Problemset - Codeforces

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Codeforces Round (Div. 2)
6 days

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Problems

#	Name
2218G	The 67th Iteration of "Counting is Fun" implementation, math	1800	x3960
2218F	The 67th Tree Problem constructive algorithms, implementation, trees	1500	x7954
2218E	The 67th XOR Problem binary search, bitmasks, brute force	1200	x15214
2218D	The 67th OEIS Problem constructive algorithms, greedy, greedy, greedy, math, math, number theory	1100	x19488
2218C	The 67th Permutation Problem constructive algorithms, greedy, math	800	x28096
2218B	The 67th 6-7 Integer Problem greedy, math	800	x35924
2218A	The 67th Integer Problem brute force, games, implementation, math	800	x37292
2217H	Closer dfs and similar, dp, trees	2800	x235
2217G	Down the Pivot combinatorics, dp, math, trees	2600	x393
2217F	Interval Game bitmasks, combinatorics, constructive algorithms, dp, games, games, greedy, greedy, math, probabilities	2300	x779
2217E	Definitely Larger binary search, constructive algorithms, data structures, graphs, greedy, sortings	2000	x2235
2217D	Flip the Bit (Hard Version) greedy, implementation, math	1900	x3512
2217C	Grid Covering chinese remainder theorem, math, number theory	1300	x11034
2217B	Flip the Bit (Easy Version) greedy, implementation	1000	x17009
2217A	The Equalizer math	800	x23197
2216B	THU Packing Puzzle greedy	1300	x4221
2216A	Course Wishes greedy	900	x5044
2215G	Maze trees	3500	x62
2215F	Research games	3500	x59
2215E	Star Map constructive algorithms, data structures, geometry, greedy, sortings	2700	x187
2215D	EXPloration, EXPloitation, and Gain Some EXPerience! bitmasks, brute force, dp, greedy, implementation	2800	x126
2215C	Oriented Journey bitmasks, brute force, communication, constructive algorithms, graphs, interactive, trees	2200	x693
2215B	RReeppeettiittiioonn binary search, brute force, implementation, math, number theory	2000	x1135
2215A	Interval Mod constructive algorithms, dp, greedy, math	1700	x3009
2211H	Median Deletion	3500	x109
2211G	Rational Bubble Sort constructive algorithms, geometry, greedy	2900	x298
2211F	Learning Binary Search combinatorics, divide and conquer, dp, math	2400	x954
2211E	Minimum Path Cover brute force, dp, greedy, interactive, interactive, math, number theory, trees	2500	x892
2211D	AND-array bitmasks, combinatorics, math	1900	x3022
2211C2	Equal Multisets (Hard Version) constructive algorithms, dsu, greedy	1800	x3836
2211C1	Equal Multisets (Easy Version) binary search, brute force, greedy, two pointers	1300	x9583
2211B	Mickey Mouse Constructive constructive algorithms, dp, greedy, math	1100	x12116
2211A	Antimedian Deletion implementation, math	800	x16720
2210F	A Simple Problem binary search, data structures, greedy, math, trees	2700	x235
2210E	Binary Strings are Simple? constructive algorithms, implementation, interactive, number theory	2700	x340
2210D	A Simple RBS Problem constructive algorithms, math, strings, trees	2100	x2113
2210C2	A Simple GCD Problem (Hard Version) dp, greedy, number theory	2100	x2240
2210C1	A Simple GCD Problem (Easy Version) greedy, number theory	1200	x13430
2210B	Simply Sitting on Chairs data structures, greedy	900	x18249
2210A	A Simple Sequence constructive algorithms, dp, greedy, number theory	800	x23192
2209F	Dynamic Values And Maximum Sum data structures, data structures, greedy, implementation, trees	2700	x435
2209E	A Trivial String Problem brute force, dp, hashing, string suffix structures, strings	2200	x1861
2209D	Ghostfires constructive algorithms, greedy	1800	x5508
2209C	Find the Zero constructive algorithms, interactive	1400	x11083
2209B	Array greedy	900	x20059
2209A	Flip Flops greedy	800	x22176
2208E	Counting Cute Arrays combinatorics, dp	2700	x446
2208D2	Tree Orientation (Hard Version) dfs and similar, dsu, graphs, greedy, sortings, trees	2200	x1913
2208D1	Tree Orientation (Easy Version) constructive algorithms, dfs and similar, dsu, graphs, greedy, matrices, trees	1800	x4388
2208C	Stamina and Tasks dp, greedy, math	1300	x11558
2208B	Cyclists brute force, games, greedy, implementation, math, sortings	1100	x14129
2208A	Bingo Candies constructive algorithms, math	800	x20819
2207G	Toothless constructive algorithms, dfs and similar, dsu	3300	x161
2207F	Hanabi binary search, data structures, dp, dsu, flows, graph matchings, graphs, greedy	2900	x278
2207E2	N-MEX (Counting Version) combinatorics, constructive algorithms, math	2400	x892
2207E1	N-MEX (Constructive Version) constructive algorithms, greedy	2100	x1698
2207D	Boxed Like a Fish dfs and similar, dp, games, shortest paths, trees	2200	x2156
2207C	Where's My Water? data structures, divide and conquer, dp, math	1600	x5769
2207B	One Night At Freddy's games, greedy, sortings	1600	x6072
2207A	1-1 greedy, strings	800	x14080
2206M	Deformed Balance	2900	x50
2206L	Onion	3500	x47
2206K	Time Display Stickers binary search	1300	x1647
2206J	Worldwide Playlist math	1700	x1141
2206I	Growth Factor combinatorics, dp, math, number theory	2900	x176
2206H	Reflect Sort number theory	1800	x939
2206G	Extra Transition graphs	3100	x96
2206F	Minesweeper String fft, number theory	2400	x437
2206E	Parallel Sums data structures, geometry	2500	x437
2206D	Christmas Tree Un-decoration data structures, dp, trees	2600	x288
2206C	Upside Down Dijkstra dfs and similar	2200	x685
2206B	Subtree Removal Game binary search, games, trees	2500	x393
2206A	Compare Suffixes interactive	3500	x115
2205G	Simons and Diophantus Equation bitmasks, brute force, data structures, math, number theory	3000	x208
2205F	Simons and Reconstructing His Roads constructive algorithms, constructive algorithms, constructive algorithms, constructive algorithms, data structures, data structures, dsu, graphs	2400	x667
2205E	Simons and Dividing the Rhythm combinatorics, data structures, dp, dsu, math, string suffix structures, strings, strings, strings	2100	x1615
2205D	Simons and Beating Peaks data structures, data structures, divide and conquer, dp, dp, greedy, implementation, trees	1700	x5118
2205C	Simons and Posting Blogs greedy, greedy, greedy, sortings	1500	x8057
2205B	Simons and Cakes for Success implementation, math, math	800	x16586
2205A	Simons and Making It Beautiful brute force, constructive algorithms, constructive algorithms, constructive algorithms, constructive algorithms, constructive algorithms, constructive algorithms	800	x17700
2204G	Grid Path dp, dp, graphs, matrices	2700	x420
2204F	Sum of Fractions binary search, brute force, combinatorics, data structures, greedy, math, number theory, two pointers	2200	x1268
2204E	Sum of Digits (and Again) brute force, constructive algorithms, math	1800	x4917
2204D	Alternating Path constructive algorithms, dfs and similar, graph matchings, graphs, graphs, graphs, graphs	1400	x9247
2204C	Spring math, math, math, math, math, number theory	1000	x18110
2204B	Right Maximum greedy	800	x20053
2204A	Passing the Ball brute force, implementation	800	x22239
2203F	Binary Search with One Swap binary search, divide and conquer, dp, hashing, math, two pointers	2600	x427
2203E	Probabilistic Card Game binary search, data structures, games, greedy, math, ternary search	2200	x1455
2203D	Divisibility Game brute force, games, games, games, greedy, number theory, number theory	1700	x5618
2203C	Test Generator binary search, bitmasks, greedy, math	1500	x7338
2203B	Beautiful Numbers bitmasks, dp, fft, greedy, math	1000	x14879
2203A	Towers of Boxes math	800	x18504
2202G1	Monotone Monochrome Matrices (Easy Version) data structures, data structures, data structures, data structures	2500	x289
2202B	ABAB Construction dp, greedy, greedy, greedy, implementation	1200	x11487
2202A	Parkour Design math, math, math, math	800	x16667
2201G	Codeforces Heuristic Contest 1001 constructive algorithms	3500	x68
2201F2	Monotone Monochrome Matrices (Hard Version) constructive algorithms, data structures, hashing, math	2800	x405
2201F1	Monotone Monochrome Matrices (Medium Version) data structures, hashing	2900	x276
2201E	ABBA Counting fft, fft, math, number theory, strings	2900	x283

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