Problemset - Codeforces

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Codeforces Round (Div. 2)
4 days
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Problems

#	Name
1773J	Jumbled Trees constructive algorithms, math	2900	x106
1773I	Interactive Factorial Guessing brute force, games, implementation, interactive	2500	x480
1773H	Hot and Cold binary search, interactive	2600	x358
1773G	Game of Questions bitmasks, combinatorics, dp, fft, math, probabilities	2800	x366
1773F	Football constructive algorithms	800	x4105
1773E	Easy Assembly greedy, sortings	1400	x4870
1773D	Dominoes combinatorics, flows, graph matchings, greedy	2600	x467
1773C	Cactus Meets Torus	3500	x30
1773B	BinCoin binary search, divide and conquer, hashing, implementation, probabilities, trees	2200	x770
1773A	Amazing Trick constructive algorithms, graph matchings, math, probabilities	1900	x1536
1772G	Gaining Rating binary search, greedy, implementation, math, sortings, two pointers	2200	x1349
1772F	Copy of a Copy of a Copy constructive algorithms, dfs and similar, graphs, implementation, sortings	2000	x2362
1772E	Permutation Game games	1700	x6762
1772D	Absolute Sorting constructive algorithms, math	1400	x15878
1772C	Different Differences constructive algorithms, greedy, math	1000	x23684
1772B	Matrix Rotation brute force, implementation	800	x29186
1772A	A+B? implementation	800	x47540
1771F	Hossam and Range Minimum Query binary search, bitmasks, data structures, hashing, probabilities, strings, trees	2500	x1133
1771E	Hossam and a Letter brute force, dp, implementation, two pointers	2500	x699
1771D	Hossam and (sub-)palindromic tree brute force, data structures, dfs and similar, dp, strings, trees	2100	x2759
1771C	Hossam and Trainees greedy, math, number theory	1600	x9680
1771B	Hossam and Friends binary search, constructive algorithms, dp, two pointers	1400	x14343
1771A	Hossam and Combinatorics combinatorics, math, sortings	900	x22870
1770H	Koxia, Mahiru and Winter Festival constructive algorithms	3500	x104
1770G	Koxia and Bracket divide and conquer, fft, math	3400	x158
1770F	Koxia and Sequence bitmasks, combinatorics, dp, math, number theory	3100	x667
1770E	Koxia and Tree combinatorics, dfs and similar, dp, dsu, math, probabilities, trees	2400	x1354
1770D	Koxia and Game constructive algorithms, data structures, dfs and similar, dsu, flows, games, graph matchings, graphs, implementation	2000	x3842
1770C	Koxia and Number Theory brute force, chinese remainder theorem, math, number theory	1700	x8527
1770B	Koxia and Permutation constructive algorithms	1000	x19395
1770A	Koxia and Whiteboards brute force, greedy	1000	x23496
1769D3	Игра в Девятку III *special problem, brute force	2300	x119
1769D2	Игра в Девятку II *special problem, brute force	2200	x197
1769D1	Игра в Девятку I *special problem, brute force, dp	1800	x383
1769C2	Подкрутка II *special problem, dp	1300	x965
1769C1	Подкрутка I *special problem, brute force, dp, greedy	1200	x969
1769B2	Копирование файлов II *special problem, binary search, brute force, math	1400	x876
1769B1	Копирование файлов I *special problem, brute force, implementation, math	1000	x1356
1769A	Узкая дорога *special problem, math	800	x1954
1768F	Wonderful Jump dp, greedy	2900	x840
1768E	Partial Sorting combinatorics, math, number theory	2300	x1875
1768D	Lucky Permutation constructive algorithms, dfs and similar, graphs, greedy	1800	x7148
1768C	Elemental Decompress constructive algorithms, greedy, implementation, sortings	1300	x14177
1768B	Quick Sort greedy, math	900	x23069
1768A	Greatest Convex greedy, math, number theory	800	x28875
1767F	Two Subtrees data structures, trees	3100	x274
1767E	Algebra Flash bitmasks, brute force, dp, graphs, math, meet-in-the-middle, trees	2500	x927
1767D	Playoff combinatorics, constructive algorithms, dp, greedy, math	1500	x9876
1767C	Count Binary Strings data structures, dp	2100	x2646
1767B	Block Towers data structures, greedy, sortings	800	x20338
1767A	Cut the Triangle implementation	800	x20542
1766F	MCF flows	2800	x268
1766E	Decomposition binary search, brute force, data structures, divide and conquer, dp, two pointers	2300	x1191
1766D	Lucky Chains math, number theory	1600	x8885
1766C	Hamiltonian Wall dp, implementation	1300	x13641
1766B	Notepad# implementation	1000	x21072
1766A	Extremely Round brute force, implementation	800	x26527
1765N	Number Reduction greedy	1500	x4757
1765M	Minimum LCM math, number theory	1000	x15452
1765L	Project Manager brute force, data structures, implementation	2400	x583
1765K	Torus Path greedy, math	1500	x5788
1765J	Hero to Zero graph matchings, math	2900	x197
1765I	Infinite Chess implementation, shortest paths	2800	x188
1765H	Hospital Queue binary search, graphs, greedy, implementation	2200	x1256
1765G	Guess the String constructive algorithms, interactive, probabilities	2600	x388
1765F	Chemistry Lab dp, geometry, probabilities	2200	x599
1765E	Exchange brute force, math	1000	x10050
1765D	Watch the Videos binary search, constructive algorithms, two pointers	1700	x4150
1765C	Card Guessing combinatorics, dp, probabilities	2600	x386
1765B	Broken Keyboard greedy	800	x8979
1765A	Access Levels bitmasks, dsu, flows, graph matchings	2400	x696
1764H	Doremy's Paint 2 data structures	3400	x191
1764G3	Doremy's Perfect DS Class (Hard Version) binary search, interactive	3300	x459
1764G2	Doremy's Perfect DS Class (Medium Version) binary search, interactive	3000	x529
1764G1	Doremy's Perfect DS Class (Easy Version) binary search, interactive	2900	x587
1764F	Doremy's Experimental Tree brute force, constructive algorithms, dfs and similar, dsu, sortings, trees	2500	x960
1764E	Doremy's Number Line dp, greedy, sortings	2400	x1225
1764D	Doremy's Pegging Game combinatorics, dp, math	2000	x2763
1764C	Doremy's City Construction graphs, greedy	1400	x9394
1764B	Doremy's Perfect Math Class math, number theory	900	x15845
1764A	Doremy's Paint greedy	800	x16589
1763F	Edge Queries data structures, dfs and similar, dp, dsu, graphs, trees	3000	x477
1763E	Node Pairs dp, graphs, math, number theory	2200	x1795
1763D	Valid Bitonic Permutations combinatorics, dp, implementation, math, number theory	2200	x2052
1763C	Another Array Problem brute force, constructive algorithms, greedy	2000	x6549
1763B	Incinerate binary search, brute force, data structures, implementation, math, sortings	1200	x14593
1763A	Absolute Maximization bitmasks, constructive algorithms, greedy, math	800	x15664
1762G	Unequal Adjacent Elements constructive algorithms, sortings	3100	x102
1762F	Good Pairs binary search, data structures, dp	2600	x631
1762E	Tree Sum combinatorics, math, trees	2600	x657
1762D	GCD Queries constructive algorithms, interactive, number theory	2100	x3533
1762C	Binary Strings are Fun combinatorics, math	1400	x9164
1762B	Make Array Good constructive algorithms, implementation, number theory, sortings	1100	x16935
1762A	Divide and Conquer greedy, math, number theory	800	x19047
1761G	Centroid Guess interactive, probabilities, trees	3500	x110
1761F2	Anti-median (Hard Version) combinatorics, dp, math	3500	x81
1761F1	Anti-median (Easy Version) dp, math	3100	x206
1761E	Make It Connected binary search, brute force, constructive algorithms, dsu, graphs, greedy, matrices, trees, two pointers	2400	x1834
1761D	Carry Bit combinatorics, math	2100	x2445
1761C	Set Construction constructive algorithms, dfs and similar, graphs, greedy	1400	x9573