Problemset - Codeforces

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Codeforces Round 941 (Div. 1)
14:47:13
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Codeforces Round 941 (Div. 2)
14:47:13
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combinatorics

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Problems

#	Name
1612G	Max Sum Array combinatorics, constructive algorithms, greedy, sortings	2500	x815
1909F2	Small Permutation Problem (Hard Version) combinatorics, dp, math	2500	x819
26C	Parquet combinatorics, constructive algorithms, greedy, implementation	2000	x820
1237F	Balanced Domino Placements combinatorics, dp	2600	x821
1905E	One-X combinatorics, dfs and similar, dp, math, trees	2400	x840
1806D	DSU Master combinatorics, dp, dsu, math	2500	x841
891E	Lust combinatorics, math, matrices	3000	x841
1034C	Region Separation combinatorics, dp, number theory, trees	2700	x844
1264D2	Beautiful Bracket Sequence (hard version) combinatorics, probabilities	2900	x846
1466G	Song of the Sirens combinatorics, divide and conquer, hashing, math, string suffix structures, strings	2600	x848
1933G	Turtle Magic: Royal Turtle Shell Pattern bitmasks, brute force, combinatorics, constructive algorithms, dfs and similar, math	2300	x851
91C	Ski Base combinatorics, dsu, graphs	2300	x854
1750F	Majority combinatorics, dp, math, strings	2700	x855
1620G	Subsequences Galore bitmasks, combinatorics, dp	2400	x855
755G	PolandBall and Many Other Balls combinatorics, divide and conquer, dp, fft, math, number theory	3200	x855
1096E	The Top Scorer combinatorics, dp, math, probabilities	2500	x859
1574E	Coloring combinatorics, constructive algorithms, implementation, math	2500	x867
140E	New Year Garland combinatorics, dp	2600	x870
1701F	Points combinatorics, data structures, implementation, math, matrices	2500	x880
1737E	Ela Goes Hiking combinatorics, dp, math, probabilities	2500	x888
1400G	Mercenaries bitmasks, brute force, combinatorics, dp, dsu, math, two pointers	2600	x892
1691F	K-Set Tree combinatorics, dfs and similar, dp, math, trees	2500	x904
1912B	Blueprint for Seating combinatorics, divide and conquer, math	2100	x908
1536F	Omkar and Akmar chinese remainder theorem, combinatorics, constructive algorithms, fft, games, geometry, math, meet-in-the-middle, string suffix structures	2600	x913
1670F	Jee, You See? bitmasks, combinatorics, dp	2400	x915
1365G	Secure Password bitmasks, combinatorics, constructive algorithms, interactive, math	2800	x916
1111D	Destroy the Colony combinatorics, dp, math	2600	x916
1842G	Tenzing and Random Operations combinatorics, dp, math, probabilities	2800	x917
1817C	Similar Polynomials combinatorics, math	2400	x918
1007B	Pave the Parallelepiped bitmasks, brute force, combinatorics, math, number theory	2400	x921
1558D	Top-Notch Insertions combinatorics, data structures	2600	x923
1408G	Clusterization Counting combinatorics, dp, dsu, fft, graphs, trees	2700	x926
285E	Positions in Permutations combinatorics, dp, math	2600	x927
1037F	Maximum Reduction combinatorics, data structures, math	2500	x929
336D	Vasily the Bear and Beautiful Strings combinatorics, math, number theory	2100	x931
659G	Fence Divercity combinatorics, dp, number theory	2300	x947
1784D	Wooden Spoon combinatorics, dp	2400	x948
407C	Curious Array brute force, combinatorics, implementation, math	2500	x951
1580B	Mathematics Curriculum brute force, combinatorics, dp, trees	2600	x965
1194F	Crossword Expert combinatorics, dp, number theory, probabilities, two pointers	2400	x965
629E	Famil Door and Roads combinatorics, data structures, dfs and similar, dp, probabilities, trees	2300	x966
886E	Maximum Element combinatorics, dp, math	2400	x972
1930E	2..3...4.... Wonderful! Wonderful! combinatorics, dp, math	2400	x974
756D	Bacterial Melee brute force, combinatorics, dp, string suffix structures	2400	x974
28C	Bath Queue combinatorics, dp, probabilities	2200	x981
1716F	Bags with Balls combinatorics, dp, math, number theory	2500	x996
768F	Barrels and boxes brute force, combinatorics, math, number theory, probabilities	2300	x998
1295F	Good Contest combinatorics, dp, probabilities	2700	x1007
1526E	Oolimry and Suffix Array combinatorics, constructive algorithms, math	2400	x1016
1065E	Side Transmutations combinatorics, strings	2300	x1017
960G	Bandit Blues combinatorics, dp, fft, math	2900	x1022
1815D	XOR Counting bitmasks, combinatorics, dp, math	2600	x1028
1641D	Two Arrays bitmasks, brute force, combinatorics, greedy, hashing, math, two pointers	2700	x1040
585E	Present for Vitalik the Philatelist combinatorics, math, number theory	2900	x1041
360C	Levko and Strings combinatorics, dp	2500	x1054
1285F	Classical? binary search, combinatorics, number theory	2900	x1061
403D	Beautiful Pairs of Numbers combinatorics, dp	2300	x1061
1868C	Travel Plan combinatorics, dp, implementation, math, trees	2400	x1063
367E	Sereja and Intervals combinatorics, dp	2700	x1063
1948F	Rare Coins combinatorics, math, probabilities	2500	x1074
1307E	Cow and Treats binary search, combinatorics, dp, greedy, implementation, math	2500	x1075
895D	String Mark combinatorics, math, strings	2100	x1086
1679E	Typical Party in Dorm bitmasks, combinatorics, dp, strings	2400	x1093
1284E	New Year and Castle Construction combinatorics, geometry, math, sortings	2500	x1094
1666F	Fancy Stack combinatorics, dp, implementation	2200	x1103
995F	Cowmpany Cowmpensation combinatorics, dp, math, trees	2700	x1119
1697E	Coloring brute force, combinatorics, constructive algorithms, dp, geometry, graphs, greedy, implementation, math	2400	x1135
1151F	Sonya and Informatics combinatorics, dp, matrices, probabilities	2300	x1139
929C	Красивая команда *special problem, combinatorics, math	1700	x1141
1585F	Non-equal Neighbours combinatorics, dp, math	2400	x1149
1556F	Sports Betting bitmasks, combinatorics, dp, graphs, math, probabilities	2500	x1158
1437F	Emotional Fishermen combinatorics, dp, math, two pointers	2600	x1162
1264D1	Beautiful Bracket Sequence (easy version) combinatorics, dp, probabilities	2600	x1170
272E	Dima and Horses combinatorics, constructive algorithms, graphs	2200	x1171
1542E1	Abnormal Permutation Pairs (easy version) combinatorics, dp, fft, math	2400	x1180
1943D1	Counting Is Fun (Easy Version) brute force, combinatorics, dp, math	2400	x1183
1495D	BFS Trees combinatorics, dfs and similar, graphs, math, shortest paths, trees	2600	x1190
690D2	The Wall (medium) combinatorics	1800	x1208
1914G2	Light Bulbs (Hard Version) combinatorics, data structures, dfs and similar, dp, graphs, hashing	2300	x1209
1097F	Alex and a TV Show bitmasks, combinatorics, number theory	2500	x1213
938E	Max History combinatorics, math	2300	x1223
660E	Different Subsets For All Tuples combinatorics, math	2300	x1226
356C	Compartments combinatorics, constructive algorithms, greedy, implementation	2100	x1229
1499F	Diameter Cuts combinatorics, dfs and similar, dp, trees	2400	x1243
1808E1	Minibuses on Venus (easy version) combinatorics, divide and conquer, dp	2200	x1245
1109D	Sasha and Interesting Fact from Graph Theory brute force, combinatorics, dp, math, trees	2400	x1264
757E	Bash Plays with Functions brute force, combinatorics, dp, number theory	2500	x1264
121C	Lucky Permutation brute force, combinatorics, number theory	1900	x1266
961G	Partitions combinatorics, math, number theory	2700	x1283
1770E	Koxia and Tree combinatorics, dfs and similar, dp, dsu, math, probabilities, trees	2400	x1291
327E	Axis Walking bitmasks, combinatorics, constructive algorithms, dp, meet-in-the-middle	2300	x1340
1608D	Dominoes combinatorics, fft, graphs, math, number theory	2400	x1346
1726E	Almost Perfect combinatorics, fft, math	2400	x1349
1174E	Ehab and the Expected GCD Problem combinatorics, dp, math, number theory	2500	x1349
1036F	Relatively Prime Powers combinatorics, math, number theory	2400	x1357
1838E	Count Supersequences combinatorics, dp, math	2500	x1359
815B	Karen and Test brute force, combinatorics, constructive algorithms, math	2200	x1361
1780F	Three Chairs bitmasks, brute force, combinatorics, data structures, dp, number theory, sortings	2300	x1368
1663D	Is it rated - 3 *special problem, combinatorics, dp, math		x1381
232B	Table bitmasks, combinatorics, dp, math	1900	x1386