Problemset - Codeforces

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Codeforces Round 987 (Div. 2)
08:17:43
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Problems

#	Name
1826F	Fading into Fog geometry, interactive, math, probabilities	2800	x386
1826E	Walk the Runway bitmasks, brute force, data structures, dp, graphs, implementation, sortings	2400	x1628
1826D	Running Miles brute force, dp, greedy	1700	x10119
1824E	LuoTianyi and Cartridge data structures, trees	3500	x134
1824D	LuoTianyi and the Function data structures	3000	x497
1824C	LuoTianyi and XOR-Tree data structures, dfs and similar, dp, dsu, greedy, trees	2500	x1419
1824B2	LuoTianyi and the Floating Islands (Hard Version) combinatorics, dfs and similar, math, probabilities, trees	2300	x2701
1824B1	LuoTianyi and the Floating Islands (Easy Version) combinatorics, math, probabilities, trees	1800	x4669
1824A	LuoTianyi and the Show greedy, implementation	1400	x11391
1823F	Random Walk dp, graphs, math, probabilities, trees	2600	x896
1823E	Removing Graph brute force, dp, games, graphs, math	2500	x1259
1823D	Unique Palindromes constructive algorithms, math, strings	1900	x3871
1822G2	Magic Triples (Hard Version) brute force, data structures, math, number theory	2200	x2463
1822G1	Magic Triples (Easy Version) brute force, data structures, math, number theory	1700	x7159
1822F	Gardening Friends brute force, dfs and similar, dp, graphs, trees	1700	x6262
1822E	Making Anti-Palindromes greedy, math, strings	1600	x10586
1821F	Timber combinatorics, dp, fft, math	2600	x763
1821E	Rearrange Brackets brute force, dp, greedy, sortings, strings	2100	x2400
1821D	Black Cells binary search, brute force, greedy, math	1900	x5024
1819F	Willy-nilly, Crack, Into Release! data structures, dp	3500	x133
1819E	Roads in E City interactive, math, probabilities, trees	3200	x299
1819D	Misha and Apples brute force, data structures, dp, two pointers	2800	x675
1819C	The Fox and the Complete Tree Traversal constructive algorithms, dp, implementation, math, trees	2400	x1492
1819B	The Butcher geometry, greedy, implementation, sortings, two pointers	1900	x3625
1817F	Entangled Substrings string suffix structures, strings	3500	x213
1817E	Half-sum brute force, divide and conquer, greedy	3400	x265
1817D	Toy Machine constructive algorithms, games, implementation	2700	x785
1817C	Similar Polynomials combinatorics, math	2400	x1009
1817B	Fish Graph brute force, constructive algorithms, dfs and similar, graphs	1900	x4182
1817A	Almost Increasing Subsequence binary search, data structures, greedy	1500	x11144
1815F	OH NO1 (-2-3-4) constructive algorithms, graphs, math	3500	x241
1815E	Bosco and Particle dp, math, number theory, strings	3100	x349
1815D	XOR Counting bitmasks, combinatorics, dp, math	2600	x1190
1815C	Between constructive algorithms, dfs and similar, graphs, greedy	2200	x2000
1815B	Sum Graph brute force, constructive algorithms, graphs, implementation, interactive, shortest paths, trees	2000	x3083
1814F	Communication Towers brute force, divide and conquer, dsu	2700	x637
1814E	Chain Chips data structures, dp, matrices	2300	x1372
1814D	Balancing Weapons binary search, brute force, data structures, math, two pointers	2500	x881
1814C	Search in Parallel constructive algorithms, greedy, sortings	1500	x10955
1814B	Long Legs brute force, math	1700	x10131
1811G2	Vlad and the Nice Paths (hard version) binary search, combinatorics, data structures, dp, math, two pointers	2200	x1793
1811G1	Vlad and the Nice Paths (easy version) combinatorics, dp, math	2100	x2101
1811F	Is It Flower? dfs and similar, graphs, implementation	2100	x1859
1811E	Living Sequence binary search, dp, math, number theory	1500	x12499
1811D	Umka and a Long Flight constructive algorithms, implementation, math	1600	x7591
1810H	Last Number combinatorics, math	2900	x141
1810G	The Maximum Prefix dp	3200	x728
1810F	M-tree data structures, math, sortings, trees	2800	x577
1810E	Monsters brute force, data structures, dfs and similar, dsu, graphs, greedy	2100	x3227
1810D	Climbing the Tree binary search, math	1700	x7500
1809G	Prediction combinatorics, dp, math	2800	x449
1809F	Traveling in Berland binary search, data structures, graphs, greedy, implementation	2500	x778
1809E	Two Tanks binary search, dp, implementation, math	2400	x852
1809D	Binary String Sorting constructive algorithms, greedy	1800	x6387
1809C	Sum on Subarrays constructive algorithms, greedy, math	1500	x12949
1808E3	Minibuses on Venus (hard version) brute force, combinatorics, dp, math	2800	x447
1808E2	Minibuses on Venus (medium version) combinatorics, divide and conquer, dp, matrices	2500	x698
1808E1	Minibuses on Venus (easy version) combinatorics, divide and conquer, dp	2200	x1349
1808D	Petya, Petya, Petr, and Palindromes binary search, brute force, data structures, two pointers	2100	x2342
1808C	Unlucky Numbers brute force, dp, greedy, implementation	1900	x3851
1807F	Bouncy Ball brute force, dfs and similar, implementation	1700	x6374
1806F2	GCD Master (hard version) greedy, math, sortings	2900	x300
1806F1	GCD Master (easy version) greedy, math, number theory, sortings	2900	x360
1806E	Tree Master brute force, data structures, dfs and similar, trees	2200	x2872
1806D	DSU Master combinatorics, dp, dsu, math	2500	x939
1806C	Sequence Master brute force, constructive algorithms, math	1600	x7685
1805F2	Survival of the Weakest (hard version) greedy, math, sortings, two pointers	3100	x353
1805F1	Survival of the Weakest (easy version) binary search, brute force, implementation, math, sortings	2600	x925
1805E	There Should Be a Lot of Maximums brute force, data structures, dfs and similar, dp, trees, two pointers	2300	x1630
1805D	A Wide, Wide Graph dfs and similar, dp, graphs, greedy, trees	1800	x6735
1805C	Place for a Selfie binary search, data structures, geometry, math	1400	x12681
1804H	Code Lock bitmasks, dp	3300	x190
1804G	Flow Control data structures, dsu, implementation	3500	x207
1804F	Approximate Diameter binary search, divide and conquer, graphs, shortest paths	2700	x963
1804E	Routing bitmasks, brute force, dfs and similar, dp, graphs	2400	x1475
1804D	Accommodation brute force, dp, greedy, implementation	2000	x4686
1804C	Pull Your Luck brute force, greedy, math, number theory	1500	x12256
1801G	A task for substrings data structures, string suffix structures, strings	3400	x385
1801F	Another n-dimensional chocolate bar dp, math, meet-in-the-middle, number theory	2700	x601
1801E	Gasoline prices data structures, divide and conquer, dsu, hashing, trees	3000	x463
1801D	The way home binary search, data structures, dp, graphs, greedy, shortest paths, sortings	2100	x2273
1801C	Music Festival binary search, data structures, dp, greedy, sortings	1900	x3503
1801B	Buying gifts data structures, greedy, sortings	1800	x6369
1801A	The Very Beautiful Blanket bitmasks, constructive algorithms	1600	x8652
1800G	Symmetree dfs and similar, hashing, implementation, trees	2200	x2111
1800F	Dasha and Nightmares bitmasks, hashing, meet-in-the-middle, strings	1900	x3961
1800E2	Unforgivable Curse (hard version) brute force, constructive algorithms, dfs and similar, dsu, graphs, greedy, strings	1500	x12995
1800E1	Unforgivable Curse (easy version) brute force, constructive algorithms, dsu, graphs, greedy, strings	1400	x12981
1799H	Tree Cutting bitmasks, dfs and similar, dp	3200	x284
1799G	Count Voting combinatorics, dp, math	2600	x795
1799F	Halve or Subtract binary search, brute force, dp, greedy, sortings	2700	x850
1799E	City Union constructive algorithms, dfs and similar, dsu, geometry, greedy, implementation, math	2300	x1221
1799D2	Hot Start Up (hard version) data structures, dp	2100	x2532
1799D1	Hot Start Up (easy version) dp	1900	x4581
1799C	Double Lexicographically Minimum greedy, strings	1700	x5923
1798F	Gifts from Grandfather Ahmed dp, math, number theory	2500	x504
1798E	Multitest Generator brute force, dp	2300	x1626
1798D	Shocking Arrangement constructive algorithms, greedy, math	1600	x10165
1798C	Candy Store greedy, math, number theory	1700	x8278
1797F	Li Hua and Path data structures, dfs and similar, divide and conquer, dsu, trees	3000	x358