Problemset - Codeforces

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Codeforces Round (Div. 2)
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Problems

#	Name
1958J	Necromancer *special problem	3200	x25
1958I	Equal Trees *special problem, graphs, meet-in-the-middle	3100	x28
1958H	Composite Spells *special problem, dp	2600	x71
1958G	Observation Towers *special problem	2400	x100
1958F	Narrow Paths *special problem, combinatorics	2000	x170
1958E	Yet Another Permutation Constructive *special problem, constructive algorithms	1900	x226
1958D	Staircase *special problem	1600	x435
1958C	Firewood *special problem	1500	x598
1958B	Clock in the Pool *special problem, math	1400	x769
1958A	1-3-5 *special problem, dp	1100	x1450
1953A	Accuracy-Preserving Summation Algorithm *special problem
1940D	Almost Certainly *special problem, constructive algorithms, data structures, sortings		x126
1940C	Burenka and Pether *special problem, data structures, dfs and similar, divide and conquer, dsu, graphs, sortings, trees		x34
1940B	Three Arrays *special problem, constructive algorithms, implementation, sortings		x181
1940A	Parallel Universes *special problem, constructive algorithms, dfs and similar, dsu, graphs		x82
1939D	Big Persimmon *special problem, dp, games		x86
1939C	More Gifts *special problem, dfs and similar, two pointers		x286
1939B	Evidence Board *special problem, constructive algorithms, dfs and similar, graphs, trees		x214
1939A	Draw Polygon Lines *special problem, constructive algorithms, dp, geometry, interactive		x21
1910J	Two Colors *special problem	2900	x48
1910I	Inverse Problem *special problem, combinatorics, dp	2700	x47
1910H	Sum of Digits of Sums *special problem, binary search, data structures	2400	x84
1910G	Pool Records *special problem, greedy	2700	x57
1910F	Build Railway Stations *special problem, greedy, trees	2000	x171
1910E	Maximum Sum Subarrays *special problem, dp	2100	x184
1910D	Remove and Add *special problem, greedy	1800	x333
1910C	Poisonous Swamp special problem, special problem, implementation, implementation	1600	x612
1910B	Security Guard *special problem, greedy	1600	x633
1910A	Username *special problem, implementation	1100	x1683
1885A	Deterministic Scheduling for Extended Reality over 5G and Beyond *special problem
1812J	Unmysterious Language *special problem, constructive algorithms, strings		x5847
1812I	Mountain Climber *special problem		x259
1812H	Expected Twist *special problem, interactive		x139
1812G	Colour Vision *special problem, implementation		x538
1812F	Factorization *special problem, number theory		x971
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
1812C	Digits *special problem		x1248
1812B	Was it Rated? special problem, special problem, *special problem, brute force, implementation		x5641
1812A	Are You a Robot? special problem, special problem, *special problem, expression parsing, strings		x13167
1769D3	Игра в Девятку III *special problem, brute force	2300	x119
1769D2	Игра в Девятку II *special problem, brute force	2200	x190
1769D1	Игра в Девятку I *special problem, brute force, dp	1800	x375
1769C2	Подкрутка II *special problem, dp	1300	x943
1769C1	Подкрутка I *special problem, brute force, dp, greedy	1200	x946
1769B2	Копирование файлов II *special problem, binary search, brute force, math	1400	x865
1769B1	Копирование файлов I *special problem, brute force, implementation, math	1000	x1330
1769A	Узкая дорога *special problem, math	800	x1923
1663H	Cross-Language Program *special problem, constructive algorithms		x1273
1663G	Six Characters *special problem, constructive algorithms, strings		x208
1663F	In Every Generation... *special problem, strings		x335
1663E	Are You Safe? *special problem, implementation		x548
1663D	Is it rated - 3 *special problem, combinatorics, dp, math		x1397
1663C	Pōja Verdon *special problem, implementation, math		x5644
1663B	Mike's Sequence *special problem, divide and conquer, implementation, math		x3373
1663A	Who Tested? *special problem, expression parsing, trees		x10440
1576A	Communication Routing Challenge *special problem
1571J	Two Railroads *special problem	3000	x40
1571I	Physical Examination *special problem, binary search, data structures	3200	x58
1571H	Laser Beams *special problem, geometry, probabilities	2900	x48
1571G	A Battle Against a Dragon *special problem, data structures, dp	2500	x75
1571F	Kotlinforces *special problem, constructive algorithms, dp	2000	x181
1571E	Fix the String *special problem, bitmasks, dp, greedy	1700	x333
1571D	Sweepstake *special problem, brute force, constructive algorithms, implementation, math	1800	x328
1571C	Rhyme *special problem, implementation	1800	x373
1571B	Epic Novel *special problem, math	1300	x697
1571A	Sequence of Comparisons *special problem	800	x1271
1533J	Pawns *special problem		x44
1533I	Excursions *special problem, constructive algorithms, dfs and similar, flows, graph matchings, graphs		x52
1533H	Submatrices *special problem, bitmasks, data structures, dp		x83
1533G	Biome Map *special problem, constructive algorithms, dfs and similar, graphs		x89
1533F	Binary String Partition *special problem, binary search, greedy		x215
1533E	Chess Team Forming *special problem, binary search, data structures, greedy		x275
1533D	String Searching *special problem, hashing		x441
1533C	Sweets *special problem, data structures, implementation		x470
1533B	Nearest Point Function *special problem, implementation		x766
1533A	Travel to Bertown *special problem, implementation, math		x1073
1532F	Prefixes and Suffixes *special problem, strings		x218
1532E	Good Array *special problem		x388
1532D	Teams Forming *special problem, sortings		x583
1532C	Uniform String *special problem, implementation		x637
1532B	Frog Jumping *special problem, math		x822
1532A	A+B (Trial Problem) *special problem		x1134
1531E3	Сортировка слиянием *special problem, binary search		x269
1531E2	Сортировка слиянием special problem, special problem, brute force		x333
1531E1	Сортировка слиянием *special problem		x358
1531D	Редактируем Зингер \| color special problem, special problem		x353
1531C	Симметричный амфитеатр *special problem, constructive algorithms, dp		x648
1531B2	Мониторинг *special problem		x767
1531B1	Мониторинг special problem, special problem		x1089
1531A	Зингер \| color *special problem, implementation		x1447
1505I	Mysterious language again, seriously? *special problem	2200	x549
1505H	L BREAK into program *special problem	2500	x497
1505G	Encoded message *special problem, implementation	2600	x298
1505F	Math *special problem, math	2200	x1485
1505E	Cakewalk *special problem, greedy, implementation, shortest paths	1800	x1741
1505D	Xenolith? Hippodrome? *special problem, number theory	1800	x756
1505C	Fibonacci Words *special problem, implementation	1400	x6339
1505B	DMCA *special problem, implementation, number theory	1600	x6059
1505A	Is it rated - 2 *special problem, implementation, interactive	900	x14180

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