Problemset - Codeforces

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Codeforces Round 953 (Div. 2)
26:08:38
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strings

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Problems

#	Name
1985A	Creating Words implementation, strings		x36384
1984D	''a'' String Problem brute force, hashing, implementation, math, string suffix structures, strings	2000	x2254
1980G	Yasya and the Mysterious Tree bitmasks, data structures, dfs and similar, graphs, greedy, strings, trees	2300	x794
1979D	Fixing a Binary String bitmasks, brute force, constructive algorithms, dp, greedy, hashing, strings	1800	x4867
1976A	Verify Password implementation, sortings, strings	800	x23899
1975H	378QAQ and Core greedy, strings	3500	x59
1975G	Zimpha Fan Club fft, greedy, math, strings	3000	x173
1974B	Symmetric Encoding implementation, sortings, strings	800	x27046
1971D	Binary Cut dp, greedy, implementation, sortings, strings	1100	x22226
1971B	Different String implementation, strings	800	x31537
1970D2	Arithmancy (Medium) constructive algorithms, interactive, probabilities, strings	2600	x150
1970D1	Arithmancy (Easy) brute force, constructive algorithms, interactive, strings	2100	x463
1968G2	Division + LCP (hard version) binary search, brute force, data structures, dp, hashing, math, string suffix structures, strings	2200	x1580
1968G1	Division + LCP (easy version) binary search, data structures, dp, hashing, string suffix structures, strings	1900	x3545
1965C	Folding Strip constructive algorithms, greedy, strings	2300	x1578
1952H	Palindrome implementation, strings		x367
1952B	Is it stated? strings		x10480
1952A	Are You a Robot, Again? strings		x11587
1951E	No Palindromes brute force, constructive algorithms, divide and conquer, greedy, hashing, implementation, math, strings	2000	x3210
1950G	Shuffling Songs bitmasks, dfs and similar, dp, graphs, hashing, implementation, strings	1900	x3759
1950E	Nearly Shortest Repeating Substring brute force, implementation, number theory, strings	1500	x12795
1948D	Tandem Repeats? brute force, strings, two pointers	1700	x8506
1943B	Non-Palindromic Substring hashing, implementation, math, strings	2000	x3454
1941C	Rudolf and the Ugly String dp, greedy, strings	900	x30680
1935A	Entertainment in MAC constructive algorithms, strings	800	x26214
1931A	Recovering a Small String brute force, strings	800	x34207
1930D2	Sum over all Substrings (Hard Version) bitmasks, divide and conquer, dp, dsu, greedy, implementation, strings	2100	x2435
1930D1	Sum over all Substrings (Easy Version) brute force, dp, greedy, strings	1800	x3803
1927B	Following the String constructive algorithms, greedy, strings	900	x31060
1927A	Make it White greedy, strings	800	x40504
1925A	We Got Everything Covered! constructive algorithms, greedy, strings	800	x27623
1924A	Did We Get Everything Covered? constructive algorithms, dp, greedy, shortest paths, strings	1500	x12718
1923F	Shrink-Reverse binary search, brute force, greedy, hashing, implementation, string suffix structures, strings	2800	x341
1922A	Tricky Template constructive algorithms, implementation, strings	800	x26175
1917B	Erase First or Second Letter brute force, combinatorics, data structures, dp, strings	1100	x20007
1915D	Unnatural Language Processing greedy, implementation, strings	900	x28364
1914A	Problemsolving Log implementation, strings	800	x30226
1913F	Palindromic Problem binary search, data structures, hashing, string suffix structures, strings	2800	x293
1913B	Swap and Delete strings	1000	x22961
1912L	LOL Lovers strings	800	x6493
1909G	Pumping Lemma hashing, strings	3000	x336
1907C	Removal of Unattractive Pairs constructive algorithms, greedy, math, strings	1200	x18854
1907B	YetnotherrokenKeoard data structures, implementation, strings	1000	x23868
1905C	Largest Subsequence greedy, strings	1400	x11303
1902E	Collapsing Strings data structures, strings, trees	1900	x3971
1900A	Cover in Water constructive algorithms, greedy, implementation, strings	800	x23147
1898E	Sofia and Strings data structures, greedy, sortings, strings, two pointers	2200	x2091
1898A	Milica and String brute force, implementation, strings	800	x15293
1896B	AB Flipping greedy, strings, two pointers	900	x13766
1894A	Secret Sport implementation, strings	800	x18328
1886C	Decreasing String implementation, strings	1600	x10523
1883B	Chemistry strings	900	x28058
1881A	Don't Try to Count brute force, strings	800	x28444
1867B	XOR Palindromes bitmasks, constructive algorithms, strings	1100	x16148
1864E	Guess Game bitmasks, data structures, games, math, probabilities, sortings, strings, trees	2100	x2487
1864B	Swap and Reverse constructive algorithms, greedy, sortings, strings	1100	x14916
1862A	Gift Carpet dp, greedy, implementation, strings	800	x31275
1861C	Queries for the Array data structures, dfs and similar, implementation, strings, trees	1600	x9625
1860A	Not a Substring constructive algorithms, strings	900	x21061
1851F	Lisa and the Martians bitmasks, greedy, math, strings, trees	1800	x5447
1850C	Word on the Paper implementation, strings	800	x41986
1849C	Binary String Copying binary search, brute force, data structures, hashing, strings	1600	x9996
1847D	Professor Higashikata data structures, dsu, greedy, implementation, strings	1900	x3639
1846B	Rudolph and Tic-Tac-Toe brute force, implementation, strings	800	x26284
1845C	Strong Password binary search, dp, greedy, strings	1400	x13544
1844D	Row Major constructive algorithms, greedy, math, number theory, strings	1400	x11792
1841C	Ranom Numbers brute force, dp, greedy, math, strings	1800	x7405
1840A	Cipher Shifer implementation, strings, two pointers	800	x33022
1838D	Bracket Walk data structures, greedy, strings	2100	x3109
1834C	Game with Reversing games, greedy, math, strings	1200	x12791
1833A	Musical Puzzle implementation, strings	800	x31815
1832A	New Palindrome strings	800	x25052
1829A	Love Story implementation, strings	800	x47248
1827C	Palindrome Partition binary search, brute force, data structures, dp, hashing, strings	2600	x1159
1825A	LuoTianyi and the Palindrome String greedy, strings	800	x19373
1823D	Unique Palindromes constructive algorithms, math, strings	1900	x3696
1822E	Making Anti-Palindromes greedy, math, strings	1600	x9877
1821E	Rearrange Brackets brute force, dp, greedy, sortings, strings	2100	x2280
1821C	Tear It Apart brute force, implementation, math, strings	1300	x13762
1820B	JoJo's Incredible Adventures math, strings, two pointers	1100	x13656
1820A	Yura's New Name implementation, strings	800	x16445
1817F	Entangled Substrings string suffix structures, strings	3500	x185
1815E	Bosco and Particle dp, math, number theory, strings	3100	x330
1812J	Unmysterious Language *special problem, constructive algorithms, strings		x5814
1812A	Are You a Robot? special problem, special problem, *special problem, expression parsing, strings		x13111
1811A	Insert Digit greedy, math, strings	800	x30291
1807C	Find and Replace greedy, implementation, strings	800	x29511
1805B	The String Has a Target greedy, strings	800	x18291
1801G	A task for substrings data structures, string suffix structures, strings	3400	x354
1800F	Dasha and Nightmares bitmasks, hashing, meet-in-the-middle, strings	1900	x3741
1800E2	Unforgivable Curse (hard version) brute force, constructive algorithms, dfs and similar, dsu, graphs, greedy, strings	1500	x12243
1800E1	Unforgivable Curse (easy version) brute force, constructive algorithms, dsu, graphs, greedy, strings	1400	x12290
1800D	Remove Two Letters data structures, greedy, hashing, strings	1200	x22049
1800B	Count the Number of Pairs greedy, strings	1000	x24187
1800A	Is It a Cat? implementation, strings	800	x30282
1799C	Double Lexicographically Minimum greedy, strings	1700	x5571
1796B	Asterisk-Minor Template implementation, strings	1000	x16147
1796A	Typical Interview Problem brute force, implementation, strings	800	x18626
1795A	Two Towers brute force, implementation, strings	800	x23346
1794A	Prefix and Suffix Array strings	800	x16744

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