Problemset - Codeforces

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Educational Codeforces Round 173 (Rated for Div. 2)
00:38:05
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Problems

#	Name
1778F	Maximizing Root dfs and similar, dp, graphs, math, number theory, trees	2600	x682
1778E	The Tree Has Fallen! bitmasks, dfs and similar, math, trees	2500	x914
1778D	Flexible String Revisit combinatorics, dp, math, probabilities	2100	x2879
1778C	Flexible String bitmasks, brute force, strings	1600	x8478
1778B	The Forbidden Permutation greedy, math	1300	x13464
1778A	Flip Flop Sum greedy, implementation	800	x24567
1777F	Comfortably Numb bitmasks, data structures, divide and conquer, strings, trees	2400	x994
1777E	Edge Reverse binary search, dfs and similar, graphs, trees	2200	x1908
1777D	Score of a Tree bitmasks, combinatorics, dfs and similar, dp, math, probabilities, trees	1900	x3596
1777C	Quiz Master binary search, math, number theory, sortings, two pointers	1700	x8874
1777B	Emordnilap combinatorics, greedy, math	900	x17735
1777A	Everybody Likes Good Arrays! greedy, math	800	x25792
1776N	Count Permutations math	3500	x84
1776M	Parmigiana With Seafood binary search, dp, greedy, trees	3000	x379
1776L	Controllers binary search, math	1500	x6417
1776K	Uniform Chemistry dp, math	3200	x69
1776J	Italian Data Centers graphs, shortest paths	2500	x705
1776I	Spinach Pizza games, geometry, greedy, interactive	2500	x704
1776H	Beppa and SwerChat two pointers	1300	x6571
1776G	Another Wine Tasting Event combinatorics, constructive algorithms, math, strings	2100	x2105
1776F	Train Splitting constructive algorithms, graphs, greedy	1700	x3565
1776E	Crossing the Railways data structures, dp	3500	x74
1776D	Teamwork constructive algorithms, greedy, math	2800	x376
1776C	Library game games, greedy, interactive, sortings	2500	x827
1776B	Vittorio Plays with LEGO Bricks dp, geometry	2200	x1371
1776A	Walking Boy greedy	800	x7128
1775F	Laboratory on Pluto constructive algorithms, dp, greedy, math	2500	x775
1775E	The Human Equation greedy, implementation	2100	x3339
1775D	Friendly Spiders dfs and similar, graphs, math, number theory, shortest paths	1800	x6447
1775C	Interesting Sequence bitmasks, math	1600	x10793
1775B	Gardener and the Array bitmasks, constructive algorithms	1300	x14422
1775A2	Gardener and the Capybaras (hard version) constructive algorithms, greedy	900	x18941
1775A1	Gardener and the Capybaras (easy version) brute force, constructive algorithms, implementation	800	x19788
1774H	Maximum Permutation constructive algorithms	3500	x135
1774G	Segment Covering brute force, combinatorics, constructive algorithms, data structures, dp, trees	3200	x447
1774F2	Magician and Pigs (Hard Version) binary search, brute force, data structures, implementation	2700	x718
1774F1	Magician and Pigs (Easy Version) brute force, data structures, implementation	2400	x1089
1774E	Two Chess Pieces dfs and similar, dp, greedy, trees	1900	x3560
1774D	Same Count One brute force, constructive algorithms, greedy, implementation, two pointers	1600	x8073
1774C	Ice and Fire constructive algorithms, dp, greedy	1300	x12199
1774B	Coloring constructive algorithms, greedy, math	1500	x12516
1774A	Add Plus Minus Sign constructive algorithms, math	800	x22620
1773L	Lisa's Sequences dp	3500	x47
1773K	King's Puzzle constructive algorithms	1900	x1489
1773J	Jumbled Trees constructive algorithms, math	2900	x112
1773I	Interactive Factorial Guessing brute force, games, implementation, interactive	2500	x498
1773H	Hot and Cold binary search, interactive	2600	x382
1773G	Game of Questions bitmasks, combinatorics, dp, fft, math, probabilities	2800	x402
1773F	Football constructive algorithms	800	x4273
1773E	Easy Assembly greedy, sortings	1400	x5050
1773D	Dominoes combinatorics, flows, graph matchings, greedy	2600	x499
1773C	Cactus Meets Torus	3500	x32
1773B	BinCoin binary search, divide and conquer, hashing, implementation, probabilities, trees	2200	x815
1773A	Amazing Trick constructive algorithms, graph matchings, math, probabilities	1900	x1619
1772G	Gaining Rating binary search, greedy, implementation, math, sortings, two pointers	2200	x1387
1772F	Copy of a Copy of a Copy constructive algorithms, dfs and similar, graphs, implementation, sortings	2000	x2428
1772E	Permutation Game games	1700	x6893
1772D	Absolute Sorting constructive algorithms, math	1400	x16296
1772C	Different Differences constructive algorithms, greedy, math	1000	x24163
1772B	Matrix Rotation brute force, implementation	800	x29584
1772A	A+B? implementation	800	x49623
1771F	Hossam and Range Minimum Query binary search, bitmasks, data structures, hashing, probabilities, strings, trees	2500	x1206
1771E	Hossam and a Letter brute force, dp, implementation, two pointers	2500	x717
1771D	Hossam and (sub-)palindromic tree brute force, data structures, dfs and similar, dp, strings, trees	2100	x2839
1771C	Hossam and Trainees greedy, math, number theory	1600	x9920
1771B	Hossam and Friends binary search, constructive algorithms, dp, two pointers	1400	x15010
1771A	Hossam and Combinatorics combinatorics, math, sortings	900	x23258
1770H	Koxia, Mahiru and Winter Festival constructive algorithms	3500	x106
1770G	Koxia and Bracket divide and conquer, fft, math	3400	x162
1770F	Koxia and Sequence bitmasks, combinatorics, dp, math, number theory	3100	x722
1770E	Koxia and Tree combinatorics, dfs and similar, dp, dsu, math, probabilities, trees	2400	x1389
1770D	Koxia and Game constructive algorithms, data structures, dfs and similar, dsu, flows, games, graph matchings, graphs, implementation	2000	x3923
1770C	Koxia and Number Theory brute force, chinese remainder theorem, math, number theory	1700	x8722
1770B	Koxia and Permutation constructive algorithms	1000	x19598
1770A	Koxia and Whiteboards brute force, greedy	1000	x23793
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	x385
1769C2	Подкрутка II *special problem, dp	1300	x984
1769C1	Подкрутка I *special problem, brute force, dp, greedy	1200	x985
1769B2	Копирование файлов II *special problem, binary search, brute force, math	1400	x888
1769B1	Копирование файлов I *special problem, brute force, implementation, math	1000	x1390
1769A	Узкая дорога *special problem, math	800	x1991
1768F	Wonderful Jump dp, greedy	2900	x878
1768E	Partial Sorting combinatorics, math, number theory	2300	x1932
1768D	Lucky Permutation constructive algorithms, dfs and similar, graphs, greedy	1800	x7323
1768C	Elemental Decompress constructive algorithms, greedy, implementation, sortings	1300	x14406
1768B	Quick Sort greedy, math	900	x23435
1768A	Greatest Convex greedy, math, number theory	800	x29195
1767F	Two Subtrees data structures, trees	3100	x322
1767E	Algebra Flash bitmasks, brute force, dp, graphs, math, meet-in-the-middle, trees	2500	x983
1767D	Playoff combinatorics, constructive algorithms, dp, greedy, math	1500	x10101
1767C	Count Binary Strings data structures, dp	2100	x2698
1767B	Block Towers data structures, greedy, sortings	800	x20565
1767A	Cut the Triangle implementation	800	x20700
1766F	MCF flows	2800	x289
1766E	Decomposition binary search, brute force, data structures, divide and conquer, dp, two pointers	2300	x1254
1766D	Lucky Chains math, number theory	1600	x9115
1766C	Hamiltonian Wall dp, implementation	1300	x13816
1766B	Notepad# implementation	1000	x21488