Problemset - Codeforces

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Codeforces Round (Div. 2)
8 days

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Problems

#	Name
1854A1	Dual (Easy Version) constructive algorithms, math	1400	x15929
1853B	Fibonaccharsis binary search, brute force, math	1200	x19816
1853A	Desorting brute force, greedy, math	800	x57230
1852F	Panda Meetups data structures, dp, flows	3500	x147
1852E	Rivalries constructive algorithms, data structures, greedy	3400	x227
1852D	Miriany and Matchstick constructive algorithms, dp, greedy	2800	x606
1852C	Ina of the Mountain data structures, dp, greedy, math	2400	x2105
1852B	Imbalanced Arrays constructive algorithms, graphs, greedy, math, sortings, two pointers	1800	x5481
1852A	Ntarsis' Set binary search, math, number theory	1800	x9272
1851G	Vlad and the Mountains binary search, data structures, dsu, graphs, implementation, sortings, trees, two pointers	2000	x4076
1851F	Lisa and the Martians bitmasks, greedy, math, strings, trees	1800	x7608
1851E	Nastya and Potions dfs and similar, dp, graphs, sortings	1500	x13362
1851D	Prefix Permutation Sums implementation, math	1300	x17374
1851C	Tiles Comeback greedy	1000	x25949
1851B	Parity Sort greedy, sortings, two pointers	800	x32553
1851A	Escalator Conversations brute force, constructive algorithms, math	800	x31574
1850H	The Third Letter dfs and similar, dsu, graphs, greedy, implementation	1700	x10047
1850G	The Morning Star combinatorics, data structures, geometry, implementation, math, sortings	1500	x15556
1850F	We Were Both Children brute force, implementation, math, number theory	1300	x24795
1850E	Cardboard for Pictures binary search, geometry, implementation, math	1100	x35561
1850D	Balanced Round brute force, greedy, implementation, sortings	900	x61868
1850C	Word on the Paper implementation, strings	800	x53852
1850B	Ten Words of Wisdom implementation, sortings	800	x50603
1850A	To My Critics implementation, sortings	800	x74621
1849F	XOR Partition binary search, bitmasks, data structures, divide and conquer, greedy, trees	2700	x887
1849E	Max to the Right of Min binary search, data structures, divide and conquer, dp, dsu, two pointers	2300	x2202
1849D	Array Painting constructive algorithms, greedy, two pointers	1700	x10363
1849C	Binary String Copying binary search, brute force, data structures, hashing, strings	1600	x12577
1849B	Monsters greedy, math, sortings	1000	x45206
1849A	Morning Sandwich implementation, math	800	x32183
1848F	Vika and Wiki binary search, bitmasks, combinatorics, divide and conquer, dp, math	2400	x2051
1848E	Vika and Stone Skipping brute force, implementation, math, number theory	2600	x933
1848D	Vika and Bonuses binary search, brute force, math, ternary search	2200	x2985
1848C	Vika and Price Tags math, number theory	1800	x7197
1848B	Vika and the Bridge binary search, data structures, greedy, implementation, math, sortings	1200	x24909
1848A	Vika and Her Friends games, math	900	x18441
1847F	The Boss's Identity binary search, bitmasks, data structures, dfs and similar, greedy, math, sortings	2500	x1033
1847E	Triangle Platinum? brute force, combinatorics, implementation, interactive, math, probabilities	2900	x373
1847D	Professor Higashikata data structures, dsu, greedy, implementation, strings	1900	x4277
1847C	Vampiric Powers, anyone? bitmasks, brute force, dp, greedy	1400	x14823
1847B	Hamon Odyssey bitmasks, greedy, two pointers	1000	x22348
1847A	The Man who became a God greedy, sortings	800	x22923
1846G	Rudolf and CodeVid-23 bitmasks, dp, graphs, greedy, shortest paths	1900	x5740
1846F	Rudolph and Mimic constructive algorithms, implementation, interactive	1800	x3740
1846E2	Rudolf and Snowflakes (hard version) binary search, brute force, implementation, math	1800	x8579
1846E1	Rudolf and Snowflakes (simple version) brute force, implementation, math	1300	x25604
1846D	Rudolph and Christmas Tree constructive algorithms, geometry, math	1200	x22577
1846C	Rudolf and the Another Competition constructive algorithms, data structures, dp, greedy, sortings	1200	x21555
1846B	Rudolph and Tic-Tac-Toe brute force, implementation, strings	800	x28980
1846A	Rudolph and Cut the Rope implementation, math	800	x34848
1845F	Swimmers in the Pool dp, fft, math, number theory	2800	x436
1845E	Boxes and Balls dp, implementation, math	2500	x1615
1845D	Rating System binary search, brute force, data structures, dp, dsu, greedy, math, two pointers	1800	x9059
1845C	Strong Password binary search, dp, greedy, strings	1400	x16861
1845B	Come Together geometry, implementation, math	900	x23776
1845A	Forbidden Integer constructive algorithms, implementation, math, number theory	800	x48653
1844H	Multiple of Three Cycles combinatorics, data structures, dp, dsu, math	3400	x294
1844G	Tree Weights bitmasks, constructive algorithms, data structures, dfs and similar, implementation, math, matrices, number theory, trees	3000	x1190
1844F2	Min Cost Permutation (Hard Version) binary search, constructive algorithms, data structures, greedy, math, sortings	2800	x485
1844F1	Min Cost Permutation (Easy Version) brute force, constructive algorithms, greedy, math	2600	x914
1844E	Great Grids 2-sat, constructive algorithms, dfs and similar, dsu, graphs	2400	x2167
1844D	Row Major constructive algorithms, greedy, math, number theory, strings	1400	x13882
1844C	Particles dp, greedy, implementation, math	1300	x17923
1844B	Permutations & Primes constructive algorithms, math	1000	x20300
1844A	Subtraction Game constructive algorithms, games	800	x25989
1843F2	Omsk Metro (hard version) data structures, dfs and similar, divide and conquer, dp, math, trees	2300	x2142
1843F1	Omsk Metro (simple version) data structures, dfs and similar, dp, graphs, greedy, math, trees	1800	x6383
1843E	Tracking Segments binary search, brute force, data structures, two pointers	1600	x18066
1843D	Apple Tree combinatorics, dfs and similar, dp, math, trees	1200	x21814
1843C	Sum in Binary Tree bitmasks, combinatorics, math, trees	800	x39721
1843B	Long Long greedy, math, two pointers	800	x32218
1843A	Sasha and Array Coloring greedy, sortings, two pointers	800	x37417
1842I	Tenzing and Necklace divide and conquer, dp, greedy	3500	x170
1842H	Tenzing and Random Real Numbers bitmasks, dp, graphs, math, probabilities	3000	x859
1842G	Tenzing and Random Operations combinatorics, dp, math, probabilities	2800	x1608
1842F	Tenzing and Tree dfs and similar, greedy, shortest paths, sortings, trees	2500	x1824
1842E	Tenzing and Triangle data structures, dp, geometry, greedy, math	2300	x1841
1842D	Tenzing and His Animal Friends constructive algorithms, graphs, greedy	1900	x4765
1842C	Tenzing and Balls dp	1500	x16594
1842B	Tenzing and Books bitmasks, greedy, math	1100	x26027
1842A	Tenzing and Tsondu games, math	800	x20825
1841F	Monocarp and a Strategic Game geometry, sortings, two pointers	2700	x609
1841E	Fill the Matrix data structures, greedy, math	2200	x2437
1841D	Pairs of Segments data structures, greedy, sortings, two pointers	2000	x5304
1841C	Ranom Numbers brute force, dp, greedy, math, strings	1800	x9105
1841B	Keep it Beautiful implementation	1000	x24153
1841A	Game with Board constructive algorithms, games	800	x26021
1840G2	In Search of Truth (Hard Version) constructive algorithms, interactive, math, meet-in-the-middle, probabilities	2500	x1192
1840G1	In Search of Truth (Easy Version) constructive algorithms, interactive, math, meet-in-the-middle, probabilities	2200	x2809
1840F	Railguns brute force, dfs and similar, dp, graphs	2200	x2126
1840E	Character Blocking data structures, hashing, implementation	1600	x9342
1840D	Wooden Toy Festival binary search, greedy, sortings	1400	x16378
1840C	Ski Resort combinatorics, math, two pointers	1000	x48522
1840B	Binary Cafe bitmasks, combinatorics, math	1100	x24781
1840A	Cipher Shifer implementation, strings, two pointers	800	x38315
1839E	Decreasing Game constructive algorithms, dfs and similar, dp, greedy, interactive	2400	x1548
1839D	Ball Sorting data structures, dp, sortings	2100	x2713
1839C	Insert Zero and Invert Prefix constructive algorithms	1300	x13474
1839B	Lamps greedy, sortings	1100	x16584
1839A	The Good Array greedy, implementation, math	800	x18345

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