Problemset - Codeforces

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Codeforces Round (Div. 2)
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Problems

#	Name
2268E	Kia Kio and Tree of Life data structures, fft, math, trees	2700	x403
2267G	New LRT divide and conquer, dp, fft	2600	x298
2255F	Who Will Witness the End? fft, math, math	3100	x310
2253E	Diameter Intersections brute force, dfs and similar, fft, graphs, implementation, trees	2200	x1496
2239F	Colorful Works dp, fft, games, implementation	3500	x260
2223F	Zhily and Colorful Strings divide and conquer, fft, math	3500	x126
2206F	Minesweeper String fft, number theory	2400	x522
2203B	Beautiful Numbers bitmasks, dp, fft, greedy, math	1000	x17135
2201E	ABBA Counting fft, fft, math, number theory, strings	2900	x316
2194F2	Again Trees... (hard version) bitmasks, data structures, dfs and similar, dp, fft, trees	3000	x250
2174F	Mosaic Tree combinatorics, dp, fft, math, trees	2800	x525
2169F	Subsequence Problem combinatorics, dp, fft, math	2800	x366
2145G	Cost of Coloring combinatorics, divide and conquer, dp, fft, math	2900	x656
2138C2	Maple and Tree Beauty (Hard Version) bitmasks, brute force, dfs and similar, dp, fft, trees	2000	x3666
2122G	Tree Parking combinatorics, fft, math, trees	3300	x2443
2096H	Wonderful XOR Problem bitmasks, combinatorics, dp, fft, math	3200	x239
2095H	Blurry Vision *special problem, fft, math		x857
2077C	Binary Subsequence Value Sum combinatorics, data structures, dp, fft, math, matrices	2300	x2476
2072F	Goodbye, Banker Life 2-sat, bitmasks, combinatorics, constructive algorithms, fft, math, number theory	1700	x8847
2070F	Friends and Pizza bitmasks, divide and conquer, dp, fft	3000	x397
2048I2	Kevin and Puzzle (Hard Version) bitmasks, fft, math	3500	x82
2038F	Alternative Platforms combinatorics, data structures, fft, math, sortings	2500	x502
2025E	Card Game combinatorics, dp, fft, greedy, math	2200	x2456
2021E1	Digital Village (Easy Version) brute force, data structures, dfs and similar, dp, dsu, fft, graphs, greedy, implementation, math, trees	2300	x1999
1991H	Prime Split Game bitmasks, dp, fft, games, math, number theory	3300	x591
1988F	Heartbeat combinatorics, dp, fft, math	3000	x602
1975G	Zimpha Fan Club fft, greedy, math, strings	3000	x365
1967E1	Again Counting Arrays (Easy Version) combinatorics, dp, fft, math	3100	x485
1936E	Yet Yet Another Permutation Problem divide and conquer, fft, math	3400	x162
1909I	Short Permutation Problem combinatorics, dp, fft, math	1900	x185
1896H2	Cyclic Hamming (Hard Version) brute force, dp, fft, math, number theory	3500	x176
1896H1	Cyclic Hamming (Easy Version) brute force, divide and conquer, dp, fft, math, number theory	3400	x216
1856E2	PermuTree (hard version) bitmasks, dfs and similar, dp, fft, greedy, implementation, math, trees	2700	x1859
1845F	Swimmers in the Pool dp, fft, math, number theory	2800	x506
1821F	Timber combinatorics, dp, fft, math	2600	x1040
1792F2	Graph Coloring (hard version) brute force, combinatorics, divide and conquer, dp, fft, graphs	2900	x580
1773G	Game of Questions bitmasks, combinatorics, dp, fft, math, probabilities	2800	x572
1770G	Koxia and Bracket divide and conquer, fft, math	3400	x198
1731F	Function Sum brute force, combinatorics, dp, fft, math	2500	x937
1726E	Almost Perfect combinatorics, fft, math	2400	x1800
1709F	Multiset of Strings bitmasks, brute force, dp, fft, flows, graphs, math, meet-in-the-middle, trees	2500	x733
1704H2	Game of AI (hard version) combinatorics, fft, math	3500	x121
1704H1	Game of AI (easy version) combinatorics, constructive algorithms, dp, fft, math	3200	x401
1704G	Mio and Lucky Array constructive algorithms, fft, math, strings	3500	x186
1687F	Koishi's Unconscious Permutation fft, math	3500	x115
1671F	Permutation Counting brute force, combinatorics, dp, fft, math	2700	x525
1667E	Centroid Probabilities combinatorics, dp, fft, math	3000	x976
1654H	Three Minimums combinatorics, constructive algorithms, divide and conquer, dp, fft, math	3500	x115
1644F	Basis combinatorics, fft, math, number theory	2900	x533
1641E	Special Positions combinatorics, divide and conquer, fft, math	3300	x413
1613F	Tree Coloring combinatorics, divide and conquer, fft	2600	x928
1608D	Dominoes combinatorics, fft, graphs, math, number theory	2400	x1651
1580F	Problems for Codeforces combinatorics, fft, math	3300	x256
1575C	Cyclic Sum data structures, fft, number theory	3000	x328
1574F	Occurrences combinatorics, dfs and similar, dp, dsu, fft, graphs	2700	x826
1559E	Mocha and Stars combinatorics, dp, fft, math, number theory	2200	x2854
1553I	Stairs combinatorics, divide and conquer, dp, fft, math	3400	x394
1548C	The Three Little Pigs combinatorics, dp, fft, math	2500	x2312
1542E2	Abnormal Permutation Pairs (hard version) combinatorics, dp, fft, math	2700	x1119
1542E1	Abnormal Permutation Pairs (easy version) combinatorics, dp, fft, math	2400	x1517
1536F	Omkar and Akmar chinese remainder theorem, combinatorics, constructive algorithms, fft, games, geometry, math, meet-in-the-middle, string suffix structures	2600	x1236
1528F	AmShZ Farm combinatorics, fft, math	3300	x558
1488J	Flower Shop *special problem, data structures, fft, math	3100	x48
1487G	String Counting combinatorics, dp, fft, math	2700	x760
1479E	School Clubs dp, fft, math, number theory, probabilities	3500	x475
1477F	Nezzar and Chocolate Bars combinatorics, fft, math, probabilities	3500	x387
1473G	Tiles combinatorics, dp, fft, math	2800	x513
1450H1	Multithreading (Easy Version) combinatorics, fft, math	2900	x668
1439D	INOI Final Contests combinatorics, dp, fft	3100	x622
1438C	Engineer Artem 2-sat, chinese remainder theorem, constructive algorithms, fft, flows	2000	x12003
1408G	Clusterization Counting combinatorics, dp, dsu, fft, graphs, trees	2700	x1413
1398G	Running Competition bitmasks, fft, math, number theory	2600	x1357
1392I	Kevin and Grid fft, graphs, math	3300	x336
1349F2	Slime and Sequences (Hard Version) dp, fft, math	3500	x146
1349F1	Slime and Sequences (Easy Version) dp, fft, math	3100	x692
1342E	Placing Rooks combinatorics, fft, math	2300	x3806
1334G	Substring Search bitmasks, brute force, fft	2900	x497
1286F	Harry The Potter brute force, constructive algorithms, dp, fft, implementation, math	3100	x545
1270I	Xor on Figures constructive algorithms, fft, math	3500	x418
1257G	Divisor Set divide and conquer, fft, greedy, math, number theory	2600	x815
1251F	Red-White Fence combinatorics, fft	2500	x1110
1218E	Product Tuples divide and conquer, fft	2500	x542
1218D	Xor Spanning Tree divide and conquer, fft, graphs	2400	x634
1184A3	Heidi Learns Hashing (Hard) fft, math, number theory	3100	x177
1119H	Triple fft, math	3200	x985
1119E	Pavel and Triangles brute force, dp, fft, greedy, ternary search	1900	x5642
1103E	Radix sum fft, math, number theory	3400	x420
1096G	Lucky Tickets divide and conquer, dp, fft	2400	x2187
1054H	Epic Convolution chinese remainder theorem, fft, math, number theory	3500	x336
1036E	Covered Points fft, geometry, number theory	2400	x1813
1033F	Boolean Computer bitmasks, brute force, fft, math	2800	x522
1010F	Tree fft, graphs, trees	3400	x574
993E	Nikita and Order Statistics chinese remainder theorem, fft, math	2300	x1970
986D	Perfect Encoding fft, math	3100	x400
981H	K Paths combinatorics, data structures, dp, fft, math	3100	x502
960G	Bandit Blues combinatorics, dp, fft, math	2900	x1305
958F3	Lightsabers (hard) fft	2600	x1025
954I	Yet Another String Matching Problem fft, math	2200	x1459
923E	Perpetual Subtraction fft, math, matrices	3100	x647
914G	Sum the Fibonacci bitmasks, divide and conquer, dp, fft, math	2600	x1289

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