strings - Problem Set - HFOJ

	ID	Problem Show tags Hide tags	AC / Tried	Difficulty
	2100	P1536B Prinzessin der Verurteilung brute force constructive algorithms strings *1200	0 / 0	4
	2087	P1537E1 Erase and Extend (Easy Version) binary search brute force dp greedy hashing implementation string suffix structures strings two pointers *1600	0 / 0	5
	2086	P1537E2 Erase and Extend (Hard Version) binary search data structures greedy hashing string suffix structures strings two pointers *2200	0 / 0	8
	2080	P1538E Funny Substrings data structures hashing implementation matrices strings *2100	0 / 0	7
	2076	P1539B Love Song dp implementation strings *800	0 / 0	3
	2040	P1547B Alphabetical Strings greedy implementation strings *800	0 / 0	3
	2011	P1550E Stringforces binary search bitmasks brute force dp strings two pointers *2500	0 / 0	9
	2004	P1551B1 Wonderful Coloring - 1 greedy strings *800	0 / 0	3
	2000	P1551C Interesting Story greedy sortings strings *1500	0 / 0	5
	1991	P1552A Subsequence Permutation sortings strings *800	0 / 0	3
	1971	P1553B Reverse String brute force dp hashing implementation strings *1300	0 / 0	4
	1967	P1553D Backspace dp greedy strings two pointers *1500	0 / 0	5
	1950	P1554D Diane constructive algorithms greedy strings *1800	0 / 0	6
	1944	P1555D Say No to Palindromes brute force constructive algorithms dp strings *1600	0 / 0	5
	1910	P1560D Make a Power of Two greedy math strings *1300	0 / 0	4
	1907	P1560E Polycarp and String Transformation binary search implementation sortings strings *1800	0 / 0	6
	1896	P1562E Rescue Niwen! dp greedy string suffix structures strings *2500	0 / 0	9
	1881	P1567A Domino Disaster implementation strings *800	0 / 0	3
	1813	P1575A Another Sorting Problem data structures sortings strings *1100	0 / 0	3
	1801	P1575H Holiday Wall Ornaments dp strings *2200	0 / 0	8
	1784	P1578H Higher Order Functions implementation strings *1700	0 / 0	5
	1773	P1579A Casimir's String Solitaire math strings *800	0 / 0	3
	1755	P1582C Grandma Capa Knits a Scarf brute force data structures greedy strings two pointers *1200	0 / 0	4
	1727	P1584F Strange LCS bitmasks dp graphs greedy strings *2600	0 / 0	10
	1683	P1594C Make Them Equal brute force greedy math strings *1200	0 / 0	4
	1666	P1598G The Sum of Good Numbers hashing math string suffix structures strings *3200	0 / 0	10
	1621	P1605C Dominant Character brute force greedy implementation strings *1400	0 / 0	4
	1616	P1606A AB Balance strings *900	0 / 0	3
	1609	P1607A Linear Keyboard implementation strings *800	0 / 0	3
	1585	P1608G Alphabetic Tree binary search data structures dfs and similar hashing string suffix structures strings trees *3500	0 / 0	10
	1580	P1609B William the Vigilant implementation strings *1100	0 / 0	3
	1526	P1616B Mirror in the String greedy strings *1100	0 / 0	3
	1523	P1616E Lexicographically Small Enough brute force data structures greedy strings *2200	0 / 0	8
	1519	P1617A Forbidden Subsequence constructive algorithms greedy sortings strings *800	0 / 0	3
	1508	P1618F Reverse bitmasks constructive algorithms dfs and similar implementation math strings *2000	0 / 0	7
	1506	P1619A Square String? implementation strings *800	0 / 0	3
	1472	P1623E Middle Duplication data structures dfs and similar greedy strings trees *2500	0 / 0	9
	1468	P1624D Palindromes Coloring binary search greedy sortings strings *1400	0 / 0	4
	1467	P1624E Masha-forgetful brute force constructive algorithms dp hashing implementation strings *2000	0 / 0	7
	1457	P1626B Minor Reduction greedy strings *1100	0 / 0	3
	1439	P1628B Peculiar Movie Preferences greedy strings *1700	0 / 0	5
	1395	P1634A Reverse and Concatenate greedy strings *800	0 / 0	3
	1386	P1635D Infinite Set bitmasks dp math matrices number theory strings *1800	0 / 0	6
	1324	P1650A Deletions of Two Adjacent Letters implementation strings *800	0 / 0	3
	1310	P1654B Prefix Removals strings *800	0 / 0	3
	1306	P1654F Minimal String Xoration bitmasks data structures divide and conquer greedy hashing sortings strings *2800	0 / 0	10
	1280	P1659B Bit Flipping bitmasks constructive algorithms greedy strings *1300	0 / 0	4
	1273	P1660C Get an Even String dp greedy strings *1300	0 / 0	4
	1270	P1660F1 Promising String (easy version) brute force implementation math strings *1700	0 / 0	5
	1269	P1660F2 Promising String (hard version) data structures implementation math strings *2100	0 / 0	7
	1261	P1662B Toys greedy strings	0 / 0	(None)
	1259	P1662D Evolution of Weasels greedy implementation strings	0 / 0	(None)
	1242	P1663F In Every Generation... *special problem strings	0 / 0	(None)
	1241	P1663G Six Characters *special problem constructive algorithms strings	0 / 0	(None)
	1210	P1669E 2-Letter Strings data structures math strings *1200	0 / 0	4
	1205	P1670B Dorms War brute force implementation strings *1100	0 / 0	3
	1184	P1673A Subtle Substring Subtraction games greedy strings *800	1 / 4	3
	1183	P1673B A Perfectly Balanced String? brute force greedy strings *1100	0 / 0	3
	1176	P1674C Infinite Replacement combinatorics implementation strings *1000	0 / 0	3
	1167	P1675E Replace With the Previous, Minimize dsu greedy strings *1500	0 / 0	5
	1162	P1676C Most Similar Words brute force greedy implementation implementation math strings *800	0 / 0	3
	1142	P1679E Typical Party in Dorm bitmasks combinatorics dp strings *2400	0 / 0	9
	1138	P1680C Binary String binary search greedy strings two pointers *1600	1 / 1	5
	1128	P1682A Palindromic Indices greedy strings *800	0 / 0	3
	1122	P1684A Digit Minimization constructive algorithms games math strings *800	0 / 0	3
	1110	P1685B Linguistics greedy implementation sortings strings *2000	0 / 0	7
	1081	P1688C Manipulating History constructive algorithms greedy strings *1700	0 / 0	5
	1063	P1690F Shifting String graphs math number theory strings *1700	0 / 0	5
	1059	P1691C Sum of Substrings brute force constructive algorithms greedy math strings *1400	0 / 0	4
	1010	P1697C awoo's Favorite Problem binary search constructive algorithms data structures greedy implementation strings two pointers *1400	0 / 0	4
	971	P1701E Text Editor brute force dp greedy strings *2500	0 / 0	9
	961	P1703A YES or YES? brute force implementation strings *800	0 / 0	3
	959	P1703C Cypher brute force implementation strings *800	0 / 0	3
	958	P1703D Double Strings brute force data structures strings *1100	0 / 0	3
	948	P1704G Mio and Lucky Array constructive algorithms fft math strings *3500	0 / 0	10
	939	P1706A Another String Minimization Problem 2-sat constructive algorithms greedy string suffix structures strings *800	0 / 0	3
	923	P1709C Recover an RBS constructive algorithms greedy implementation strings *1800	0 / 0	6
	896	P1714D Color with Occurrences brute force data structures dp greedy strings *1600	0 / 0	5
	861	P1720D1 Xor-Subsequence (easy version) bitmasks brute force dp strings trees two pointers *1800	0 / 0	6
	860	P1720D2 Xor-Subsequence (hard version) bitmasks data structures dp strings trees *2400	0 / 0	9
	854	P1721E Prefix Function Queries dfs and similar dp hashing string suffix structures strings trees *2200	0 / 0	8
	816	P1729B Decode String greedy strings *800	0 / 0	3
	815	P1729C Jumping on Tiles constructive algorithms strings *1100	0 / 0	3
	811	P1729G Cut Substrings combinatorics dp hashing strings two pointers *2100	0 / 0	7
	807	P1730D Prefixes and Suffixes constructive algorithms strings two pointers *2200	0 / 0	8
	777	P1735C Phase Shift dfs and similar dsu graphs greedy implementation strings *1400	0 / 0	4
	769	P1736D Equal Binary Subsequences constructive algorithms geometry greedy implementation strings *2200	0 / 0	8
	767	P1737A Ela Sorting Books greedy implementation strings *900	0 / 0	3
	749	P1738H Palindrome Addicts data structures strings *3300	0 / 0	10
	740	P1739F Keyboard Design bitmasks data structures dp string suffix structures strings *2600	0 / 0	10
	728	P1741A Compare T-Shirt Sizes implementation implementation strings *800	0 / 0	3
	707	P1742F Smaller constructive algorithms greedy strings *1500	0 / 0	5
	655	P1748B Diverse Substrings brute force implementation strings *1400	0 / 0	4
	627	P1750E Bracket Cost binary search data structures divide and conquer dp greedy strings *2400	0 / 0	9
	626	P1750F Majority combinatorics dp math strings *2700	0 / 0	10
	603	P1758A SSeeeeiinngg DDoouubbllee constructive algorithms strings *800	0 / 0	3
	591	P1759A Yes-Yes? implementation strings *800	1 / 1	3
	574	P1760B Atilla's Favorite Problem greedy implementation strings *800	0 / 0	3
	441	P1771D Hossam and (sub-)palindromic tree brute force data structures dfs and similar dp strings trees *2100	0 / 0	7
	438	P1771F Hossam and Range Minimum Query binary search bitmasks data structures hashing probabilities strings trees *2500	0 / 0	9

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