Problemset - Codeforces

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Educational Codeforces Round 166 (Rated for Div. 2)
37:21:03
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Problems

#	Name
1975E	Chain Queries binary search, data structures, dfs and similar, implementation, trees		x1390
1975C	Chamo and Mocha's Array binary search, brute force, greedy		x9928
1974F	Cutting Game binary search, brute force, data structures, implementation, sortings, two pointers	1900	x2439
1973B	Cat, Fox and the Lonely Array binary search, bitmasks, data structures, greedy, math, two pointers	1300	x11029
1971F	Circle Perimeter binary search, brute force, dfs and similar, geometry, implementation, math	1600	x7428
1971E	Find the Car binary search, math, sortings	1500	x10535
1969E	Unique Array binary search, data structures, divide and conquer, dp, greedy	2400	x1012
1968G2	Division + LCP (hard version) binary search, brute force, data structures, dp, hashing, math, string suffix structures, strings	2200	x1482
1968G1	Division + LCP (easy version) binary search, data structures, dp, hashing, string suffix structures, strings	1900	x3344
1968F	Equal XOR Segments binary search, data structures	1800	x4257
1967D	Long Way to be Non-decreasing binary search, dfs and similar, graphs, implementation, shortest paths, two pointers	2800	x477
1967A	Permutation Counting binary search, greedy, implementation, math, sortings	1400	x9938
1957F2	Frequency Mismatch (Hard Version) binary search, data structures, dfs and similar, hashing, probabilities, trees	2700	x300
1957F1	Frequency Mismatch (Easy Version) binary search, data structures, divide and conquer, hashing, probabilities, trees	2600	x360
1956A	Nene's Game binary search, brute force, data structures, games, greedy	800	x19545
1954E	Chain Reaction binary search, data structures, dsu, greedy, implementation, math, number theory	2200	x1870
1952G	Mathematician Takeover binary search, dfs and similar, math		x940
1951I	Growing Trees binary search, constructive algorithms, flows, graphs, greedy	3200	x60
1951H	Thanos Snap binary search, dp, games, greedy, trees	3200	x209
1951B	Battle Cows binary search, data structures, greedy	1200	x12480
1949B	Charming Meals binary search, brute force, greedy, sortings	1500	x2069
1946C	Tree Cutting binary search, dp, greedy, implementation, trees	1600	x9370
1945G	Cook and Porridge binary search, constructive algorithms, data structures, implementation	2500	x644
1945E	Binary Search binary search, constructive algorithms, greedy	1700	x7124
1943E2	MEX Game 2 (Hard Version) binary search, greedy, two pointers	3300	x246
1943E1	MEX Game 2 (Easy Version) binary search, brute force, greedy	2900	x375
1942D	Learning to Paint binary search, data structures, dfs and similar, dp, greedy, implementation, sortings	2100	x2483
1941F	Rudolf and Imbalance binary search, greedy, sortings, two pointers	1800	x5295
1941E	Rudolf and k Bridges binary search, data structures, dp, two pointers	1600	x8344
1936F	Grand Finale: Circles binary search, geometry	3300	x69
1936D	Bitwise Paradox binary search, bitmasks, data structures, greedy, two pointers	3100	x426
1936B	Pinball binary search, data structures, implementation, math, two pointers	2000	x2498
1935F	Andrey's Tree binary search, constructive algorithms, data structures, dfs and similar, dsu, greedy, implementation, trees	2800	x403
1935D	Exam in MAC binary search, combinatorics, implementation, math	1800	x7439
1935C	Messenger in MAC binary search, brute force, constructive algorithms, data structures, dp, greedy, sortings	1800	x7271
1934C	Find a Mine binary search, constructive algorithms, geometry, greedy, interactive, math	1700	x6133
1933E	Turtle vs. Rabbit Race: Optimal Trainings binary search, implementation, math, ternary search	1500	x9896
1930C	Lexicographically Largest binary search, constructive algorithms, data structures, greedy, sortings	1700	x6489
1929C	Sasha and the Casino binary search, brute force, constructive algorithms, games, greedy, math	1400	x13479
1928B	Equalize binary search, greedy, sortings, two pointers	1200	x15556
1927D	Find the Different Ones! binary search, brute force, data structures, dp, dsu, greedy, two pointers	1300	x18623
1926E	Vlad and an Odd Ordering binary search, bitmasks, data structures, dp, implementation, math, number theory	1500	x10314
1923F	Shrink-Reverse binary search, brute force, greedy, hashing, implementation, string suffix structures, strings	2800	x337
1923D	Slimes binary search, constructive algorithms, data structures, greedy, two pointers	1800	x6031
1920F2	Smooth Sailing (Hard Version) binary search, data structures, dsu, geometry, graphs, trees	3000	x419
1920F1	Smooth Sailing (Easy Version) binary search, brute force, data structures, dfs and similar, dsu, graphs, shortest paths	2500	x895
1920D	Array Repetition binary search, brute force, dsu, implementation, math	1900	x5158
1918D	Blocking Elements binary search, data structures, dp, implementation, two pointers	1900	x4332
1915C	Can I Square? binary search, implementation	800	x38095
1913F	Palindromic Problem binary search, data structures, hashing, string suffix structures, strings	2800	x290
1913C	Game with Multiset binary search, bitmasks, brute force, greedy	1300	x13860
1910H	Sum of Digits of Sums *special problem, binary search, data structures	2400	x81
1907D	Jumping Through Segments binary search, constructive algorithms	1400	x12197
1906D	Spaceship Exploration binary search, geometry	2800	x89
1904C	Array Game binary search, brute force, data structures, sortings, two pointers	1400	x10875
1904B	Collecting Game binary search, dp, greedy, sortings, two pointers	1100	x13143
1903F	Babysitting 2-sat, binary search, data structures, graphs, trees	2500	x567
1903D1	Maximum And Queries (easy version) binary search, bitmasks, brute force, greedy	1700	x5172
1902D	Robot Queries binary search, data structures, dp, implementation	1900	x3723
1902B	Getting Points binary search, brute force, greedy	1100	x13444
1901F	Landscaping binary search, geometry, two pointers	2900	x144
1901D	Yet Another Monster Fight binary search, dp, greedy, implementation, math	1700	x6275
1900F	Local Deletions binary search, data structures, implementation	2800	x262
1896D	Ones and Twos binary search, data structures, divide and conquer, math, two pointers	1700	x5264
1896C	Matching Arrays binary search, constructive algorithms, greedy, sortings	1400	x8762
1895G	Two Characters, Two Colors binary search, data structures, dp, flows, greedy	3100	x176
1895E	Infinite Card Game binary search, brute force, data structures, dfs and similar, dp, dsu, games, graphs, greedy, sortings, two pointers	2300	x1467
1891D	Suspicious logarithms binary search, brute force, math	1900	x3733
1891C	Smilo and Monsters binary search, constructive algorithms, greedy, sortings, two pointers	1500	x11483
1887E	Good Colorings binary search, constructive algorithms, graphs, interactive	3100	x335
1887D	Split binary search, data structures, divide and conquer, dsu, math, trees, two pointers	2700	x827
1887C	Minimum Array binary search, brute force, constructive algorithms, data structures, greedy, hashing, two pointers	2400	x1593
1887B	Time Travel binary search, graphs, shortest paths	1900	x2715
1886B	Fear of the Dark binary search, geometry, math	1200	x15300
1884B	Haunted House binary search, greedy, math, two pointers	1100	x11789
1883G2	Dances (Hard Version) binary search, greedy, sortings, two pointers	1900	x4923
1883G1	Dances (Easy version) binary search, greedy, two pointers	1400	x9373
1881G	Anya and the Mysterious String binary search, data structures	2000	x2195
1878G	wxhtzdy ORO Tree binary search, bitmasks, brute force, data structures, dfs and similar, implementation, trees	2300	x1104
1878E	Iva & Pav binary search, bitmasks, data structures, greedy	1400	x11306
1876G	Clubstep binary search, brute force, data structures, greedy, trees	3500	x117
1876F	Indefinite Clownfish binary search, graphs	3500	x112
1873F	Money Trees binary search, greedy, math, two pointers	1300	x14067
1873E	Building an Aquarium binary search, sortings	1100	x23433
1872E	Data Structures Fan binary search, bitmasks, data structures, dp	1500	x12203
1870F	Lazy Numbers binary search, math	2900	x464
1870C	Colorful Table binary search, data structures, dp, implementation, math, two pointers	1300	x10857
1866L	Lihmuf Balling binary search, brute force, math	2400	x660
1866K	Keen Tree Calculation binary search, data structures, dp, geometry, graphs, implementation, trees	2500	x413
1866G	Grouped Carriages binary search, data structures, dp, flows, greedy	2100	x1533
1866F	Freak Joker Process binary search, data structures, sortings	3100	x121
1862G	The Great Equalizer binary search, data structures, math, sortings	2000	x2683
1862F	Magic Will Save the World binary search, bitmasks, brute force, dp	1800	x5759
1862D	Ice Cream Balls binary search, combinatorics, constructive algorithms, math	1300	x16192
1862C	Flower City Fence binary search, data structures, implementation, sortings	1100	x19806
1861F	Four Suits binary search, bitmasks, flows, greedy	3200	x148
1860B	Fancy Coins binary search, brute force, greedy, math	1200	x16172
1859D	Andrey and Escape from Capygrad binary search, data structures, dp, dsu, greedy, sortings	1800	x6595
1857F	Sum and Product binary search, data structures, math	1600	x10525
1856C	To Become Max binary search, brute force, data structures, dp	1600	x11191

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