Problemset - Codeforces

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Codeforces Round (Div. 2)
46:12:35
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Difficulty: —

math

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Problems

#	Name
1830B	The BOSS Can Count Pairs brute force, math	2000	x4739
1829H	Don't Blame Me bitmasks, combinatorics, dp, math	1700	x7442
1829G	Hits Different data structures, dp, implementation, math	1600	x9929
1829F	Forever Winter dfs and similar, graphs, math	1300	x16876
1828B	Permutation Swap math, number theory	900	x21823
1828A	Divisible Array constructive algorithms, math	800	x23376
1827A	Counting Orders combinatorics, math, sortings, two pointers	1100	x18243
1826F	Fading into Fog geometry, interactive, math, probabilities	2800	x346
1826C	Dreaming of Freedom greedy, math, number theory	1300	x13203
1826B	Lunatic Never Content math, number theory	1100	x16690
1825B	LuoTianyi and the Table greedy, math	1000	x14428
1824B2	LuoTianyi and the Floating Islands (Hard Version) combinatorics, dfs and similar, math, probabilities, trees	2300	x2543
1824B1	LuoTianyi and the Floating Islands (Easy Version) combinatorics, math, probabilities, trees	1800	x4445
1823F	Random Walk dp, graphs, math, probabilities, trees	2600	x827
1823E	Removing Graph brute force, dp, games, graphs, math	2500	x1209
1823D	Unique Palindromes constructive algorithms, math, strings	1900	x3747
1823C	Strongly Composite greedy, math, number theory	1300	x11997
1823B	Sort with Step brute force, math, sortings	900	x15726
1823A	A-characteristic combinatorics, constructive algorithms, math	800	x15970
1822G2	Magic Triples (Hard Version) brute force, data structures, math, number theory	2200	x2365
1822G1	Magic Triples (Easy Version) brute force, data structures, math, number theory	1700	x6834
1822E	Making Anti-Palindromes greedy, math, strings	1600	x10139
1822D	Super-Permutation constructive algorithms, math	1200	x16332
1822C	Bun Lover math	800	x22649
1822B	Karina and Array greedy, math, sortings	800	x24448
1821F	Timber combinatorics, dp, fft, math	2600	x726
1821D	Black Cells binary search, brute force, greedy, math	1900	x4874
1821C	Tear It Apart brute force, implementation, math, strings	1300	x13973
1821A	Matching combinatorics, math	800	x19610
1820B	JoJo's Incredible Adventures math, strings, two pointers	1100	x14049
1819E	Roads in E City interactive, math, probabilities, trees	3200	x275
1819C	The Fox and the Complete Tree Traversal constructive algorithms, dp, implementation, math, trees	2400	x1434
1817C	Similar Polynomials combinatorics, math	2400	x944
1815F	OH NO1 (-2-3-4) constructive algorithms, graphs, math	3500	x218
1815E	Bosco and Particle dp, math, number theory, strings	3100	x333
1815D	XOR Counting bitmasks, combinatorics, dp, math	2600	x1085
1815A	Ian and Array Sorting greedy, math	1300	x13782
1814D	Balancing Weapons binary search, brute force, data structures, math, two pointers	2500	x847
1814B	Long Legs brute force, math	1700	x9790
1814A	Coins implementation, math	800	x27037
1812E	Not a Geometry Problem special problem, special problem, constructive algorithms, geometry, math		x3975
1812D	Trivial Conjecture *special problem, constructive algorithms, math, number theory		x4363
1811G2	Vlad and the Nice Paths (hard version) binary search, combinatorics, data structures, dp, math, two pointers	2200	x1694
1811G1	Vlad and the Nice Paths (easy version) combinatorics, dp, math	2100	x2001
1811E	Living Sequence binary search, dp, math, number theory	1500	x11940
1811D	Umka and a Long Flight constructive algorithms, implementation, math	1600	x7262
1811B	Conveyor Belts implementation, math	1000	x20030
1811A	Insert Digit greedy, math, strings	800	x30574
1810H	Last Number combinatorics, math	2900	x133
1810F	M-tree data structures, math, sortings, trees	2800	x558
1810D	Climbing the Tree binary search, math	1700	x7297
1810B	Candies constructive algorithms, math, number theory	800	x17322
1809G	Prediction combinatorics, dp, math	2800	x430
1809E	Two Tanks binary search, dp, implementation, math	2400	x811
1809C	Sum on Subarrays constructive algorithms, greedy, math	1500	x12373
1809B	Points on Plane binary search, greedy, math	1000	x19408
1808E3	Minibuses on Venus (hard version) brute force, combinatorics, dp, math	2800	x430
1808B	Playing in a Casino math, sortings	1200	x15778
1806F2	GCD Master (hard version) greedy, math, sortings	2900	x285
1806F1	GCD Master (easy version) greedy, math, number theory, sortings	2900	x345
1806D	DSU Master combinatorics, dp, dsu, math	2500	x869
1806C	Sequence Master brute force, constructive algorithms, math	1600	x7431
1806A	Walking Master geometry, greedy, math	800	x23406
1805F2	Survival of the Weakest (hard version) greedy, math, sortings, two pointers	3100	x335
1805F1	Survival of the Weakest (easy version) binary search, brute force, implementation, math, sortings	2600	x857
1805C	Place for a Selfie binary search, data structures, geometry, math	1400	x12284
1804C	Pull Your Luck brute force, greedy, math, number theory	1500	x11824
1804A	Lame King greedy, math	800	x17805
1802B	Settlement of Guinea Pigs greedy, implementation, math	1000	x13120
1801F	Another n-dimensional chocolate bar dp, math, meet-in-the-middle, number theory	2700	x556
1799G	Count Voting combinatorics, dp, math	2600	x726
1799E	City Union constructive algorithms, dfs and similar, dsu, geometry, greedy, implementation, math	2300	x1174
1799B	Equalize by Divide brute force, constructive algorithms, greedy, math	1200	x11061
1799A	Recent Actions data structures, greedy, implementation, math	800	x11471
1798F	Gifts from Grandfather Ahmed dp, math, number theory	2500	x479
1798D	Shocking Arrangement constructive algorithms, greedy, math	1600	x9501
1798C	Candy Store greedy, math, number theory	1700	x7998
1797E	Li Hua and Array brute force, data structures, dsu, math, number theory, two pointers	2300	x1232
1796F	Strange Triples brute force, math, number theory	2900	x170
1796C	Maximum Set binary search, math	1600	x10115
1795E	Explosions? binary search, data structures, dp, greedy, math	2200	x1968
1795D	Triangle Coloring combinatorics, math	1600	x8827
1794D	Counting Factorizations combinatorics, divide and conquer, dp, math, number theory	1900	x3472
1794C	Scoring Subsequences binary search, greedy, math, two pointers	1300	x13135
1794B	Not Dividing constructive algorithms, greedy, math	900	x20929
1793D	Moscow Gorillas binary search, dp, greedy, implementation, math, two pointers	1800	x5949
1793B	Fedya and Array constructive algorithms, math	1100	x15558
1793A	Yet Another Promotion greedy, math	800	x17870
1792D	Fixed Prefix Permutations binary search, bitmasks, data structures, hashing, math, sortings	1700	x6055
1792C	Min Max Sort binary search, brute force, greedy, math, two pointers	1500	x13712
1792B	Stand-up Comedian greedy, math	1200	x20776
1790F	Timofey and Black-White Tree brute force, dfs and similar, divide and conquer, graphs, greedy, math, shortest paths, trees	2100	x3223
1790C	Premutation brute force, implementation, math	1000	x23433
1790B	Taisia and Dice greedy, greedy, math	800	x27033
1790A	Polycarp and the Day of Pi implementation, math, strings	800	x36376
1789E	Serval and Music Game brute force, dp, implementation, math, number theory	2500	x792
1789C	Serval and Toxel's Arrays combinatorics, dp, implementation, math	1500	x8326
1789A	Serval and Mocha's Array brute force, math, number theory	800	x17872
1788D	Moving Dots binary search, brute force, combinatorics, math, two pointers	2000	x3812
1788C	Matching Numbers constructive algorithms, greedy, math	1300	x16817