonian Path brute force dfs and similar dp graphs hashing	3000	493
1567F	One-Four Overload 2-sat constructive algorithms dfs and similar dsu graphs implementation	2700	888
1566G	Four Vertices constructive algorithms data structures graphs greedy implementation shortest paths	3100	433
1559C	Mocha and Hiking constructive algorithms graphs	1200	23.2k
1559D1	Mocha and Diana (Easy Version) brute force constructive algorithms dsu graphs greedy trees	1400	16.5k
1559D2	Mocha and Diana (Hard Version) brute force constructive algorithms dfs and similar dsu graphs greedy trees two pointers	2500	3.2k
1558E	Down Below binary search dfs and similar graphs greedy meet-in-the-middle shortest paths	3000	726
1556F	Sports Betting bitmasks combinatorics dp graphs math probabilities	2500	1.5k
1556H	DIY Tree graphs greedy math probabilities	3300	513
1555F	Good Graph data structures dsu graphs trees	2700	1.1k
1553E	Permutation Shift brute force combinatorics constructive algorithms dfs and similar dsu graphs math	2100	3.8k
1553G	Common Divisor Graph brute force constructive algorithms dsu graphs hashing math number theory	2700	1.3k
1552B	Running for Gold combinatorics graphs greedy sortings	1500	17.1k
1552D	Array Differentiation bitmasks brute force constructive algorithms dfs and similar dp graphs math	1800	8k
1550F	Jumping Around binary search data structures divide and conquer dp dsu graphs shortest paths	2700	958
1549B	Gregor and the Pawn Game dfs and similar dp flows graph matchings graphs greedy implementation	800	27.2k
1548A	Web of Lies brute force graphs greedy	1400	17.9k
1548E	Gregor and the Two Painters data structures divide and conquer graphs greedy math	3400	618
1547G	How Many Paths? dfs and similar dp graphs trees	2100	3.7k
1545C	AquaMoon and Permutations 2-sat brute force combinatorics constructive algorithms graph matchings graphs	2800	797
1543E	The Final Pursuit bitmasks constructive algorithms divide and conquer graphs greedy math	2700	499
1540A	Great Graphs constructive algorithms graphs greedy shortest paths sortings	1400	15.1k
1540B	Tree Array brute force combinatorics dp graphs math probabilities trees	2300	3.1k
1537F	Figure Fixing constructive algorithms dfs and similar dsu graphs greedy math	2200	2.9k
1536E	Omkar and Forest combinatorics graphs math shortest paths	2300	2.8k
1534C	Little Alawn's Puzzle combinatorics dp dsu graphs math	1300	14k
1534E	Lost Array graphs greedy interactive shortest paths	2300	2.1k
1534F1	Falling Sand (Easy Version) dfs and similar graphs greedy	2500	1.5k
1534F2	Falling Sand (Hard Version) dfs and similar dp graphs greedy	3000	790
1534H	Lost Nodes constructive algorithms dp graphs interactive sortings trees	3500	314
1533G	Biome Map *special constructive algorithms dfs and similar graphs	unrated	98
1533I	Excursions *special constructive algorithms dfs and similar flows graph matchings graphs	unrated	61
1530D	Secret Santa constructive algorithms flows graphs greedy math	1600	10.2k
1528D	It's a bird! No, it's a plane! No, it's AaParsa! constructive algorithms graphs shortest paths	2500	1.8k
1520G	To Go Or Not To Go? brute force dfs and similar graphs greedy implementation shortest paths	2200	4.4k
1519E	Off by One constructive algorithms dfs and similar geometry graphs sortings trees	2700	943
1517D	Explorer Space dp graphs shortest paths	1800	9.5k
1517G	Starry Night Camping constructive algorithms flows graphs	3300	753
1516D	Cut binary search data structures dp graphs number theory two pointers	2100	5.3k
1515F	Phoenix and Earthquake constructive algorithms dfs and similar dsu graphs greedy trees	2600	2.2k
1515G	Phoenix and Odometers dfs and similar graphs math number theory	2700	1.4k
1514E	Baby Ehab's Hyper Apartment binary search graphs interactive sortings two pointers	2700	712
1513D	GCD and MST constructive algorithms dsu graphs greedy number theory sortings	2000	6.7k
1511D	Min Cost String brute force constructive algorithms graphs greedy strings	1600	12.6k
1510B	Button Lock flows graph matchings graphs	2600	982
1510C	Cactus Not Enough dfs and similar graph matchings graphs	2900	247
1510K	King's Task brute force graphs implementation	1200	6.1k
1508C	Complete the MST bitmasks brute force data structures dfs and similar dsu graphs greedy trees	2500	1.8k
1506F	Triangular Paths constructive algorithms graphs math shortest paths sortings	2000	3.8k
1503F	Balance the Cards constructive algorithms data structures divide and conquer geometry graphs implementation	3500	239
1499G	Graph Coloring data structures graphs interactive	3100	294
1498D	Bananas in a Microwave dfs and similar dp graphs implementation	2200	2.5k
1498E	Two Houses brute force graphs greedy interactive sortings	2200	2.2k
1497D	Genius bitmasks dp graphs number theory	2500	1.8k

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