Problemset - Codeforces

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Codeforces Round 945 (Div. 2)
3 days
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Problems

#	Name
1842H	Tenzing and Random Real Numbers bitmasks, dp, graphs, math, probabilities	3000	x561
1842G	Tenzing and Random Operations combinatorics, dp, math, probabilities	2800	x928
1842E	Tenzing and Triangle data structures, dp, geometry, greedy, math	2300	x1540
1842C	Tenzing and Balls dp	1500	x11710
1841C	Ranom Numbers brute force, dp, greedy, math, strings	1800	x7318
1840F	Railguns brute force, dfs and similar, dp, graphs	2200	x1705
1839E	Decreasing Game constructive algorithms, dfs and similar, dp, greedy, interactive	2400	x1161
1839D	Ball Sorting data structures, dp, sortings	2100	x2180
1838E	Count Supersequences combinatorics, dp, math	2500	x1372
1835E	Old Mobile combinatorics, dp, probabilities	3500	x202
1833G	Ksyusha and Chinchilla constructive algorithms, dfs and similar, dp, dsu, greedy, implementation, trees	1800	x4951
1832F	Zombies binary search, dp	3200	x253
1832E	Combinatorics Problem brute force, combinatorics, dp	2200	x2058
1830F	The Third Grace data structures, dp	3200	x221
1830D	Mex Tree brute force, dp, trees	2800	x604
1830A	Copil Copac Draws Trees dfs and similar, dp, graphs, trees	1400	x12473
1829H	Don't Blame Me bitmasks, combinatorics, dp, math	1700	x7095
1829G	Hits Different data structures, dp, implementation, math	1600	x9426
1829D	Gold Rush brute force, dfs and similar, dp, implementation	1000	x24272
1827C	Palindrome Partition binary search, brute force, data structures, dp, hashing, strings	2600	x1145
1827B2	Range Sorting (Hard Version) binary search, data structures, dp, greedy	2400	x1774
1827B1	Range Sorting (Easy Version) binary search, dp, dsu, greedy, trees, two pointers	2000	x3669
1826E	Walk the Runway bitmasks, brute force, data structures, dp, graphs, implementation, sortings	2400	x1504
1826D	Running Miles brute force, dp, greedy	1700	x8579
1824C	LuoTianyi and XOR-Tree data structures, dfs and similar, dp, dsu, greedy, trees	2500	x1255
1823F	Random Walk dp, graphs, math, probabilities, trees	2600	x788
1823E	Removing Graph brute force, dp, games, graphs, math	2500	x1199
1822F	Gardening Friends brute force, dfs and similar, dp, graphs, trees	1700	x5582
1821F	Timber combinatorics, dp, fft, math	2600	x705
1821E	Rearrange Brackets brute force, dp, greedy, sortings, strings	2100	x2247
1819F	Willy-nilly, Crack, Into Release! data structures, dp	3500	x127
1819D	Misha and Apples brute force, data structures, dp, two pointers	2800	x597
1819C	The Fox and the Complete Tree Traversal constructive algorithms, dp, implementation, math, trees	2400	x1396
1815E	Bosco and Particle dp, math, number theory, strings	3100	x326
1815D	XOR Counting bitmasks, combinatorics, dp, math	2600	x1040
1814E	Chain Chips data structures, dp, matrices	2300	x1253
1811G2	Vlad and the Nice Paths (hard version) binary search, combinatorics, data structures, dp, math, two pointers	2200	x1621
1811G1	Vlad and the Nice Paths (easy version) combinatorics, dp, math	2100	x1916
1811E	Living Sequence binary search, dp, math, number theory	1500	x11579
1810G	The Maximum Prefix dp	3200	x634
1809G	Prediction combinatorics, dp, math	2800	x413
1809E	Two Tanks binary search, dp, implementation, math	2400	x792
1808E3	Minibuses on Venus (hard version) brute force, combinatorics, dp, math	2800	x419
1808E2	Minibuses on Venus (medium version) combinatorics, divide and conquer, dp, matrices	2500	x648
1808E1	Minibuses on Venus (easy version) combinatorics, divide and conquer, dp	2200	x1253
1808C	Unlucky Numbers brute force, dp, greedy, implementation	1900	x3583
1807G2	Subsequence Addition (Hard Version) bitmasks, dp, greedy, implementation, sortings	1100	x17730
1807G1	Subsequence Addition (Easy Version) brute force, data structures, dp, greedy, implementation, sortings	1100	x17873
1806D	DSU Master combinatorics, dp, dsu, math	2500	x849
1805E	There Should Be a Lot of Maximums brute force, data structures, dfs and similar, dp, trees, two pointers	2300	x1526
1805D	A Wide, Wide Graph dfs and similar, dp, graphs, greedy, trees	1800	x6053
1804H	Code Lock bitmasks, dp	3300	x169
1804E	Routing bitmasks, brute force, dfs and similar, dp, graphs	2400	x1364
1804D	Accommodation brute force, dp, greedy, implementation	2000	x4426
1801F	Another n-dimensional chocolate bar dp, math, meet-in-the-middle, number theory	2700	x546
1801D	The way home binary search, data structures, dp, graphs, greedy, shortest paths, sortings	2100	x2046
1801C	Music Festival binary search, data structures, dp, greedy, sortings	1900	x3227
1799H	Tree Cutting bitmasks, dfs and similar, dp	3200	x271
1799G	Count Voting combinatorics, dp, math	2600	x700
1799F	Halve or Subtract binary search, brute force, dp, greedy, sortings	2700	x768
1799D2	Hot Start Up (hard version) data structures, dp	2100	x2277
1799D1	Hot Start Up (easy version) dp	1900	x4088
1798F	Gifts from Grandfather Ahmed dp, math, number theory	2500	x467
1798E	Multitest Generator brute force, dp	2300	x1521
1797D	Li Hua and Tree brute force, data structures, dfs and similar, dp, implementation, trees	1900	x3701
1796E	Colored Subgraphs dfs and similar, dp, games, greedy, trees	2500	x695
1796D	Maximum Subarray data structures, dp, greedy, two pointers	2000	x3895
1795E	Explosions? binary search, data structures, dp, greedy, math	2200	x1919
1794E	Labeling the Tree with Distances data structures, dp, greedy, hashing, implementation, trees	2400	x1009
1794D	Counting Factorizations combinatorics, divide and conquer, dp, math, number theory	1900	x3350
1793E	Velepin and Marketing binary search, data structures, dp, greedy, sortings, two pointers	2600	x932
1793D	Moscow Gorillas binary search, dp, greedy, implementation, math, two pointers	1800	x5771
1792F2	Graph Coloring (hard version) brute force, combinatorics, divide and conquer, dp, fft, graphs	2900	x373
1792F1	Graph Coloring (easy version) combinatorics, dp, graphs	2700	x668
1792E	Divisors and Table brute force, dfs and similar, dp, number theory	2400	x1307
1791E	Negatives and Positives dp, greedy, sortings	1100	x25686
1789F	Serval and Brain Power bitmasks, brute force, dp, greedy, implementation, strings	2700	x518
1789E	Serval and Music Game brute force, dp, implementation, math, number theory	2500	x763
1789C	Serval and Toxel's Arrays combinatorics, dp, implementation, math	1500	x8096
1788E	Sum Over Zero data structures, dfs and similar, dp	2200	x2475
1787H	Codeforces Scoreboard binary search, data structures, dp, geometry	3300	x201
1787C	Remove the Bracket dp, greedy, math	1600	x6727
1784E	Infinite Game brute force, combinatorics, dp, games, probabilities	3100	x302
1784D	Wooden Spoon combinatorics, dp	2400	x955
1783D	Different Arrays brute force, dp, implementation	2000	x4188
1781F	Bracket Insertion combinatorics, dp, math, trees	2700	x735
1780F	Three Chairs bitmasks, brute force, combinatorics, data structures, dp, number theory, sortings	2300	x1375
1779F	Xorcerer's Stones bitmasks, constructive algorithms, dp, trees	2500	x1220
1779D	Boris and His Amazing Haircut constructive algorithms, data structures, dp, dsu, greedy, sortings	1700	x7511
1778F	Maximizing Root dfs and similar, dp, graphs, math, number theory, trees	2600	x598
1778D	Flexible String Revisit combinatorics, dp, math, probabilities	2100	x2563
1777D	Score of a Tree bitmasks, combinatorics, dfs and similar, dp, math, probabilities, trees	1900	x3220
1776M	Parmigiana With Seafood binary search, dp, greedy, trees	3000	x351
1776K	Uniform Chemistry dp, math	3200	x64
1776E	Crossing the Railways data structures, dp	3500	x62
1776B	Vittorio Plays with LEGO Bricks dp, geometry	2200	x1245
1775F	Laboratory on Pluto constructive algorithms, dp, greedy, math	2500	x742
1774G	Segment Covering brute force, combinatorics, constructive algorithms, data structures, dp, trees	3200	x366
1774E	Two Chess Pieces dfs and similar, dp, greedy, trees	1900	x3316
1774C	Ice and Fire constructive algorithms, dp, greedy	1300	x11567