Problemset - Codeforces

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Codeforces Round 945 (Div. 2)
3 days
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Problems

#	Name
1971F	Circle Perimeter binary search, brute force, dfs and similar, geometry, implementation, math	1600	x5497
1971E	Find the Car binary search, math, sortings	1500	x8027
1969E	Unique Array binary search, data structures, divide and conquer, dp, greedy	2400	x908
1968G2	Division + LCP (hard version) binary search, brute force, data structures, dp, hashing, math, string suffix structures, strings	2200	x1329
1968G1	Division + LCP (easy version) binary search, data structures, dp, hashing, string suffix structures, strings	1900	x3002
1968F	Equal XOR Segments binary search, data structures	1800	x3717
1967D	Long Way to be Non-decreasing binary search, dfs and similar, graphs, implementation, shortest paths, two pointers	2800	x416
1967A	Permutation Counting binary search, greedy, implementation, math, sortings	1400	x8885
1957F2	Frequency Mismatch (Hard Version) binary search, data structures, dfs and similar, hashing, probabilities, trees	2700	x280
1957F1	Frequency Mismatch (Easy Version) binary search, data structures, divide and conquer, hashing, probabilities, trees	2600	x340
1956A	Nene's Game binary search, brute force, data structures, games, greedy	800	x18980
1954E	Chain Reaction binary search, data structures, dsu, greedy, implementation, math, number theory	2200	x1794
1952G	Mathematician Takeover binary search, dfs and similar, math		x926
1951I	Growing Trees binary search, constructive algorithms, flows, graphs, greedy	3200	x45
1951H	Thanos Snap binary search, dp, games, greedy, trees	3200	x199
1951B	Battle Cows binary search, data structures, greedy	1200	x12089
1949B	Charming Meals binary search, brute force, greedy, sortings	1500	x1861
1946C	Tree Cutting binary search, dp, greedy, implementation, trees	1600	x9135
1945G	Cook and Porridge binary search, constructive algorithms, data structures, implementation	2500	x625
1945E	Binary Search binary search, constructive algorithms, greedy	1700	x6957
1943E2	MEX Game 2 (Hard Version) binary search, greedy, two pointers	3300	x231
1943E1	MEX Game 2 (Easy Version) binary search, brute force, greedy	2900	x362
1942D	Learning to Paint binary search, data structures, dfs and similar, dp, greedy, implementation, sortings	2100	x2429
1941F	Rudolf and Imbalance binary search, greedy, sortings, two pointers	1800	x5211
1941E	Rudolf and k Bridges binary search, data structures, dp, two pointers	1600	x8187
1936F	Grand Finale: Circles binary search, geometry	3300	x66
1936D	Bitwise Paradox binary search, bitmasks, data structures, greedy, two pointers	3100	x416
1936B	Pinball binary search, data structures, implementation, math, two pointers	2000	x2454
1935F	Andrey's Tree binary search, constructive algorithms, data structures, dfs and similar, dsu, greedy, implementation, trees	2800	x393
1935D	Exam in MAC binary search, combinatorics, implementation, math	1800	x7346
1935C	Messenger in MAC binary search, brute force, constructive algorithms, data structures, dp, greedy, sortings	1800	x7149
1934C	Find a Mine binary search, constructive algorithms, geometry, greedy, interactive, math	1700	x6052
1933E	Turtle vs. Rabbit Race: Optimal Trainings binary search, implementation, math, ternary search	1500	x9739
1930C	Lexicographically Largest binary search, constructive algorithms, data structures, greedy, sortings	1700	x6418
1929C	Sasha and the Casino binary search, brute force, constructive algorithms, games, greedy, math	1400	x13278
1928B	Equalize binary search, greedy, sortings, two pointers	1200	x15315
1927D	Find the Different Ones! binary search, brute force, data structures, dp, dsu, greedy, two pointers	1300	x18328
1926E	Vlad and an Odd Ordering binary search, bitmasks, data structures, dp, implementation, math, number theory	1500	x10075
1923F	Shrink-Reverse binary search, brute force, greedy, hashing, implementation, string suffix structures, strings	2800	x332
1923D	Slimes binary search, constructive algorithms, data structures, greedy, two pointers	1800	x5917
1920F2	Smooth Sailing (Hard Version) binary search, data structures, dsu, geometry, graphs, trees	3000	x405
1920F1	Smooth Sailing (Easy Version) binary search, brute force, data structures, dfs and similar, dsu, graphs, shortest paths	2500	x880
1920D	Array Repetition binary search, brute force, dsu, implementation, math	1900	x5101
1918D	Blocking Elements binary search, data structures, dp, implementation, two pointers	1900	x4276
1915C	Can I Square? binary search, implementation	800	x37719
1913F	Palindromic Problem binary search, data structures, hashing, string suffix structures, strings	2800	x288
1913C	Game with Multiset binary search, bitmasks, brute force, greedy	1300	x13687
1910H	Sum of Digits of Sums *special problem, binary search, data structures	2400	x79
1907D	Jumping Through Segments binary search, constructive algorithms	1400	x12003
1906D	Spaceship Exploration binary search, geometry	2800	x89
1904C	Array Game binary search, brute force, data structures, sortings, two pointers	1400	x10674
1904B	Collecting Game binary search, dp, greedy, sortings, two pointers	1100	x12872
1903F	Babysitting 2-sat, binary search, data structures, graphs, trees	2500	x557
1903D1	Maximum And Queries (easy version) binary search, bitmasks, brute force, greedy	1700	x5099
1902D	Robot Queries binary search, data structures, dp, implementation	1900	x3682
1902B	Getting Points binary search, brute force, greedy	1100	x13347
1901F	Landscaping binary search, geometry, two pointers	2900	x143
1901D	Yet Another Monster Fight binary search, dp, greedy, implementation, math	1700	x6184
1900F	Local Deletions binary search, data structures, implementation	2800	x260
1896D	Ones and Twos binary search, data structures, divide and conquer, math, two pointers	1700	x5193
1896C	Matching Arrays binary search, constructive algorithms, greedy, sortings	1400	x8623
1895G	Two Characters, Two Colors binary search, data structures, dp, flows, greedy	3100	x172
1895E	Infinite Card Game binary search, brute force, data structures, dfs and similar, dp, dsu, games, graphs, greedy, sortings, two pointers	2300	x1456
1891D	Suspicious logarithms binary search, brute force, math	1900	x3711
1891C	Smilo and Monsters binary search, constructive algorithms, greedy, sortings, two pointers	1500	x11337
1887E	Good Colorings binary search, constructive algorithms, graphs, interactive	3100	x333
1887D	Split binary search, data structures, divide and conquer, dsu, math, trees, two pointers	2700	x817
1887C	Minimum Array binary search, brute force, constructive algorithms, data structures, greedy, hashing, two pointers	2400	x1580
1887B	Time Travel binary search, graphs, shortest paths	1900	x2693
1886B	Fear of the Dark binary search, geometry, math	1200	x15197
1884B	Haunted House binary search, greedy, math, two pointers	1100	x11691
1883G2	Dances (Hard Version) binary search, greedy, sortings, two pointers	1900	x4885
1883G1	Dances (Easy version) binary search, greedy, two pointers	1400	x9212
1881G	Anya and the Mysterious String binary search, data structures	2000	x2167
1878G	wxhtzdy ORO Tree binary search, bitmasks, brute force, data structures, dfs and similar, implementation, trees	2300	x1097
1878E	Iva & Pav binary search, bitmasks, data structures, greedy	1400	x11121
1876G	Clubstep binary search, brute force, data structures, greedy, trees	3500	x117
1876F	Indefinite Clownfish binary search, graphs	3500	x111
1873F	Money Trees binary search, greedy, math, two pointers	1300	x13890
1873E	Building an Aquarium binary search, sortings	1100	x23099
1872E	Data Structures Fan binary search, bitmasks, data structures, dp	1500	x12048
1870F	Lazy Numbers binary search, math	2900	x463
1870C	Colorful Table binary search, data structures, dp, implementation, math, two pointers	1300	x10745
1866L	Lihmuf Balling binary search, brute force, math	2400	x654
1866K	Keen Tree Calculation binary search, data structures, dp, geometry, graphs, implementation, trees	2500	x412
1866G	Grouped Carriages binary search, data structures, dp, flows, greedy	2100	x1517
1866F	Freak Joker Process binary search, data structures, sortings	3100	x120
1862G	The Great Equalizer binary search, data structures, math, sortings	2000	x2658
1862F	Magic Will Save the World binary search, bitmasks, brute force, dp	1800	x5697
1862D	Ice Cream Balls binary search, combinatorics, constructive algorithms, math	1300	x16061
1862C	Flower City Fence binary search, data structures, implementation, sortings	1100	x19672
1861F	Four Suits binary search, bitmasks, flows, greedy	3200	x146
1860B	Fancy Coins binary search, brute force, greedy, math	1200	x16043
1859D	Andrey and Escape from Capygrad binary search, data structures, dp, dsu, greedy, sortings	1800	x6562
1857F	Sum and Product binary search, data structures, math	1600	x10458
1856C	To Become Max binary search, brute force, data structures, dp	1600	x11084
1854D	Michael and Hotel binary search, interactive, trees	3000	x523
1853B	Fibonaccharsis binary search, brute force, math	1200	x16536
1852A	Ntarsis' Set binary search, math, number theory	1800	x7578
1851G	Vlad and the Mountains binary search, data structures, dsu, graphs, implementation, sortings, trees, two pointers	2000	x2935

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