Problemset - Codeforces

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Educational Codeforces Round 167 (Rated for Div. 2)
36:16:19
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Problems

#	Name
1845F	Swimmers in the Pool dp, fft, math, number theory	2800	x358
1845E	Boxes and Balls dp, implementation, math	2500	x1287
1844H	Multiple of Three Cycles combinatorics, data structures, dp, dsu, math	3400	x133
1843F2	Omsk Metro (hard version) data structures, dfs and similar, divide and conquer, dp, math, trees	2300	x1508
1842I	Tenzing and Necklace divide and conquer, dp, greedy	3500	x111
1842H	Tenzing and Random Real Numbers bitmasks, dp, graphs, math, probabilities	3000	x576
1842G	Tenzing and Random Operations combinatorics, dp, math, probabilities	2800	x956
1842E	Tenzing and Triangle data structures, dp, geometry, greedy, math	2300	x1557
1840F	Railguns brute force, dfs and similar, dp, graphs	2200	x1729
1839E	Decreasing Game constructive algorithms, dfs and similar, dp, greedy, interactive	2400	x1177
1838E	Count Supersequences combinatorics, dp, math	2500	x1392
1835E	Old Mobile combinatorics, dp, probabilities	3500	x216
1832F	Zombies binary search, dp	3200	x259
1832E	Combinatorics Problem brute force, combinatorics, dp	2200	x2087
1830F	The Third Grace data structures, dp	3200	x236
1830D	Mex Tree brute force, dp, trees	2800	x616
1827C	Palindrome Partition binary search, brute force, data structures, dp, hashing, strings	2600	x1160
1827B2	Range Sorting (Hard Version) binary search, data structures, dp, greedy	2400	x1794
1826E	Walk the Runway bitmasks, brute force, data structures, dp, graphs, implementation, sortings	2400	x1528
1824C	LuoTianyi and XOR-Tree data structures, dfs and similar, dp, dsu, greedy, trees	2500	x1271
1823F	Random Walk dp, graphs, math, probabilities, trees	2600	x803
1823E	Removing Graph brute force, dp, games, graphs, math	2500	x1206
1821F	Timber combinatorics, dp, fft, math	2600	x723
1819F	Willy-nilly, Crack, Into Release! data structures, dp	3500	x128
1819D	Misha and Apples brute force, data structures, dp, two pointers	2800	x605
1819C	The Fox and the Complete Tree Traversal constructive algorithms, dp, implementation, math, trees	2400	x1416
1815E	Bosco and Particle dp, math, number theory, strings	3100	x332
1815D	XOR Counting bitmasks, combinatorics, dp, math	2600	x1072
1814E	Chain Chips data structures, dp, matrices	2300	x1272
1811G2	Vlad and the Nice Paths (hard version) binary search, combinatorics, data structures, dp, math, two pointers	2200	x1675
1810G	The Maximum Prefix dp	3200	x649
1809G	Prediction combinatorics, dp, math	2800	x428
1809E	Two Tanks binary search, dp, implementation, math	2400	x802
1808E3	Minibuses on Venus (hard version) brute force, combinatorics, dp, math	2800	x426
1808E2	Minibuses on Venus (medium version) combinatorics, divide and conquer, dp, matrices	2500	x660
1808E1	Minibuses on Venus (easy version) combinatorics, divide and conquer, dp	2200	x1273
1806D	DSU Master combinatorics, dp, dsu, math	2500	x865
1805E	There Should Be a Lot of Maximums brute force, data structures, dfs and similar, dp, trees, two pointers	2300	x1549
1804H	Code Lock bitmasks, dp	3300	x171
1804E	Routing bitmasks, brute force, dfs and similar, dp, graphs	2400	x1379
1801F	Another n-dimensional chocolate bar dp, math, meet-in-the-middle, number theory	2700	x553
1799H	Tree Cutting bitmasks, dfs and similar, dp	3200	x275
1799G	Count Voting combinatorics, dp, math	2600	x716
1799F	Halve or Subtract binary search, brute force, dp, greedy, sortings	2700	x779
1798F	Gifts from Grandfather Ahmed dp, math, number theory	2500	x473
1798E	Multitest Generator brute force, dp	2300	x1542
1796E	Colored Subgraphs dfs and similar, dp, games, greedy, trees	2500	x717
1795E	Explosions? binary search, data structures, dp, greedy, math	2200	x1950
1794E	Labeling the Tree with Distances data structures, dp, greedy, hashing, implementation, trees	2400	x1032
1793E	Velepin and Marketing binary search, data structures, dp, greedy, sortings, two pointers	2600	x951
1792F2	Graph Coloring (hard version) brute force, combinatorics, divide and conquer, dp, fft, graphs	2900	x375
1792F1	Graph Coloring (easy version) combinatorics, dp, graphs	2700	x679
1792E	Divisors and Table brute force, dfs and similar, dp, number theory	2400	x1329
1789F	Serval and Brain Power bitmasks, brute force, dp, greedy, implementation, strings	2700	x525
1789E	Serval and Music Game brute force, dp, implementation, math, number theory	2500	x778
1788E	Sum Over Zero data structures, dfs and similar, dp	2200	x2511
1787H	Codeforces Scoreboard binary search, data structures, dp, geometry	3300	x203
1784E	Infinite Game brute force, combinatorics, dp, games, probabilities	3100	x311
1784D	Wooden Spoon combinatorics, dp	2400	x968
1781F	Bracket Insertion combinatorics, dp, math, trees	2700	x748
1780F	Three Chairs bitmasks, brute force, combinatorics, data structures, dp, number theory, sortings	2300	x1409
1779F	Xorcerer's Stones bitmasks, constructive algorithms, dp, trees	2500	x1227
1778F	Maximizing Root dfs and similar, dp, graphs, math, number theory, trees	2600	x608
1776M	Parmigiana With Seafood binary search, dp, greedy, trees	3000	x358
1776K	Uniform Chemistry dp, math	3200	x65
1776E	Crossing the Railways data structures, dp	3500	x63
1776B	Vittorio Plays with LEGO Bricks dp, geometry	2200	x1255
1775F	Laboratory on Pluto constructive algorithms, dp, greedy, math	2500	x750
1774G	Segment Covering brute force, combinatorics, constructive algorithms, data structures, dp, trees	3200	x403
1773L	Lisa's Sequences dp	3500	x30
1773G	Game of Questions bitmasks, combinatorics, dp, fft, math, probabilities	2800	x325
1771E	Hossam and a Letter brute force, dp, implementation, two pointers	2500	x668
1770F	Koxia and Sequence bitmasks, combinatorics, dp, math, number theory	3100	x626
1770E	Koxia and Tree combinatorics, dfs and similar, dp, dsu, math, probabilities, trees	2400	x1311
1768F	Wonderful Jump dp, greedy	2900	x795
1767E	Algebra Flash bitmasks, brute force, dp, graphs, math, meet-in-the-middle, trees	2500	x860
1766E	Decomposition binary search, brute force, data structures, divide and conquer, dp, two pointers	2300	x1149
1765F	Chemistry Lab dp, geometry, probabilities	2200	x589
1765C	Card Guessing combinatorics, dp, probabilities	2600	x371
1764E	Doremy's Number Line dp, greedy, sortings	2400	x1199
1763F	Edge Queries data structures, dfs and similar, dp, dsu, graphs, trees	3000	x428
1763E	Node Pairs dp, graphs, math, number theory	2200	x1731
1763D	Valid Bitonic Permutations combinatorics, dp, implementation, math, number theory	2200	x1984
1762F	Good Pairs binary search, data structures, dp	2600	x571
1761F2	Anti-median (Hard Version) combinatorics, dp, math	3500	x79
1761F1	Anti-median (Easy Version) dp, math	3100	x204
1750H	BinaryStringForces constructive algorithms, data structures, dp	3500	x74
1750G	Doping combinatorics, dp, math	3300	x231
1750F	Majority combinatorics, dp, math, strings	2700	x872
1750E	Bracket Cost binary search, data structures, divide and conquer, dp, greedy, strings	2400	x1370
1748E	Yet Another Array Counting Problem binary search, data structures, divide and conquer, dp, flows, math, trees	2300	x1760
1747E	List Generation combinatorics, dp, math	2900	x490
1746G	Olympiad Training binary search, data structures, dp, flows, geometry, implementation, sortings	3500	x91
1746E2	Joking (Hard Version) dp, interactive	3200	x378
1743G	Antifibonacci Cut bitmasks, combinatorics, constructive algorithms, data structures, dp, hashing, math	3000	x248
1743F	Intersection and Union data structures, dp, matrices, probabilities	2300	x1437
1743E	FTL binary search, dp	2400	x1498
1741G	Kirill and Company bitmasks, brute force, dfs and similar, dp, flows, graphs, shortest paths	2200	x1444
1740I	Arranging Crystal Balls data structures, divide and conquer, divide and conquer, dp, geometry, graphs, number theory	3500	x108
1740F	Conditional Mix combinatorics, dp, math	2600	x774