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Problemset

102 problems · filtered by 1 tag

#	Name	Rating↕	Solved↕
2225F	String Cutting binary search brute force greedy hashing string suffix structures strings	2600	762
2209E	A Trivial String Problem brute force dp hashing string suffix structures strings	2200	2k
2205E	Simons and Dividing the Rhythm combinatorics data structures dp dsu math string suffix structures strings	2100	1.8k
2196E1	Fuzzy Concatenation (Easy Version) binary search bitmasks brute force data structures greedy string suffix structures	2900	311
2196E2	Fuzzy Concatenation (Hard version) binary search bitmasks data structures dp greedy string suffix structures	3000	238
2181L	LLM Training math string suffix structures	2800	152
2172H	Shuffling Cards with Problem Solver 68! hashing string suffix structures strings	2500	311
2144F	Bracket Groups brute force constructive algorithms dp string suffix structures strings	2700	1.1k
2095A	Piecing It Together *special string suffix structures	unrated	13.9k
2045H	Missing Separators dp sortings string suffix structures strings	2200	812
2038I	Polyathlon binary search data structures hashing string suffix structures strings	2500	758
2010C2	Message Transmission Error (hard version) hashing string suffix structures strings two pointers	1700	4.8k
1984D	''a'' String Problem brute force hashing implementation math string suffix structures strings	2000	4k
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
1923F	Shrink-Reverse binary search brute force greedy hashing implementation string suffix structures strings	2800	544
1916H2	Matrix Rank (Hard Version) combinatorics dp math matrices string suffix structures	2700	681
1913F	Palindromic Problem binary search data structures hashing string suffix structures strings	2800	583
1895D	XOR Construction bitmasks constructive algorithms data structures math string suffix structures trees	1900	7.2k
1817F	Entangled Substrings string suffix structures strings	3500	366
1801G	A task for substrings data structures string suffix structures strings	3400	736
1780G	Delicious Dessert binary search dsu hashing math number theory string suffix structures	2400	1k
1739F	Keyboard Design bitmasks data structures dp string suffix structures strings	2600	671
1721E	Prefix Function Queries dfs and similar dp hashing string suffix structures strings trees	2200	2.7k
1706A	Another String Minimization Problem 2-sat constructive algorithms greedy string suffix structures strings	800	24.3k
1621I	Two Sequences data structures hashing string suffix structures	3500	150
1608G	Alphabetic Tree binary search data structures dfs and similar hashing string suffix structures strings trees	3500	300
1598G	The Sum of Good Numbers hashing math string suffix structures strings	3200	441
1562E	Rescue Niwen! dp greedy string suffix structures strings	2500	1.6k
1537E1	Erase and Extend (Easy Version) binary search brute force dp greedy hashing implementation string suffix structures strings two pointers	1600	16.9k
1537E2	Erase and Extend (Hard Version) binary search data structures greedy hashing string suffix structures strings two pointers	2200	6.4k
1536F	Omkar and Akmar chinese remainder theorem combinatorics constructive algorithms fft games geometry math meet-in-the-middle string suffix structures	2600	1.2k
1511F	Chainword brute force data structures dp matrices string suffix structures strings	2700	598
1482H	Exam data structures string suffix structures trees	3400	778
1469E	A Bit Similar bitmasks brute force hashing string suffix structures strings two pointers	2400	2.2k
1466G	Song of the Sirens combinatorics divide and conquer hashing math string suffix structures strings	2600	1.1k
1437G	Death DBMS data structures string suffix structures strings trees	2600	1.3k
1400F	x-prime Substrings brute force dfs and similar dp string suffix structures strings	2800	1.2k
1393E1	Twilight and Ancient Scroll (easier version) dp hashing implementation string suffix structures strings	2800	482
1393E2	Twilight and Ancient Scroll (harder version) dp hashing implementation string suffix structures strings two pointers	3200	521
1387C	Viruses *special dp shortest paths string suffix structures	2900	248
1327G	Letters and Question Marks bitmasks dp string suffix structures	2800	592
1326D1	Prefix-Suffix Palindrome (Easy version) hashing string suffix structures strings	1500	13.4k
1326D2	Prefix-Suffix Palindrome (Hard version) binary search greedy hashing string suffix structures strings	1800	12k
1276F	Asterisk Substrings string suffix structures	3400	561
1266G	Permutation Concatenation string suffix structures	3300	142
1207G	Indie Album data structures dfs and similar hashing string suffix structures strings trees	2700	1.3k
1202E	You Are Given Some Strings... brute force string suffix structures strings	2400	2.9k
1200E	Compress Words brute force hashing implementation string suffix structures strings	2000	9.7k
1129C	Morse Code binary search data structures dp hashing sortings string suffix structures strings	2400	1k
1098F	Ж-function string suffix structures strings	3500	286
1073G	Yet Another LCP Problem data structures string suffix structures	2600	1.2k
1063F	String Journey data structures dp string suffix structures	3300	1.1k
1043G	Speckled Band data structures divide and conquer hashing string suffix structures strings	3500	329
1037H	Security data structures string suffix structures	3200	1.4k
963D	Frequency of String hashing string suffix structures strings	2500	2.9k
961F	k-substrings binary search hashing string suffix structures	2700	966
932G	Palindrome Partition dp string suffix structures strings	2900	1.2k
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
906E	Reverses dp string suffix structures strings	3300	583
873F	Forbidden Indices dsu string suffix structures strings	2400	1.9k
825F	String Compression dp hashing string suffix structures strings	2400	2.1k
822E	Liar binary search dp hashing string suffix structures	2400	1.2k
802G3	Fake News (hard) string suffix structures	2300	1.9k
756D	Bacterial Melee brute force combinatorics dp string suffix structures	2400	1.2k
741E	Arpa’s abnormal DNA and Mehrdad’s deep interest data structures string suffix structures	3400	238
727E	Games on a CD data structures hashing string suffix structures strings	2300	1.6k
710F	String Set Queries brute force data structures hashing interactive string suffix structures strings	2400	2.6k
700E	Cool Slogans string suffix structures strings	3300	1.4k
666E	Forensic Examination data structures string suffix structures	3100	1.7k
653F	Paper task data structures string suffix structures strings	2600	1.2k
633C	Spy Syndrome 2 data structures dp hashing implementation sortings string suffix structures strings	1900	3.4k
631D	Messenger data structures hashing implementation string suffix structures strings	2100	2.5k
616F	Expensive Strings data structures sortings string suffix structures strings	2700	775
594E	Cutting the Line string suffix structures strings	3100	175
557E	Ann and Half-Palindrome data structures dp graphs string suffix structures strings trees	2300	1.3k
547E	Mike and Friends data structures string suffix structures strings trees	2800	2.7k
535D	Tavas and Malekas greedy hashing string suffix structures strings	1900	4.8k
533F	Encoding hashing string suffix structures strings	2400	981
526D	Om Nom and Necklace hashing string suffix structures strings	2200	2.5k
524F	And Yet Another Bracket Sequence data structures greedy hashing string suffix structures strings	2700	640
514C	Watto and Mechanism binary search data structures hashing string suffix structures strings	2000	8.4k
504E	Misha and LCP on Tree binary search dfs and similar hashing string suffix structures trees	3000	1.1k
471D	MUH and Cube Walls string suffix structures strings	1800	10.8k
452E	Three strings data structures dsu string suffix structures strings	2400	1.2k
441D	Valera and Swaps constructive algorithms dsu graphs implementation math string suffix structures	2100	1.3k
432D	Prefixes and Suffixes dp string suffix structures strings two pointers	2000	12.6k
427D	Match & Catch dp string suffix structures strings	2200	2.7k
356E	Xenia and String Problem dp hashing implementation string suffix structures strings	3000	566
319D	Have You Ever Heard About the Word? greedy hashing string suffix structures strings	2800	787
316G2	Good Substrings string suffix structures	2200	521
316G3	Good Substrings string suffix structures	2400	546
235C	Cyclical Quest data structures string suffix structures strings	2700	2.6k
232D	Fence binary search data structures string suffix structures	2900	568
204E	Little Elephant and Strings data structures implementation string suffix structures two pointers	2800	1.7k
149E	Martian Strings string suffix structures strings	2300	2.6k
128B	String brute force constructive algorithms hashing implementation string suffix structures strings	2100	2.9k
126B	Password binary search dp hashing string suffix structures strings	1700	26.1k
123D	String string suffix structures	2300	1.5k

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