Problemset - Codeforces

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Codeforces Round (Div. 2)
6 days

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Problems

#	Name
1773H	Hot and Cold binary search, interactive	2600	x349
1773G	Game of Questions bitmasks, combinatorics, dp, fft, math, probabilities	2800	x325
1773F	Football constructive algorithms	800	x4008
1773E	Easy Assembly greedy, sortings	1400	x4741
1773D	Dominoes combinatorics, flows, graph matchings, greedy	2600	x440
1773C	Cactus Meets Torus	3500	x30
1773B	BinCoin binary search, divide and conquer, hashing, implementation, probabilities, trees	2200	x742
1773A	Amazing Trick constructive algorithms, graph matchings, math, probabilities	1900	x1499
1772G	Gaining Rating binary search, greedy, implementation, math, sortings, two pointers	2200	x1294
1772F	Copy of a Copy of a Copy constructive algorithms, dfs and similar, graphs, implementation, sortings	2000	x2276
1772E	Permutation Game games	1700	x6552
1772D	Absolute Sorting constructive algorithms, math	1400	x15324
1772C	Different Differences constructive algorithms, greedy, math	1000	x23012
1772B	Matrix Rotation brute force, implementation	800	x28557
1772A	A+B? implementation	800	x45333
1771F	Hossam and Range Minimum Query binary search, bitmasks, data structures, hashing, probabilities, strings, trees	2500	x999
1771E	Hossam and a Letter brute force, dp, implementation, two pointers	2500	x669
1771D	Hossam and (sub-)palindromic tree brute force, data structures, dfs and similar, dp, strings, trees	2100	x2642
1771C	Hossam and Trainees greedy, math, number theory	1600	x9300
1771B	Hossam and Friends binary search, constructive algorithms, dp, two pointers	1400	x13465
1771A	Hossam and Combinatorics combinatorics, math, sortings	900	x22390
1770H	Koxia, Mahiru and Winter Festival constructive algorithms	3500	x100
1770G	Koxia and Bracket divide and conquer, fft, math	3400	x158
1770F	Koxia and Sequence bitmasks, combinatorics, dp, math, number theory	3100	x630
1770E	Koxia and Tree combinatorics, dfs and similar, dp, dsu, math, probabilities, trees	2400	x1313
1770D	Koxia and Game constructive algorithms, data structures, dfs and similar, dsu, flows, games, graph matchings, graphs, implementation	2000	x3720
1770C	Koxia and Number Theory brute force, chinese remainder theorem, math, number theory	1700	x8389
1770B	Koxia and Permutation constructive algorithms	1000	x19155
1770A	Koxia and Whiteboards brute force, greedy	1000	x23104
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	x372
1769C2	Подкрутка II *special problem, dp	1300	x930
1769C1	Подкрутка I *special problem, brute force, dp, greedy	1200	x941
1769B2	Копирование файлов II *special problem, binary search, brute force, math	1400	x859
1769B1	Копирование файлов I *special problem, brute force, implementation, math	1000	x1324
1769A	Узкая дорога *special problem, math	800	x1917
1768F	Wonderful Jump dp, greedy	2900	x797
1768E	Partial Sorting combinatorics, math, number theory	2300	x1807
1768D	Lucky Permutation constructive algorithms, dfs and similar, graphs, greedy	1800	x6843
1768C	Elemental Decompress constructive algorithms, greedy, implementation, sortings	1300	x13749
1768B	Quick Sort greedy, math	900	x22451
1768A	Greatest Convex greedy, math, number theory	800	x28316
1767F	Two Subtrees data structures, trees	3100	x257
1767E	Algebra Flash bitmasks, brute force, dp, graphs, math, meet-in-the-middle, trees	2500	x863
1767D	Playoff combinatorics, constructive algorithms, dp, greedy, math	1500	x9617
1767C	Count Binary Strings data structures, dp	2100	x2562
1767B	Block Towers data structures, greedy, sortings	800	x19999
1767A	Cut the Triangle implementation	800	x20292
1766F	MCF flows	2800	x263
1766E	Decomposition binary search, brute force, data structures, divide and conquer, dp, two pointers	2300	x1151
1766D	Lucky Chains math, number theory	1600	x8623
1766C	Hamiltonian Wall dp, implementation	1300	x13301
1766B	Notepad# implementation	1000	x20558
1766A	Extremely Round brute force, implementation	800	x24822
1765N	Number Reduction greedy	1500	x4584
1765M	Minimum LCM math, number theory	1000	x13638
1765L	Project Manager brute force, data structures, implementation	2400	x569
1765K	Torus Path greedy, math	1500	x5533
1765J	Hero to Zero graph matchings, math	2900	x188
1765I	Infinite Chess implementation, shortest paths	2800	x183
1765H	Hospital Queue binary search, graphs, greedy, implementation	2200	x1203
1765G	Guess the String constructive algorithms, interactive, probabilities	2600	x371
1765F	Chemistry Lab dp, geometry, probabilities	2200	x589
1765E	Exchange brute force, math	1000	x9752
1765D	Watch the Videos binary search, constructive algorithms, two pointers	1700	x4006
1765C	Card Guessing combinatorics, dp, probabilities	2600	x371
1765B	Broken Keyboard greedy	800	x8825
1765A	Access Levels bitmasks, dsu, flows, graph matchings	2400	x671
1764H	Doremy's Paint 2 data structures	3400	x174
1764G3	Doremy's Perfect DS Class (Hard Version) binary search, interactive	3300	x440
1764G2	Doremy's Perfect DS Class (Medium Version) binary search, interactive	3000	x507
1764G1	Doremy's Perfect DS Class (Easy Version) binary search, interactive	2900	x560
1764F	Doremy's Experimental Tree brute force, constructive algorithms, dfs and similar, dsu, sortings, trees	2500	x934
1764E	Doremy's Number Line dp, greedy, sortings	2400	x1200
1764D	Doremy's Pegging Game combinatorics, dp, math	2000	x2687
1764C	Doremy's City Construction graphs, greedy	1400	x9212
1764B	Doremy's Perfect Math Class math, number theory	900	x15598
1764A	Doremy's Paint greedy	800	x16466
1763F	Edge Queries data structures, dfs and similar, dp, dsu, graphs, trees	3000	x430
1763E	Node Pairs dp, graphs, math, number theory	2200	x1734
1763D	Valid Bitonic Permutations combinatorics, dp, implementation, math, number theory	2200	x1986
1763C	Another Array Problem brute force, constructive algorithms, greedy	2000	x6385
1763B	Incinerate binary search, brute force, data structures, implementation, math, sortings	1200	x14276
1763A	Absolute Maximization bitmasks, constructive algorithms, greedy, math	800	x15484
1762G	Unequal Adjacent Elements constructive algorithms, sortings	3100	x101
1762F	Good Pairs binary search, data structures, dp	2600	x572
1762E	Tree Sum combinatorics, math, trees	2600	x617
1762D	GCD Queries constructive algorithms, interactive, number theory	2100	x3353
1762C	Binary Strings are Fun combinatorics, math	1400	x8977
1762B	Make Array Good constructive algorithms, implementation, number theory, sortings	1100	x16568
1762A	Divide and Conquer greedy, math, number theory	800	x18767
1761G	Centroid Guess interactive, probabilities, trees	3500	x101
1761F2	Anti-median (Hard Version) combinatorics, dp, math	3500	x79
1761F1	Anti-median (Easy Version) dp, math	3100	x204
1761E	Make It Connected binary search, brute force, constructive algorithms, dsu, graphs, greedy, matrices, trees, two pointers	2400	x1757
1761D	Carry Bit combinatorics, math	2100	x2379
1761C	Set Construction constructive algorithms, dfs and similar, graphs, greedy	1400	x9298
1761B	Elimination of a Ring constructive algorithms, greedy, implementation	1000	x13162
1761A	Two Permutations brute force, constructive algorithms	800	x18089