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Problemset

128 problems · filtered by 2 tags

#	Name	Rating↕	Solved↕
2244E	Masha and the Garland data structures dp greedy implementation math number theory strings	unrated	7.6k
2205E	Simons and Dividing the Rhythm combinatorics data structures dp dsu math string suffix structures strings	2100	1.8k
2196D	Double Bracket Sequence data structures dp expression parsing flows greedy strings	2500	1.1k
2164H	PalindromePalindrome data structures strings	3400	50
2111E	Changing the String binary search data structures greedy implementation sortings strings	1900	5.5k
2093G	Shorten the Array binary search bitmasks data structures dfs and similar greedy strings trees two pointers	1900	4k
2059E2	Stop Gaming (Hard Version) brute force constructive algorithms data structures hashing strings	2900	355
2041I	Auto Complete binary search data structures hashing implementation sortings strings trees	2300	688
2038I	Polyathlon binary search data structures hashing string suffix structures strings	2500	758
2008E	Alternating String brute force data structures dp greedy implementation strings	1500	13.8k
2000C	Numeric String Template data structures strings	1000	32k
1980G	Yasya and the Mysterious Tree bitmasks data structures dfs and similar graphs greedy strings trees	2300	1.8k
1968G1	Division + LCP (easy version) binary search data structures dp hashing string suffix structures strings	1900	5.4k
1968G2	Division + LCP (hard version) binary search brute force data structures dp hashing math string suffix structures strings	2200	2.6k
1917B	Erase First or Second Letter brute force combinatorics data structures dp strings	1100	38.7k
1913F	Palindromic Problem binary search data structures hashing string suffix structures strings	2800	583
1907B	YetnotherrokenKeoard data structures implementation strings	1000	31k
1902E	Collapsing Strings data structures strings trees	1900	5.9k
1898E	Sofia and Strings data structures greedy sortings strings two pointers	2200	2.8k
1864E	Guess Game bitmasks data structures games math probabilities sortings strings trees	2100	3.1k
1861C	Queries for the Array data structures dfs and similar implementation strings trees	1600	12.5k
1849C	Binary String Copying binary search brute force data structures hashing strings	1600	12.7k
1847D	Professor Higashikata data structures dsu greedy implementation strings	1900	4.3k
1838D	Bracket Walk data structures greedy strings	2100	3.8k
1827C	Palindrome Partition binary search brute force data structures dp hashing strings	2600	1.8k
1801G	A task for substrings data structures string suffix structures strings	3400	736
1800D	Remove Two Letters data structures greedy hashing strings	1200	30.2k
1777F	Comfortably Numb bitmasks data structures divide and conquer strings trees	2400	1.5k
1771D	Hossam and (sub-)palindromic tree brute force data structures dfs and similar dp strings trees	2100	3.3k
1771F	Hossam and Range Minimum Query binary search bitmasks data structures hashing probabilities strings trees	2500	1.7k
1750E	Bracket Cost binary search data structures divide and conquer dp greedy strings	2400	1.7k
1739F	Keyboard Design bitmasks data structures dp string suffix structures strings	2600	671
1738H	Palindrome Addicts data structures strings	3300	309
1720D2	Xor-Subsequence (hard version) bitmasks data structures dp strings trees	2400	2.3k
1714D	Color with Occurrences brute force data structures dp greedy strings	1600	10.5k
1703D	Double Strings brute force data structures strings	1100	29.7k
1697C	awoo's Favorite Problem binary search constructive algorithms data structures greedy implementation strings two pointers	1400	15.9k
1669E	2-Letter Strings data structures math strings	1200	21.8k
1660F2	Promising String (hard version) data structures implementation math strings	2100	3.2k
1654F	Minimal String Xoration bitmasks data structures divide and conquer greedy hashing sortings strings	2800	1.5k
1623E	Middle Duplication data structures dfs and similar greedy strings trees	2500	1.3k
1616E	Lexicographically Small Enough brute force data structures greedy strings	2200	2.8k
1608G	Alphabetic Tree binary search data structures dfs and similar hashing string suffix structures strings trees	3500	300
1582C	Grandma Capa Knits a Scarf brute force data structures greedy strings two pointers	1200	25.2k
1575A	Another Sorting Problem data structures sortings strings	1100	5.3k
1538E	Funny Substrings data structures hashing implementation matrices strings	2100	3.3k
1537E2	Erase and Extend (Hard Version) binary search data structures greedy hashing string suffix structures strings two pointers	2200	6.4k
1535F	String Distance binary search brute force data structures hashing implementation strings	3000	701
1526D	Kill Anton brute force constructive algorithms data structures math strings	2200	2.8k
1511F	Chainword brute force data structures dp matrices string suffix structures strings	2700	598
1506G	Maximize the Remaining String brute force data structures dp greedy strings	2000	4.9k
1476E	Pattern Matching bitmasks data structures dfs and similar graphs hashing sortings strings	2300	2.8k
1473D	Program data structures dp implementation strings	1700	11.1k
1437G	Death DBMS data structures string suffix structures strings trees	2600	1.3k
1430E	String Reversal data structures greedy strings	1900	7.4k
1428C	ABBB brute force data structures greedy strings	1100	22.9k
1416C	XOR Inverse bitmasks data structures divide and conquer dp greedy math sortings strings trees	2000	5.2k
1381A1	Prefix Flip (Easy Version) constructive algorithms data structures strings	1300	21.9k
1381A2	Prefix Flip (Hard Version) constructive algorithms data structures implementation strings two pointers	1700	14.5k
1366G	Construct the String data structures dp strings	2700	649
1320D	Reachable Strings data structures hashing strings	2500	1.7k
1313E	Concatenation with intersection data structures hashing strings two pointers	2700	778
1290B	Irreducible Anagrams binary search constructive algorithms data structures strings two pointers	1800	7.4k
1286E	Fedya the Potter Strikes Back data structures strings	3200	686
1252D	Find String in a Grid data structures dp strings trees	3000	496
1213F	Unstable String Sort data structures dfs and similar dsu graphs greedy implementation strings	2100	3.1k
1209F	Koala and Notebook data structures dfs and similar graphs shortest paths strings trees	2600	1.4k
1207G	Indie Album data structures dfs and similar hashing string suffix structures strings trees	2700	1.3k
1204D2	Kirk and a Binary String (hard version) data structures greedy math strings	2100	3.4k
1202C	You Are Given a WASD-string... brute force data structures dp greedy implementation math strings	2100	2.8k
1182C	Beautiful Lyrics data structures greedy strings	1700	4.6k
1129C	Morse Code binary search data structures dp hashing sortings string suffix structures strings	2400	1k
1081H	Palindromic Magic data structures hashing strings	3500	134
1056E	Check Transcription brute force data structures hashing strings	2100	2.9k
1056H	Detect Robots data structures strings	3200	285
1051E	Vasya and Big Integers binary search data structures dp hashing strings	2600	1.3k
1045J	Moonwalk challenge data structures strings trees	2600	236
1043G	Speckled Band data structures divide and conquer hashing string suffix structures strings	3500	329
979D	Kuro and GCD and XOR and SUM binary search bitmasks brute force data structures dp dsu greedy math number theory strings trees	2200	2.3k
965E	Short Code data structures dp greedy strings trees	2200	2k
923C	Perfect Security data structures greedy strings trees	1800	4.8k
917E	Upside Down data structures string suffix structures strings trees	3400	195
914F	Substrings in a String bitmasks brute force data structures string suffix structures strings	3000	2.5k
900E	Maximum Questions data structures dp strings	2100	1.4k
899F	Letters Removing data structures strings	2100	2.1k
862F	Mahmoud and Ehab and the final stage data structures strings	2900	290
827A	String Reconstruction data structures greedy sortings strings	1700	4.4k
827C	DNA Evolution data structures strings	2100	1.8k
797C	Minimal string data structures greedy strings	1700	10.2k
786D	Rap God data structures dfs and similar hashing strings trees	3400	174
757C	Felicity is Coming! data structures hashing sortings strings	1900	2.5k
755B	PolandBall and Game binary search data structures games greedy sortings strings	1100	13k
727E	Games on a CD data structures hashing string suffix structures strings	2300	1.6k
724D	Dense Subsequence data structures greedy strings	1900	2.5k
722D	Generating Sets binary search data structures dfs and similar greedy strings trees	1900	3.4k
710F	String Set Queries brute force data structures hashing interactive string suffix structures strings	2400	2.6k
696D	Legen... data structures dp matrices strings	2500	1.7k
670E	Correct Bracket Sequence Editor data structures dsu strings	1700	3.5k
665E	Beautiful Subarrays data structures divide and conquer strings trees	2100	4.7k
653F	Paper task data structures string suffix structures strings	2600	1.2k

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