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Problemset

1,224 problems · filtered by 1 tag

#	Name	Rating↕	Solved↕
1797A	Li Hua and Maze constructive algorithms flows graphs greedy implementation	800	19.7k
1795G	Removal Sequences bitmasks dfs and similar graphs	2700	852
1792F1	Graph Coloring (easy version) combinatorics dp graphs	2700	1k
1792F2	Graph Coloring (hard version) brute force combinatorics divide and conquer dp fft graphs	2900	558
1790F	Timofey and Black-White Tree brute force dfs and similar divide and conquer graphs greedy math shortest paths trees	2100	4.2k
1790G	Tokens on Graph constructive algorithms dfs and similar graphs shortest paths	2300	1.3k
1788F	XOR, Tree, and Queries bitmasks constructive algorithms dfs and similar dsu graphs greedy implementation trees	2500	1.2k
1787D	Game on Axis combinatorics dfs and similar dsu graphs implementation	1900	3.9k
1783F	Double Sort II dfs and similar flows graph matchings graphs	2500	1.4k
1779E	Anya's Simultaneous Exhibition constructive algorithms graphs greedy interactive sortings	2400	2.1k
1779G	The Game of the Century constructive algorithms graphs shortest paths	3000	418
1778F	Maximizing Root dfs and similar dp graphs math number theory trees	2600	964
1777E	Edge Reverse binary search dfs and similar graphs trees	2200	2.4k
1776F	Train Splitting constructive algorithms graphs greedy	1700	4.2k
1776J	Italian Data Centers graphs shortest paths	2500	920
1775D	Friendly Spiders dfs and similar graphs math number theory shortest paths	1800	8.9k
1772F	Copy of a Copy of a Copy constructive algorithms dfs and similar graphs implementation sortings	2000	2.9k
1770D	Koxia and Game constructive algorithms data structures dfs and similar dsu flows games graph matchings graphs implementation	2000	4.5k
1768D	Lucky Permutation constructive algorithms dfs and similar graphs greedy	1800	9.3k
1767E	Algebra Flash bitmasks brute force dp graphs math meet-in-the-middle trees	2500	1.3k
1765H	Hospital Queue binary search graphs greedy implementation	2200	1.6k
1764C	Doremy's City Construction graphs greedy	1400	10.5k
1763E	Node Pairs dp graphs math number theory	2200	2.3k
1763F	Edge Queries data structures dfs and similar dp dsu graphs trees	3000	750
1761C	Set Construction constructive algorithms dfs and similar graphs greedy	1400	10.8k
1761E	Make It Connected binary search brute force constructive algorithms dsu graphs greedy matrices trees two pointers	2400	2.2k
1760G	SlavicG's Favorite Problem bitmasks dfs and similar graphs	1700	10.7k
1758E	Tick, Tock combinatorics dfs and similar dsu graphs	2500	1.1k
1753D	The Beach constructive algorithms dfs and similar graphs shortest paths	2400	2.1k
1749E	Cactus Wall constructive algorithms dfs and similar graphs shortest paths	2400	2.1k
1741D	Masha and a Beautiful Tree dfs and similar divide and conquer graphs sortings trees	1300	18.7k
1741G	Kirill and Company bitmasks brute force dfs and similar dp flows graphs shortest paths	2200	2k
1740I	Arranging Crystal Balls data structures divide and conquer dp geometry graphs number theory	3500	182
1739D	Reset K Edges binary search data structures dfs and similar graphs greedy trees	1900	6.4k
1738D	Permutation Addicts constructive algorithms data structures dfs and similar dsu graphs trees	1900	3.8k
1738F	Connectivity Addicts constructive algorithms dsu graphs greedy interactive shortest paths trees	2400	1.4k
1737D	Ela and the Wiring Wizard brute force dp graphs greedy implementation shortest paths	2200	2.1k
1735C	Phase Shift dfs and similar dsu graphs greedy implementation strings	1400	11k
1726C	Jatayu's Balanced Bracket Sequence data structures dsu graphs greedy	1300	13.5k
1726D	Edge Split brute force constructive algorithms dfs and similar dsu graphs probabilities trees	2000	4.2k
1725M	Moving Both Hands dp graphs shortest paths	1800	4.6k
1721F	Matching Reduction brute force constructive algorithms dfs and similar flows graph matchings graphs interactive	2800	641
1718E	Impressionism constructive algorithms graphs implementation math	3500	228
1717F	Madoka and The First Session constructive algorithms flows graph matchings graphs implementation	2500	788
1715D	2+ doors 2-sat bitmasks graphs greedy	1900	6.2k
1715E	Long Way Home data structures divide and conquer dp geometry graphs greedy shortest paths	2400	2.4k
1711B	Party brute force graphs	1300	14.5k
1709F	Multiset of Strings bitmasks brute force dp fft flows graphs math meet-in-the-middle trees	2500	729
1707C	DFS Trees dfs and similar dsu graphs greedy sortings trees	2400	2k
1704E	Count Seconds brute force constructive algorithms dp graphs implementation math	2200	2.7k
1702E	Split Into Two Sets dfs and similar dsu graphs	1600	18.7k
1698F	Equal Reversal constructive algorithms graphs implementation math	2800	782
1697E	Coloring brute force combinatorics constructive algorithms dp geometry graphs greedy implementation math	2400	1.5k
1697F	Too Many Constraints 2-sat constructive algorithms graphs implementation	2800	788
1696F	Tree Recovery brute force constructive algorithms dfs and similar dsu graphs trees	2600	1.2k
1695C	Zero Path brute force data structures dp graphs greedy shortest paths	1700	14.5k
1695E	Ambiguous Dominoes constructive algorithms dfs and similar graphs	2700	543
1693C	Keshi in Search of AmShZ graphs greedy shortest paths	2300	3.3k
1691E	Number of Groups data structures dfs and similar dsu graphs greedy sortings	2300	2.2k
1690F	Shifting String graphs math number theory strings	1700	9.2k
1689E	ANDfinity bitmasks brute force constructive algorithms dfs and similar dsu graphs	2500	1.4k
1687B	Railway System constructive algorithms graphs greedy interactive sortings	1700	4.2k
1682E	Unordered Swaps constructive algorithms dfs and similar graphs greedy math sortings trees	2700	777
1682F	MCMF? data structures flows graphs greedy sortings two pointers	2700	471
1680F	Lenient Vertex Cover dfs and similar divide and conquer dsu graphs trees	2600	979
1679D	Toss a Coin to Your Graph... binary search dfs and similar dp graphs	1900	6k
1677C	Tokitsukaze and Two Colorful Tapes constructive algorithms dfs and similar graphs greedy	1900	4.1k
1676G	White-Black Balanced Subtrees dfs and similar dp graphs trees	1300	25.6k
1675D	Vertical Paths graphs implementation trees	1300	15.1k
1674G	Remove Directed Edges dfs and similar dp graphs	2000	3k
1672F1	Array Shuffling constructive algorithms graphs greedy	2000	3.6k
1672F2	Checker for Array Shuffling constructive algorithms dfs and similar graphs	2800	956
1672G	Cross Xor constructive algorithms graphs math matrices	3200	676
1670C	Where is the Pizza? data structures dfs and similar dsu graphs implementation math	1400	11.1k
1666L	Labyrinth dfs and similar graphs	1800	3.7k
1662C	European Trip dp graphs math matrices	unrated	387
1662F	Antennas data structures dfs and similar graphs implementation shortest paths	unrated	1.3k
1662J	Training Camp flows graphs	unrated	303
1662O	Circular Maze brute force dfs and similar graphs implementation	unrated	1.6k
1661B	Getting Zero bitmasks brute force dfs and similar dp graphs greedy shortest paths	1300	21.1k
1659E	AND-MEX Walk bitmasks brute force constructive algorithms dfs and similar dsu graphs	2200	2k
1659F	Tree and Permutation Game dfs and similar games graphs trees	3000	255
1657F	Words on Tree 2-sat dfs and similar dsu graphs trees	2600	854
1656F	Parametric MST binary search constructive algorithms graphs greedy math sortings	2600	1.3k
1656G	Cycle Palindrome constructive algorithms graphs math	3200	505
1656I	Neighbour Ordering constructive algorithms graphs	3500	169
1654E	Arithmetic Operations brute force data structures graphs math	2300	2.4k
1654G	Snowy Mountain data structures dfs and similar graphs greedy shortest paths trees	2900	474
1651D	Nearest Excluded Points binary search data structures dfs and similar graphs shortest paths	1900	6.7k
1650G	Counting Shortcuts data structures dfs and similar dp graphs shortest paths	2100	3k
1648E	Air Reform data structures dfs and similar divide and conquer dsu graphs implementation trees	3200	601
1648F	Two Avenues data structures dfs and similar graphs	3500	190
1647B	Madoka and the Elegant Gift brute force constructive algorithms graphs implementation	1200	17.2k
1639A	Treasure Hunt graphs interactive	unrated	0
1639B	Treasure Hunt graphs interactive	unrated	0
1639C	Treasure Hunt graphs interactive	unrated	0
1639D	Treasure Hunt graphs interactive	unrated	0
1639E	Treasure Hunt graphs interactive	unrated	0
1639F	Treasure Hunt graphs interactive	unrated	0
1639G	Treasure Hunt graphs interactive	unrated	0

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