Problemset - Codeforces

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Codeforces Global Round 26
05:11:56
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Problems

#	Name
1980G	Yasya and the Mysterious Tree bitmasks, data structures, dfs and similar, graphs, greedy, strings, trees		x703
1979D	Fixing a Binary String bitmasks, brute force, constructive algorithms, greedy, hashing, strings		x4309
1976A	Verify Password implementation, sortings, strings		x23215
1975H	378QAQ and Core greedy, strings	3500	x50
1975G	Zimpha Fan Club fft, greedy, math, strings	3000	x158
1974B	Symmetric Encoding implementation, sortings, strings	800	x26705
1971D	Binary Cut dp, greedy, implementation, sortings, strings	1100	x21620
1971B	Different String implementation, strings	800	x30732
1970D2	Arithmancy (Medium) constructive algorithms, interactive, probabilities, strings	2600	x145
1970D1	Arithmancy (Easy) brute force, constructive algorithms, interactive, strings	2100	x455
1968G2	Division + LCP (hard version) binary search, brute force, data structures, dp, hashing, math, string suffix structures, strings	2200	x1540
1968G1	Division + LCP (easy version) binary search, data structures, dp, hashing, string suffix structures, strings	1900	x3485
1965C	Folding Strip constructive algorithms, greedy, strings	2300	x1565
1952H	Palindrome implementation, strings		x366
1952B	Is it stated? strings		x10458
1952A	Are You a Robot, Again? strings		x11553
1951E	No Palindromes brute force, constructive algorithms, divide and conquer, greedy, hashing, implementation, math, strings	2000	x3178
1950G	Shuffling Songs bitmasks, dfs and similar, dp, graphs, hashing, implementation, strings	1900	x3708
1950E	Nearly Shortest Repeating Substring brute force, implementation, number theory, strings	1500	x12612
1948D	Tandem Repeats? brute force, strings, two pointers	1700	x8458
1943B	Non-Palindromic Substring hashing, implementation, math, strings	2000	x3439
1941C	Rudolf and the Ugly String dp, greedy, strings	900	x30521
1935A	Entertainment in MAC constructive algorithms, strings	800	x26098
1931A	Recovering a Small String brute force, strings	800	x34126
1930D2	Sum over all Substrings (Hard Version) bitmasks, divide and conquer, dp, dsu, greedy, implementation, strings	2100	x2422
1930D1	Sum over all Substrings (Easy Version) brute force, dp, greedy, strings	1800	x3780
1927B	Following the String constructive algorithms, greedy, strings	900	x30957
1927A	Make it White greedy, strings	800	x40386
1925A	We Got Everything Covered! constructive algorithms, greedy, strings	800	x27564
1924A	Did We Get Everything Covered? constructive algorithms, dp, greedy, shortest paths, strings	1500	x12655
1923F	Shrink-Reverse binary search, brute force, greedy, hashing, implementation, string suffix structures, strings	2800	x338
1922A	Tricky Template constructive algorithms, implementation, strings	800	x26135
1917B	Erase First or Second Letter brute force, combinatorics, data structures, dp, strings	1100	x19902
1915D	Unnatural Language Processing greedy, implementation, strings	900	x28195
1914A	Problemsolving Log implementation, strings	800	x30154
1913F	Palindromic Problem binary search, data structures, hashing, string suffix structures, strings	2800	x293
1913B	Swap and Delete strings	1000	x22785
1912L	LOL Lovers strings	800	x6472
1909G	Pumping Lemma hashing, strings	3000	x332
1907C	Removal of Unattractive Pairs constructive algorithms, greedy, math, strings	1200	x18793
1907B	YetnotherrokenKeoard data structures, implementation, strings	1000	x23779
1905C	Largest Subsequence greedy, strings	1400	x11251
1902E	Collapsing Strings data structures, strings, trees	1900	x3954
1900A	Cover in Water constructive algorithms, greedy, implementation, strings	800	x22951
1898E	Sofia and Strings data structures, greedy, sortings, strings, two pointers	2200	x2084
1898A	Milica and String brute force, implementation, strings	800	x15254
1896B	AB Flipping greedy, strings, two pointers	900	x13699
1894A	Secret Sport implementation, strings	800	x18282
1886C	Decreasing String implementation, strings	1600	x10477
1883B	Chemistry strings	900	x27887
1881A	Don't Try to Count brute force, strings	800	x28304
1867B	XOR Palindromes bitmasks, constructive algorithms, strings	1100	x16100
1864E	Guess Game bitmasks, data structures, games, math, probabilities, sortings, strings, trees	2100	x2485
1864B	Swap and Reverse constructive algorithms, greedy, sortings, strings	1100	x14900
1862A	Gift Carpet dp, greedy, implementation, strings	800	x31219
1861C	Queries for the Array data structures, dfs and similar, implementation, strings, trees	1600	x9614
1860A	Not a Substring constructive algorithms, strings	900	x21023
1851F	Lisa and the Martians bitmasks, greedy, math, strings, trees	1800	x5419
1850C	Word on the Paper implementation, strings	800	x41786
1849C	Binary String Copying binary search, brute force, data structures, hashing, strings	1600	x9974
1847D	Professor Higashikata data structures, dsu, greedy, implementation, strings	1900	x3629
1846B	Rudolph and Tic-Tac-Toe brute force, implementation, strings	800	x26259
1845C	Strong Password binary search, dp, greedy, strings	1400	x13507
1844D	Row Major constructive algorithms, greedy, math, number theory, strings	1400	x11755
1841C	Ranom Numbers brute force, dp, greedy, math, strings	1800	x7389
1840A	Cipher Shifer implementation, strings, two pointers	800	x32950
1838D	Bracket Walk data structures, greedy, strings	2100	x3103
1834C	Game with Reversing games, greedy, math, strings	1200	x12763
1833A	Musical Puzzle implementation, strings	800	x31791
1832A	New Palindrome strings	800	x25033
1829A	Love Story implementation, strings	800	x46996
1827C	Palindrome Partition binary search, brute force, data structures, dp, hashing, strings	2600	x1158
1825A	LuoTianyi and the Palindrome String greedy, strings	800	x19362
1823D	Unique Palindromes constructive algorithms, math, strings	1900	x3685
1822E	Making Anti-Palindromes greedy, math, strings	1600	x9846
1821E	Rearrange Brackets brute force, dp, greedy, sortings, strings	2100	x2274
1821C	Tear It Apart brute force, implementation, math, strings	1300	x13738
1820B	JoJo's Incredible Adventures math, strings, two pointers	1100	x13605
1820A	Yura's New Name implementation, strings	800	x16431
1817F	Entangled Substrings string suffix structures, strings	3500	x184
1815E	Bosco and Particle dp, math, number theory, strings	3100	x330
1812J	Unmysterious Language *special problem, constructive algorithms, strings		x5813
1812A	Are You a Robot? special problem, special problem, *special problem, expression parsing, strings		x13103
1811A	Insert Digit greedy, math, strings	800	x30259
1807C	Find and Replace greedy, implementation, strings	800	x29420
1805B	The String Has a Target greedy, strings	800	x18279
1801G	A task for substrings data structures, string suffix structures, strings	3400	x353
1800F	Dasha and Nightmares bitmasks, hashing, meet-in-the-middle, strings	1900	x3733
1800E2	Unforgivable Curse (hard version) brute force, constructive algorithms, dfs and similar, dsu, graphs, greedy, strings	1500	x12217
1800E1	Unforgivable Curse (easy version) brute force, constructive algorithms, dsu, graphs, greedy, strings	1400	x12269
1800D	Remove Two Letters data structures, greedy, hashing, strings	1200	x21991
1800B	Count the Number of Pairs greedy, strings	1000	x24156
1800A	Is It a Cat? implementation, strings	800	x30250
1799C	Double Lexicographically Minimum greedy, strings	1700	x5539
1796B	Asterisk-Minor Template implementation, strings	1000	x16133
1796A	Typical Interview Problem brute force, implementation, strings	800	x18618
1795A	Two Towers brute force, implementation, strings	800	x23330
1794A	Prefix and Suffix Array strings	800	x16714
1791D	Distinct Split brute force, greedy, strings	1000	x27530
1791A	Codeforces Checking implementation, strings	800	x56141

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