Problemset - Codeforces

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Codeforces Round (Div. 2)
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Problems

#	Name
1868B1	Candy Party (Easy Version) bitmasks, constructive algorithms, graphs, greedy, implementation, math	1700	x6806
1867E1	Salyg1n and Array (simple version) constructive algorithms, interactive, math	2000	x3669
1866M	Mighty Rock Tower brute force, combinatorics, dp, math, probabilities	2400	x739
1866L	Lihmuf Balling binary search, brute force, math	2400	x699
1866B	Battling with Numbers combinatorics, math, number theory	1400	x7550
1866A	Ambitious Kid math	800	x20366
1864H	Asterism Stream dp, math, matrices	3200	x277
1864E	Guess Game bitmasks, data structures, games, math, probabilities, sortings, strings, trees	2100	x2534
1864D	Matrix Cascade brute force, constructive algorithms, data structures, dp, greedy, math	1700	x6578
1864C	Divisor Chain bitmasks, constructive algorithms, math, number theory	1300	x13164
1864A	Increasing and Decreasing constructive algorithms, greedy, implementation, math	800	x20106
1863G	Swaps combinatorics, dp, graphs, math	2800	x591
1863F	Divide, XOR, and Conquer bitmasks, dp, math	2600	x1104
1863E	Speedrun brute force, dfs and similar, dp, graphs, greedy, math, sortings, two pointers	2100	x2696
1863C	MEX Repetition implementation, math	1100	x13816
1863B	Split Sort greedy, math, sortings	1100	x15046
1862G	The Great Equalizer binary search, data structures, math, sortings	2000	x2788
1862D	Ice Cream Balls binary search, combinatorics, constructive algorithms, math	1300	x16767
1861E	Non-Intersecting Subpermutations combinatorics, dp, implementation, math	2300	x1681
1861A	Prime Deletion constructive algorithms, math	800	x23639
1860F	Evaluate RBS data structures, geometry, implementation, math, sortings	2900	x268
1860B	Fancy Coins binary search, brute force, greedy, math	1200	x16622
1859E	Maximum Monogonosity brute force, dp, math	2500	x1743
1859C	Another Permutation Problem brute force, dp, greedy, math	1200	x16750
1859B	Olya and Game with Arrays constructive algorithms, greedy, math, sortings	1000	x25998
1859A	United We Stand constructive algorithms, math, number theory	800	x31115
1858C	Yet Another Permutation Problem constructive algorithms, greedy, math, number theory	1000	x22671
1858B	The Walkway brute force, dp, greedy, math, number theory	1500	x11089
1858A	Buttons games, greedy, math	800	x36719
1857F	Sum and Product binary search, data structures, math	1600	x11087
1857E	Power of Points math, sortings	1500	x12086
1857D	Strong Vertices math, sortings, trees	1300	x18825
1857B	Maximum Rounding greedy, implementation, math	1100	x22681
1857A	Array Coloring greedy, math	800	x46207
1856E2	PermuTree (hard version) bitmasks, dfs and similar, dp, fft, greedy, implementation, math, trees	2700	x1358
1856B	Good Arrays implementation, math	900	x23835
1855B	Longest Divisors Interval brute force, combinatorics, greedy, math, number theory	900	x25440
1855A	Dalton the Teacher greedy, math	800	x27658
1854E	Game Bundles brute force, constructive algorithms, dp, greedy, math	3000	x393
1854C	Expected Destruction combinatorics, dp, math, probabilities	2500	x1436
1854A2	Dual (Hard Version) constructive algorithms, math	1900	x6866
1854A1	Dual (Easy Version) constructive algorithms, math	1400	x13816
1853B	Fibonaccharsis binary search, brute force, math	1200	x17086
1853A	Desorting brute force, greedy, math	800	x30415
1852C	Ina of the Mountain data structures, dp, greedy, math	2400	x1498
1852B	Imbalanced Arrays constructive algorithms, graphs, greedy, math, sortings, two pointers	1800	x4336
1852A	Ntarsis' Set binary search, math, number theory	1800	x7858
1851F	Lisa and the Martians bitmasks, greedy, math, strings, trees	1800	x5637
1851D	Prefix Permutation Sums implementation, math	1300	x14905
1851A	Escalator Conversations brute force, constructive algorithms, math	800	x29251
1850G	The Morning Star combinatorics, data structures, geometry, implementation, math, sortings	1500	x11951
1850F	We Were Both Children brute force, implementation, math, number theory	1300	x18374
1850E	Cardboard for Pictures binary search, geometry, implementation, math	1100	x22232
1849B	Monsters greedy, math, sortings	1000	x24482
1849A	Morning Sandwich implementation, math	800	x27593
1848F	Vika and Wiki binary search, bitmasks, combinatorics, divide and conquer, dp, math	2400	x1505
1848E	Vika and Stone Skipping brute force, implementation, math, number theory	2600	x775
1848D	Vika and Bonuses binary search, brute force, math, ternary search	2200	x2575
1848C	Vika and Price Tags math, number theory	1800	x6180
1848B	Vika and the Bridge binary search, data structures, greedy, implementation, math, sortings	1200	x14337
1848A	Vika and Her Friends games, math	900	x16599
1847F	The Boss's Identity binary search, bitmasks, data structures, dfs and similar, greedy, math, sortings	2500	x873
1847E	Triangle Platinum? brute force, combinatorics, implementation, interactive, math, probabilities	2900	x322
1846E2	Rudolf and Snowflakes (hard version) binary search, brute force, implementation, math	1800	x6855
1846E1	Rudolf and Snowflakes (simple version) brute force, implementation, math	1300	x16301
1846D	Rudolph and Christmas Tree constructive algorithms, geometry, math	1200	x18994
1846A	Rudolph and Cut the Rope implementation, math	800	x32166
1845F	Swimmers in the Pool dp, fft, math, number theory	2800	x365
1845E	Boxes and Balls dp, implementation, math	2500	x1305
1845D	Rating System binary search, brute force, data structures, dp, dsu, greedy, math, two pointers	1800	x7644
1845B	Come Together geometry, implementation, math	900	x21338
1845A	Forbidden Integer constructive algorithms, implementation, math, number theory	800	x26207
1844H	Multiple of Three Cycles combinatorics, data structures, dp, dsu, math	3400	x134
1844G	Tree Weights bitmasks, constructive algorithms, data structures, dfs and similar, implementation, math, matrices, number theory, trees	3000	x694
1844F2	Min Cost Permutation (Hard Version) binary search, constructive algorithms, data structures, greedy, math, sortings	2800	x393
1844F1	Min Cost Permutation (Easy Version) brute force, constructive algorithms, greedy, math	2600	x767
1844D	Row Major constructive algorithms, greedy, math, number theory, strings	1400	x12097
1844C	Particles dp, greedy, implementation, math	1300	x15351
1844B	Permutations & Primes constructive algorithms, math	1000	x17900
1843F2	Omsk Metro (hard version) data structures, dfs and similar, divide and conquer, dp, math, trees	2300	x1557
1843F1	Omsk Metro (simple version) data structures, dfs and similar, dp, graphs, greedy, math, trees	1800	x5183
1843D	Apple Tree combinatorics, dfs and similar, dp, math, trees	1200	x17679
1843C	Sum in Binary Tree bitmasks, combinatorics, math, trees	800	x32339
1843B	Long Long greedy, math, two pointers	800	x28667
1842H	Tenzing and Random Real Numbers bitmasks, dp, graphs, math, probabilities	3000	x628
1842G	Tenzing and Random Operations combinatorics, dp, math, probabilities	2800	x983
1842E	Tenzing and Triangle data structures, dp, geometry, greedy, math	2300	x1577
1842B	Tenzing and Books bitmasks, greedy, math	1100	x16568
1842A	Tenzing and Tsondu games, math	800	x19675
1841E	Fill the Matrix data structures, greedy, math	2200	x1968
1841C	Ranom Numbers brute force, dp, greedy, math, strings	1800	x7660
1840G2	In Search of Truth (Hard Version) constructive algorithms, interactive, math, meet-in-the-middle, probabilities	2500	x930
1840G1	In Search of Truth (Easy Version) constructive algorithms, interactive, math, meet-in-the-middle, probabilities	2200	x2309
1840C	Ski Resort combinatorics, math, two pointers	1000	x26489
1840B	Binary Cafe bitmasks, combinatorics, math	1100	x22136
1839A	The Good Array greedy, implementation, math	800	x17300
1838E	Count Supersequences combinatorics, dp, math	2500	x1441
1838C	No Prime Differences constructive algorithms, math, number theory	1400	x14112
1838B	Minimize Permutation Subarrays constructive algorithms, math	1100	x16175
1838A	Blackboard List constructive algorithms, math	800	x21348