Problemset - Codeforces

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Codeforces Round 973 (Div. 2)
13:43:32
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strings

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Problems

#	Name
1812A	Are You a Robot? special problem, special problem, *special problem, expression parsing, strings		x13273
1811A	Insert Digit greedy, math, strings	800	x30967
1807C	Find and Replace greedy, implementation, strings	800	x30306
1805B	The String Has a Target greedy, strings	800	x18524
1801G	A task for substrings data structures, string suffix structures, strings	3400	x369
1800F	Dasha and Nightmares bitmasks, hashing, meet-in-the-middle, strings	1900	x3873
1800E2	Unforgivable Curse (hard version) brute force, constructive algorithms, dfs and similar, dsu, graphs, greedy, strings	1500	x12736
1800E1	Unforgivable Curse (easy version) brute force, constructive algorithms, dsu, graphs, greedy, strings	1400	x12766
1800D	Remove Two Letters data structures, greedy, hashing, strings	1200	x23369
1800B	Count the Number of Pairs greedy, strings	1000	x25033
1800A	Is It a Cat? implementation, strings	800	x31302
1799C	Double Lexicographically Minimum greedy, strings	1700	x5785
1796B	Asterisk-Minor Template implementation, strings	1000	x16511
1796A	Typical Interview Problem brute force, implementation, strings	800	x18818
1795A	Two Towers brute force, implementation, strings	800	x23557
1794A	Prefix and Suffix Array strings	800	x17107
1791D	Distinct Split brute force, greedy, strings	1000	x30261
1791A	Codeforces Checking implementation, strings	800	x59925
1790A	Polycarp and the Day of Pi implementation, math, strings	800	x36872
1789F	Serval and Brain Power bitmasks, brute force, dp, greedy, implementation, strings	2700	x713
1789B	Serval and Inversion Magic brute force, implementation, strings, two pointers	800	x16137
1781C	Equal Frequencies brute force, constructive algorithms, greedy, implementation, sortings, strings	1600	x7554
1779A	Hall of Fame constructive algorithms, greedy, strings	800	x23114
1778C	Flexible String bitmasks, brute force, strings	1600	x8168
1777F	Comfortably Numb bitmasks, data structures, divide and conquer, strings, trees	2400	x931
1776G	Another Wine Tasting Event combinatorics, constructive algorithms, math, strings	2100	x2037
1771F	Hossam and Range Minimum Query binary search, bitmasks, data structures, hashing, probabilities, strings, trees	2500	x1113
1771D	Hossam and (sub-)palindromic tree brute force, data structures, dfs and similar, dp, strings, trees	2100	x2743
1760B	Atilla's Favorite Problem greedy, implementation, strings	800	x44187
1759A	Yes-Yes? implementation, strings	800	x29820
1758A	SSeeeeiinngg DDoouubbllee constructive algorithms, strings	800	x25120
1750F	Majority combinatorics, dp, math, strings	2700	x903
1750E	Bracket Cost binary search, data structures, divide and conquer, dp, greedy, strings	2400	x1406
1748B	Diverse Substrings brute force, implementation, strings	1400	x14977
1742F	Smaller constructive algorithms, greedy, strings	1500	x11597
1741A	Compare T-Shirt Sizes implementation, implementation, strings	800	x30737
1739F	Keyboard Design bitmasks, data structures, dp, string suffix structures, strings	2600	x528
1738H	Palindrome Addicts data structures, strings	3300	x235
1737A	Ela Sorting Books greedy, implementation, strings	900	x10115
1736D	Equal Binary Subsequences constructive algorithms, geometry, greedy, implementation, strings	2200	x2471
1735C	Phase Shift dfs and similar, dsu, graphs, greedy, implementation, strings	1400	x9869
1730D	Prefixes and Suffixes constructive algorithms, strings, two pointers	2200	x2656
1729G	Cut Substrings combinatorics, dp, hashing, strings, two pointers	2100	x2164
1729C	Jumping on Tiles constructive algorithms, strings	1100	x19902
1729B	Decode String greedy, strings	800	x30055
1721E	Prefix Function Queries dfs and similar, dp, hashing, string suffix structures, strings, trees	2200	x1958
1720D2	Xor-Subsequence (hard version) bitmasks, data structures, dp, strings, trees	2400	x1830
1720D1	Xor-Subsequence (easy version) bitmasks, brute force, dp, strings, trees, two pointers	1800	x5952
1714D	Color with Occurrences brute force, data structures, dp, greedy, strings	1600	x9038
1709C	Recover an RBS constructive algorithms, greedy, implementation, strings	1800	x8827
1706A	Another String Minimization Problem 2-sat, constructive algorithms, greedy, string suffix structures, strings	800	x22894
1704G	Mio and Lucky Array constructive algorithms, fft, math, strings	3500	x112
1703D	Double Strings brute force, data structures, strings	1100	x25495
1703C	Cypher brute force, implementation, strings	800	x35378
1703A	YES or YES? brute force, implementation, strings	800	x68412
1701E	Text Editor brute force, dp, greedy, strings	2500	x1122
1697C	awoo's Favorite Problem binary search, constructive algorithms, data structures, greedy, implementation, strings, two pointers	1400	x14312
1691C	Sum of Substrings brute force, constructive algorithms, greedy, math, strings	1400	x15592
1690F	Shifting String graphs, math, number theory, strings	1700	x7128
1688C	Manipulating History constructive algorithms, greedy, strings	1700	x8122
1685B	Linguistics greedy, implementation, sortings, strings	2000	x3259
1684A	Digit Minimization constructive algorithms, games, math, strings	800	x23802
1682A	Palindromic Indices greedy, strings	800	x19258
1680C	Binary String binary search, greedy, strings, two pointers	1600	x9893
1679E	Typical Party in Dorm bitmasks, combinatorics, dp, strings	2400	x1151
1676C	Most Similar Words brute force, greedy, implementation, implementation, math, strings	800	x30023
1675E	Replace With the Previous, Minimize dsu, greedy, strings	1500	x10575
1674C	Infinite Replacement combinatorics, implementation, strings	1000	x23537
1673B	A Perfectly Balanced String? brute force, greedy, strings	1100	x15099
1673A	Subtle Substring Subtraction games, greedy, strings	800	x18419
1670B	Dorms War brute force, implementation, strings	1100	x12635
1669E	2-Letter Strings data structures, math, strings	1200	x17787
1663G	Six Characters *special problem, constructive algorithms, strings		x211
1663F	In Every Generation... *special problem, strings		x340
1662D	Evolution of Weasels greedy, implementation, strings		x1794
1662B	Toys greedy, strings		x136
1660F2	Promising String (hard version) data structures, implementation, math, strings	2100	x2703
1660F1	Promising String (easy version) brute force, implementation, math, strings	1700	x7228
1660C	Get an Even String dp, greedy, strings	1300	x19497
1659B	Bit Flipping bitmasks, constructive algorithms, greedy, strings	1300	x10907
1654F	Minimal String Xoration bitmasks, data structures, divide and conquer, greedy, hashing, sortings, strings	2800	x1187
1654B	Prefix Removals strings	800	x15598
1650A	Deletions of Two Adjacent Letters implementation, strings	800	x34632
1635D	Infinite Set bitmasks, dp, math, matrices, number theory, strings	1800	x6234
1634A	Reverse and Concatenate greedy, strings	800	x23853
1628B	Peculiar Movie Preferences greedy, strings	1700	x11568
1626B	Minor Reduction greedy, strings	1100	x22772
1624E	Masha-forgetful brute force, constructive algorithms, dp, hashing, implementation, strings	2000	x4078
1624D	Palindromes Coloring binary search, greedy, sortings, strings	1400	x16929
1623E	Middle Duplication data structures, dfs and similar, greedy, strings, trees	2500	x1096
1619A	Square String? implementation, strings	800	x51177
1618F	Reverse bitmasks, constructive algorithms, dfs and similar, implementation, math, strings	2000	x4185
1617A	Forbidden Subsequence constructive algorithms, greedy, sortings, strings	800	x16260
1616E	Lexicographically Small Enough brute force, data structures, greedy, strings	2200	x2481
1616B	Mirror in the String greedy, strings	1100	x19631
1609B	William the Vigilant implementation, strings	1100	x11676
1608G	Alphabetic Tree binary search, data structures, dfs and similar, hashing, string suffix structures, strings, trees	3500	x157
1607A	Linear Keyboard implementation, strings	800	x37274
1606A	AB Balance strings	900	x24472
1605C	Dominant Character brute force, greedy, implementation, strings	1400	x16901