Problemset - Codeforces

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Codeforces Round #622 (Div. 2)
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Codeforces Round #623 (Div. 1, based on VK Cup 2019-2020 - Elimination Round, Engine)
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Codeforces Round #623 (Div. 2, based on VK Cup 2019-2020 - Elimination Round, Engine)
08:19:12
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Problems

#	Name
1299E	So Mean interactive, math	3400	x45
1291F	Coffee Varieties (easy version) graphs, interactive	2700	x143
1290D	Coffee Varieties (hard version) constructive algorithms, graphs, interactive	2900	x227
1292E	Rin and The Unknown Flower constructive algorithms, greedy, interactive, math	3500	x85
1286C2	Madhouse (Hard version) brute force, constructive algorithms, hashing, interactive, math	2900	x303
1286C1	Madhouse (Easy version) brute force, constructive algorithms, interactive, math	2400	x707
1270D	Strange Device constructive algorithms, interactive, math, sortings	1900	x3012
1282D	Enchanted Artifact constructive algorithms, interactive, strings	2300	x1288
1275F	Шардирование постов *special problem, binary search, interactive		x90
1267I	Intriguing Selection brute force, constructive algorithms, implementation, interactive, sortings	2700	x409
1254C	Point Ordering constructive algorithms, geometry, interactive, math	2300	x747
1207E	XOR Guessing bitmasks, interactive, math	1800	x3171
1205C	Palindromic Paths implementation, interactive	2500	x777
1201E2	Knightmare (hard) graphs, interactive, shortest paths	3000	x61
1201E1	Knightmare (easy) graphs, interactive, shortest paths	2900	x62
1179E	Alesya and Discrete Math divide and conquer, interactive	3200	x61
1174F	Ehab and the Big Finale constructive algorithms, divide and conquer, graphs, implementation, interactive, trees	2300	x708
1167B	Lost Numbers brute force, divide and conquer, interactive, math	1400	x5397
1158E	Strange device binary search, interactive, math, trees	3300	x47
1147F	Zigzag Game games, interactive	3400	x69
1147E	Rainbow Coins interactive	2900	x181
1155E	Guess the Root brute force, interactive, math	2200	x865
1146C	Tree Diameter bitmasks, graphs, interactive	1700	x2169
1153E	Serval and Snake binary search, brute force, interactive	2100	x1037
1142E	Pink Floyd graphs, interactive	3100	x118
1137D	Cooperative Game constructive algorithms, interactive, number theory	2500	x612
1129E	Legendary Tree binary search, interactive, trees	3000	x170
1117E	Decypher the String bitmasks, chinese remainder theorem, constructive algorithms, interactive, math	2200	x883
1114E	Arithmetic Progression binary search, interactive, number theory, probabilities	2100	x1744
1103B	Game with modulo binary search, constructive algorithms, interactive	2000	x2176
1100D	Dasha and Chess constructive algorithms, games, interactive	2400	x570
1091G	New Year and the Factorisation Collaboration interactive, math, number theory	3100	x100
1081F	Tricky Interactor constructive algorithms, implementation, interactive	2500	x263
1088D	Ehab and another another xor problem bitmasks, constructive algorithms, implementation, interactive	2000	x1663
1089C	Cactus Search interactive	2800	x249
1056C	Pick Heroes greedy, implementation, interactive, sortings	1700	x1651
1080F	Katya and Segments Sets data structures, interactive, sortings	2700	x320
1061F	Lost Root interactive, probabilities	2400	x353
1044B	Intersecting Subtrees dfs and similar, interactive, trees	1900	x1083
1063C	Dwarves, Hats and Extrasensory Abilities binary search, constructive algorithms, geometry, interactive	1900	x1887
1033E	Hidden Bipartite Graph binary search, constructive algorithms, dfs and similar, graphs, interactive	2700	x257
1033D	Divisors interactive, math, number theory	2000	x1453
1039B	Subway Pursuit binary search, interactive, probabilities	2100	x1462
1028G	Guess the number dp, interactive	2900	x248
1023E	Down or Right constructive algorithms, interactive, matrices	2100	x1327
1019B	The hat binary search, interactive	2200	x1219
1010B	Rocket binary search, interactive	1800	x3303
1007C	Guess two numbers binary search, interactive	2800	x174
952B	A Map of the Cat brute force, interactive	1800	x1401
916D	Jamie and To-do List data structures, interactive, trees	2600	x264
896B	Ithea Plays With Chtholly binary search, constructive algorithms, games, greedy, interactive	2000	x1346
870D	Something with XOR Queries brute force, interactive, probabilities	2100	x860
862D	Mahmoud and Ehab and the binary string binary search, divide and conquer, interactive	2000	x1113
843B	Interactive LowerBound brute force, interactive, probabilities	2000	x1449
835E	The penguin's game binary search, constructive algorithms, interactive	2400	x617
811D	Vladik and Favorite Game constructive algorithms, dfs and similar, graphs, interactive	2000	x1061
809B	Glad to see you! binary search, interactive	2200	x1035
772E	Verifying Kingdom binary search, divide and conquer, interactive, trees	3200	x64
788D	Finding lines constructive algorithms, divide and conquer, interactive	2900	x148
755C	PolandBall and Forest dfs and similar, dsu, graphs, interactive, trees	1300	x5563
750H	New Year and Snowy Grid dfs and similar, dsu, graphs, interactive	3400	x58
750F	New Year and Finding Roots constructive algorithms, implementation, interactive, trees	2700	x291
753C	Interactive Bulls and Cows (Hard) brute force, constructive algorithms, interactive	2400	x183
744B	Hongcow's Game bitmasks, divide and conquer, interactive	2000	x1326
730B	Minimum and Maximum constructive algorithms, interactive	1900	x1691
727C	Guess the Array constructive algorithms, interactive, math	1400	x2816
713B	Searching Rectangles binary search, constructive algorithms, interactive	2200	x1114
679A	Bear and Prime 100 constructive algorithms, interactive, math	1400	x6421