Problemset - Codeforces

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Codeforces Round 950 (Div. 3)
39:12:18
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Problems

#	Name
1846D	Rudolph and Christmas Tree constructive algorithms, geometry, math	1200	x18497
1846A	Rudolph and Cut the Rope implementation, math	800	x31605
1845F	Swimmers in the Pool dp, fft, math, number theory	2800	x356
1845E	Boxes and Balls dp, implementation, math	2500	x1278
1845D	Rating System binary search, brute force, data structures, dp, dsu, greedy, math, two pointers	1800	x7394
1845B	Come Together geometry, implementation, math	900	x20997
1845A	Forbidden Integer constructive algorithms, implementation, math, number theory	800	x24937
1844H	Multiple of Three Cycles combinatorics, data structures, dp, dsu, math	3400	x133
1844G	Tree Weights bitmasks, constructive algorithms, data structures, dfs and similar, implementation, math, matrices, number theory, trees	3000	x654
1844F2	Min Cost Permutation (Hard Version) binary search, constructive algorithms, data structures, greedy, math, sortings	2800	x371
1844F1	Min Cost Permutation (Easy Version) brute force, constructive algorithms, greedy, math	2600	x740
1844D	Row Major constructive algorithms, greedy, math, number theory, strings	1400	x11726
1844C	Particles dp, greedy, implementation, math	1300	x14990
1844B	Permutations & Primes constructive algorithms, math	1000	x17585
1843F2	Omsk Metro (hard version) data structures, dfs and similar, divide and conquer, dp, math, trees	2300	x1488
1843F1	Omsk Metro (simple version) data structures, dfs and similar, dp, graphs, greedy, math, trees	1800	x5030
1843D	Apple Tree combinatorics, dfs and similar, dp, math, trees	1200	x17176
1843C	Sum in Binary Tree bitmasks, combinatorics, math, trees	800	x31377
1843B	Long Long greedy, math, two pointers	800	x28185
1842H	Tenzing and Random Real Numbers bitmasks, dp, graphs, math, probabilities	3000	x568
1842G	Tenzing and Random Operations combinatorics, dp, math, probabilities	2800	x942
1842E	Tenzing and Triangle data structures, dp, geometry, greedy, math	2300	x1550
1842B	Tenzing and Books bitmasks, greedy, math	1100	x15896
1842A	Tenzing and Tsondu games, math	800	x19538
1841E	Fill the Matrix data structures, greedy, math	2200	x1903
1841C	Ranom Numbers brute force, dp, greedy, math, strings	1800	x7374
1840G2	In Search of Truth (Hard Version) constructive algorithms, interactive, math, meet-in-the-middle, probabilities	2500	x906
1840G1	In Search of Truth (Easy Version) constructive algorithms, interactive, math, meet-in-the-middle, probabilities	2200	x2248
1840C	Ski Resort combinatorics, math, two pointers	1000	x25036
1840B	Binary Cafe bitmasks, combinatorics, math	1100	x21642
1839A	The Good Array greedy, implementation, math	800	x17135
1838E	Count Supersequences combinatorics, dp, math	2500	x1382
1838C	No Prime Differences constructive algorithms, math, number theory	1400	x13602
1838B	Minimize Permutation Subarrays constructive algorithms, math	1100	x15896
1838A	Blackboard List constructive algorithms, math	800	x21128
1837A	Grasshopper on a Line constructive algorithms, math	800	x29606
1836B	Astrophysicists greedy, math	1100	x12317
1835D	Doctor's Brown Hypothesis dfs and similar, graphs, math, number theory	2900	x454
1835C	Twin Clusters bitmasks, brute force, constructive algorithms, math, probabilities	2600	x946
1835B	Lottery binary search, brute force, greedy, math, two pointers	2500	x909
1835A	k-th equality brute force, implementation, math	1700	x7498
1834F	Typewriter brute force, math	2500	x492
1834E	MEX of LCM binary search, data structures, implementation, math, number theory	2300	x2087
1834C	Game with Reversing games, greedy, math, strings	1200	x12731
1834B	Maximum Strength greedy, math	1000	x14632
1834A	Unit Array greedy, math	800	x21743
1833F	Ira and Flamenco combinatorics, constructive algorithms, data structures, implementation, math, sortings, two pointers	1700	x6821
1833C	Vlad Building Beautiful Array greedy, math	800	x25605
1832D2	Red-Blue Operations (Hard Version) binary search, constructive algorithms, greedy, implementation, math	2400	x1809
1832D1	Red-Blue Operations (Easy Version) binary search, greedy, implementation, math	2100	x2814
1830E	Bully Sort data structures, math	3500	x232
1830C	Hyperregular Bracket Strings combinatorics, greedy, hashing, math, number theory, sortings	2400	x1542
1830B	The BOSS Can Count Pairs brute force, math	2000	x4631
1829H	Don't Blame Me bitmasks, combinatorics, dp, math	1700	x7168
1829G	Hits Different data structures, dp, implementation, math	1600	x9547
1829F	Forever Winter dfs and similar, graphs, math	1300	x16353
1828B	Permutation Swap math, number theory	900	x20998
1828A	Divisible Array constructive algorithms, math	800	x23102
1827A	Counting Orders combinatorics, math, sortings, two pointers	1100	x17659
1826F	Fading into Fog geometry, interactive, math, probabilities	2800	x340
1826C	Dreaming of Freedom greedy, math, number theory	1300	x12907
1826B	Lunatic Never Content math, number theory	1100	x16034
1825B	LuoTianyi and the Table greedy, math	1000	x14254
1824B2	LuoTianyi and the Floating Islands (Hard Version) combinatorics, dfs and similar, math, probabilities, trees	2300	x2509
1824B1	LuoTianyi and the Floating Islands (Easy Version) combinatorics, math, probabilities, trees	1800	x4364
1823F	Random Walk dp, graphs, math, probabilities, trees	2600	x797
1823E	Removing Graph brute force, dp, games, graphs, math	2500	x1201
1823D	Unique Palindromes constructive algorithms, math, strings	1900	x3675
1823C	Strongly Composite greedy, math, number theory	1300	x11762
1823B	Sort with Step brute force, math, sortings	900	x15417
1823A	A-characteristic combinatorics, constructive algorithms, math	800	x15857
1822G2	Magic Triples (Hard Version) brute force, data structures, math, number theory	2200	x2331
1822G1	Magic Triples (Easy Version) brute force, data structures, math, number theory	1700	x6581
1822E	Making Anti-Palindromes greedy, math, strings	1600	x9811
1822D	Super-Permutation constructive algorithms, math	1200	x16022
1822C	Bun Lover math	800	x22399
1822B	Karina and Array greedy, math, sortings	800	x24164
1821F	Timber combinatorics, dp, fft, math	2600	x714
1821D	Black Cells binary search, brute force, greedy, math	1900	x4789
1821C	Tear It Apart brute force, implementation, math, strings	1300	x13713
1821A	Matching combinatorics, math	800	x19431
1820B	JoJo's Incredible Adventures math, strings, two pointers	1100	x13560
1819E	Roads in E City interactive, math, probabilities, trees	3200	x249
1819C	The Fox and the Complete Tree Traversal constructive algorithms, dp, implementation, math, trees	2400	x1406
1817C	Similar Polynomials combinatorics, math	2400	x932
1815F	OH NO1 (-2-3-4) constructive algorithms, graphs, math	3500	x215
1815E	Bosco and Particle dp, math, number theory, strings	3100	x330
1815D	XOR Counting bitmasks, combinatorics, dp, math	2600	x1060
1815A	Ian and Array Sorting greedy, math	1300	x13550
1814D	Balancing Weapons binary search, brute force, data structures, math, two pointers	2500	x828
1814B	Long Legs brute force, math	1700	x9617
1814A	Coins implementation, math	800	x26120
1812E	Not a Geometry Problem special problem, special problem, constructive algorithms, geometry, math		x3953
1812D	Trivial Conjecture *special problem, constructive algorithms, math, number theory		x4346
1811G2	Vlad and the Nice Paths (hard version) binary search, combinatorics, data structures, dp, math, two pointers	2200	x1642
1811G1	Vlad and the Nice Paths (easy version) combinatorics, dp, math	2100	x1935
1811E	Living Sequence binary search, dp, math, number theory	1500	x11673
1811D	Umka and a Long Flight constructive algorithms, implementation, math	1600	x7107
1811B	Conveyor Belts implementation, math	1000	x19814
1811A	Insert Digit greedy, math, strings	800	x30201