Problemset - Codeforces

→ Pay attention

Before contest
Codeforces Round #792 (Div. 1 + Div. 2)
34:10:44
Register now »

*has extra registration

→ Filter Problems

Difficulty: —

strings

Add tag

Problems

#	Name
1680C	Binary String binary search, greedy, strings, two pointers	1600	x4697
1679E	Typical Party in Dorm bitmasks, brute force, combinatorics, dp, math, strings	2400	x473
1676C	Most Similar Words brute force, greedy, implementation, implementation, math, strings	800	x17922
1675E	Replace With the Previous, Minimize dsu, greedy, strings	1500	x5395
1674C	Infinite Replacement combinatorics, implementation, strings	1000	x14399
1673B	A Perfectly Balanced String? brute force, greedy, strings	1100	x9933
1673A	Subtle Substring Subtraction games, greedy, strings	800	x14650
1670B	Dorms War brute force, implementation, strings	1100	x8595
1669E	2-Letter Strings data structures, math, strings	1200	x10031
1663G	Six Characters constructive algorithms, strings		x114
1663F	In Every Generation... strings		x221
1662D	Evolution of Weasels greedy, implementation, strings		x669
1662B	Toys greedy, strings		x87
1660F2	Promising String (hard version) data structures, implementation, math, strings	2100	x1771
1660F1	Promising String (easy version) brute force, implementation, math, strings	1700	x5001
1660C	Get an Even String dp, greedy, strings	1300	x12723
1659B	Bit Flipping bitmasks, constructive algorithms, greedy, strings	1300	x7150
1654F	Minimal String Xoration bitmasks, data structures, divide and conquer, greedy, hashing, sortings, strings	2800	x597
1654B	Prefix Removals strings	800	x13669
1650A	Deletions of Two Adjacent Letters implementation, strings	800	x26135
1635D	Infinite Set bitmasks, dp, math, matrices, number theory, strings	1800	x4305
1634A	Reverse and Concatenate greedy, strings	800	x20887
1628B	Peculiar Movie Preferences greedy, strings	1700	x8618
1626B	Minor Reduction greedy, strings	1100	x17683
1624E	Masha-forgetful brute force, constructive algorithms, dp, hashing, implementation, strings	2000	x2922
1624D	Palindromes Coloring binary search, greedy, sortings, strings	1400	x11554
1623E	Middle Duplication data structures, dfs and similar, greedy, strings, trees	2500	x828
1619A	Square String? implementation, strings	800	x29973
1618F	Reverse bitmasks, constructive algorithms, dfs and similar, implementation, math, strings	2000	x3076
1617A	Forbidden Subsequence constructive algorithms, greedy, sortings, strings	800	x14338
1616E	Lexicographically Small Enough brute force, data structures, greedy, strings	2200	x1937
1616B	Mirror in the String greedy, strings	1100	x15351
1609B	William the Vigilant implementation, strings	1100	x9867
1608G	Alphabetic Tree binary search, data structures, dfs and similar, hashing, string suffix structures, strings, trees	3500	x87
1607A	Linear Keyboard implementation, strings	800	x27945
1606A	AB Balance strings	900	x17142
1605C	Dominant Character brute force, greedy, implementation, strings	1400	x11569
1598G	The Sum of Good Numbers hashing, math, string suffix structures, strings	3200	x172
1594C	Make Them Equal brute force, greedy, math, strings	1200	x12851
1584F	Strange LCS bitmasks, dp, graphs, greedy, strings	2600	x604
1582C	Grandma Capa Knits a Scarf brute force, data structures, greedy, strings, two pointers	1200	x10659
1579A	Casimir's String Solitaire math, strings	800	x29742
1578H	Higher Order Functions implementation, strings	1700	x1612
1575H	Holiday Wall Ornaments dp, strings	2200	x399
1575A	Another Sorting Problem data structures, sortings, strings	1100	x2833
1567A	Domino Disaster implementation, strings	800	x24664
1562E	Rescue Niwen! dp, greedy, string suffix structures, strings	2500	x985
1560E	Polycarp and String Transformation binary search, implementation, sortings, strings	1800	x6191
1560D	Make a Power of Two greedy, math, strings	1300	x14076
1555D	Say No to Palindromes brute force, constructive algorithms, dp, strings	1600	x8860
1554D	Diane constructive algorithms, greedy, strings	1800	x7032
1553D	Backspace dp, greedy, strings, two pointers	1500	x10162
1553B	Reverse String brute force, dp, hashing, implementation, strings	1300	x11246
1552A	Subsequence Permutation sortings, strings	800	x20550
1551C	Interesting Story greedy, sortings, strings	1500	x10087
1551B1	Wonderful Coloring - 1 greedy, strings	800	x24603
1550E	Stringforces binary search, bitmasks, brute force, dp, strings, two pointers	2500	x1100
1547B	Alphabetical Strings greedy, implementation, strings	800	x22512
1539B	Love Song dp, implementation, strings	800	x19706
1538E	Funny Substrings data structures, hashing, implementation, matrices, strings	2100	x2310
1537E2	Erase and Extend (Hard Version) binary search, data structures, greedy, hashing, string suffix structures, strings, two pointers	2200	x3843
1537E1	Erase and Extend (Easy Version) binary search, brute force, dp, greedy, hashing, implementation, string suffix structures, strings, two pointers	1600	x9365
1536B	Prinzessin der Verurteilung brute force, constructive algorithms, strings	1200	x14788
1535F	String Distance binary search, brute force, data structures, hashing, implementation, strings	3000	x292
1535C	Unstable String binary search, dp, greedy, implementation, strings, two pointers	1400	x12590
1532F	Prefixes and Suffixes *special problem, strings		x208
1530E	Minimax constructive algorithms, greedy, strings	2100	x2465
1526D	Kill Anton brute force, constructive algorithms, data structures, math, strings	2200	x2047
1512C	A-B Palindrome constructive algorithms, implementation, strings	1200	x15553
1511F	Chainword brute force, data structures, dp, matrices, string suffix structures, strings	2700	x260
1511D	Min Cost String brute force, constructive algorithms, graphs, greedy, strings	1600	x8772
1508A	Binary Literature constructive algorithms, greedy, implementation, strings, two pointers	1900	x5120
1506G	Maximize the Remaining String brute force, data structures, dp, greedy, strings	2000	x3342
1506C	Double-ended Strings brute force, implementation, strings	1000	x19214
1504A	Déjà Vu constructive algorithms, strings	800	x18992
1499E	Chaotic Merge combinatorics, dp, math, strings	2400	x1103
1496A	Split it! brute force, constructive algorithms, greedy, strings	900	x17517
1493E	Enormous XOR bitmasks, constructive algorithms, greedy, math, strings, two pointers	2600	x681
1493C	K-beautiful Strings binary search, brute force, constructive algorithms, greedy, strings	2000	x3858
1481A	Space Navigation greedy, strings	800	x22248
1480A	Yet Another String Game games, greedy, strings	800	x22424
1476E	Pattern Matching bitmasks, data structures, dfs and similar, graphs, hashing, sortings, strings	2300	x1825
1473D	Program data structures, dp, implementation, strings	1700	x7481
1473B	String LCM brute force, math, number theory, strings	1000	x22817
1469E	A Bit Similar bitmasks, brute force, hashing, string suffix structures, strings, two pointers	2400	x1553
1466G	Song of the Sirens combinatorics, divide and conquer, hashing, math, string suffix structures, strings	2600	x701
1466C	Canine poetry dp, greedy, strings	1300	x14961
1462B	Last Year's Substring dp, implementation, strings	800	x23064
1451C	String Equality dp, greedy, hashing, implementation, strings	1400	x12620
1451B	Non-Substring Subsequence dp, greedy, implementation, strings	900	x17029
1446B	Catching Cheaters dp, strings	1800	x6210
1437G	Death DBMS data structures, string suffix structures, strings, trees	2600	x652
1431I	Cyclic Shifts *special problem, strings	2900	x30
1430E	String Reversal data structures, greedy, strings	1900	x4935
1428C	ABBB brute force, data structures, greedy, strings	1100	x15692
1426F	Number of Subsequences combinatorics, dp, strings	2000	x3989
1422E	Minlexes dp, greedy, implementation, strings	2700	x596
1421C	Palindromifier constructive algorithms, strings	1400	x10718
1416C	XOR Inverse bitmasks, data structures, divide and conquer, dp, greedy, math, sortings, strings, trees	2000	x3241
1411E	Poman Numbers bitmasks, greedy, math, strings	2300	x1368

←