Problemset - Codeforces

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Codeforces Round 945 (Div. 2)
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constructive algorithms

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Problems

#	Name
1970D2	Arithmancy (Medium) constructive algorithms, interactive, probabilities, strings	2600	x103
1970D1	Arithmancy (Easy) brute force, constructive algorithms, interactive, strings	2100	x358
1970B3	Exact Neighbours (Hard) constructive algorithms	2300	x277
1970B2	Exact Neighbours (Medium) constructive algorithms	2100	x430
1970B1	Exact Neighbours (Easy) constructive algorithms	1900	x593
1970A3	Balanced Unshuffle (Hard) constructive algorithms, trees	2400	x302
1970A2	Balanced Unshuffle (Medium) brute force, constructive algorithms, trees	2400	x309
1969B	Shifts and Sorting constructive algorithms, greedy	1000	x13863
1969A	Two Friends constructive algorithms, implementation, math	800	x15475
1968E	Cells Arrangement constructive algorithms	1600	x7388
1968C	Assembly via Remainders constructive algorithms, number theory	1000	x18542
1966B	Rectangle Filling constructive algorithms, implementation	1100	x11231
1966A	Card Exchange constructive algorithms, games, greedy	800	x14215
1965E	Connected Cubes constructive algorithms, games	3100	x169
1965D	Missing Subarray Sum constructive algorithms	2900	x256
1965C	Folding Strip constructive algorithms, greedy, strings	2300	x1395
1965B	Missing Subsequence Sum bitmasks, constructive algorithms, greedy, number theory	1800	x4917
1958E	Yet Another Permutation Constructive *special problem, constructive algorithms	1900	x178
1957B	A BIT of a Construction bitmasks, constructive algorithms, greedy, implementation	1100	x14864
1957A	Stickogon constructive algorithms, greedy	800	x19824
1956F	Nene and the Passing Game constructive algorithms, data structures, dsu, graphs, sortings	3000	x260
1956D	Nene and the Mex Operator bitmasks, brute force, constructive algorithms, divide and conquer, dp, greedy, implementation, math	2000	x3201
1956C	Nene's Magical Matrix constructive algorithms, greedy, math	1600	x10637
1955H	The Most Reckless Defense bitmasks, brute force, constructive algorithms, dp, flows, graph matchings, shortest paths	2300	x1013
1955B	Progressive Square constructive algorithms, data structures, implementation, sortings	1000	x23804
1954A	Painting the Ribbon constructive algorithms, greedy, math	900	x20447
1952J	Help, what does it mean to be "Based" brute force, constructive algorithms, expression parsing, implementation, sortings		x692
1951I	Growing Trees binary search, constructive algorithms, flows, graphs, greedy	3200	x45
1951F	Inversion Composition constructive algorithms, data structures, greedy	2500	x649
1951E	No Palindromes brute force, constructive algorithms, divide and conquer, greedy, hashing, implementation, math, strings	2000	x3019
1951D	Buying Jewels constructive algorithms, greedy, math	2000	x4696
1951A	Dual Trigger constructive algorithms, greedy, math	900	x16475
1949K	Make Triangle constructive algorithms, math	2800	x233
1949D	Funny or Scary? constructive algorithms	2600	x306
1948E	Clique Partition brute force, constructive algorithms, graphs, greedy, implementation	2100	x2630
1948C	Arrow Path brute force, constructive algorithms, dfs and similar, dp, graphs, shortest paths	1300	x14469
1948A	Special Characters brute force, constructive algorithms	800	x26311
1946D	Birthday Gift bitmasks, brute force, constructive algorithms, greedy, implementation	1900	x4034
1945G	Cook and Porridge binary search, constructive algorithms, data structures, implementation	2500	x625
1945E	Binary Search binary search, constructive algorithms, greedy	1700	x6952
1944B	Equal XOR bitmasks, constructive algorithms	1100	x14276
1943C	Tree Compass constructive algorithms, dfs and similar, greedy, trees	2300	x1800
1942B	Bessie and MEX constructive algorithms, math	1100	x12256
1942A	Farmer John's Challenge constructive algorithms, math	800	x15570
1941G	Rudolf and Subway constructive algorithms, dfs and similar, graphs, shortest paths	2000	x2957
1940D	Almost Certainly *special problem, constructive algorithms, data structures, sortings		x124
1940B	Three Arrays *special problem, constructive algorithms, implementation, sortings		x174
1940A	Parallel Universes *special problem, constructive algorithms, dfs and similar, dsu, graphs		x80
1939B	Evidence Board *special problem, constructive algorithms, dfs and similar, graphs, trees		x209
1939A	Draw Polygon Lines *special problem, constructive algorithms, dp, geometry, interactive		x14
1936A	Bitwise Operation Wizard bitmasks, constructive algorithms, greedy, interactive, math	1700	x6576
1935F	Andrey's Tree binary search, constructive algorithms, data structures, dfs and similar, dsu, greedy, implementation, trees	2800	x392
1935C	Messenger in MAC binary search, brute force, constructive algorithms, data structures, dp, greedy, sortings	1800	x7145
1935B	Informatics in MAC constructive algorithms	1200	x16473
1935A	Entertainment in MAC constructive algorithms, strings	800	x25482
1934E	Weird LCM Operations brute force, constructive algorithms, number theory	3000	x183
1934D1	XOR Break --- Solo Version bitmasks, constructive algorithms, greedy	2100	x3081
1934C	Find a Mine binary search, constructive algorithms, geometry, greedy, interactive, math	1700	x6047
1933G	Turtle Magic: Royal Turtle Shell Pattern bitmasks, brute force, combinatorics, constructive algorithms, dfs and similar, math	2300	x866
1933D	Turtle Tenacity: Continual Mods constructive algorithms, greedy, math, number theory, sortings	1200	x17830
1930H	Interactive Mex Tree constructive algorithms, dfs and similar, interactive, trees	3300	x123
1930C	Lexicographically Largest binary search, constructive algorithms, data structures, greedy, sortings	1700	x6417
1930B	Permutation Printing brute force, constructive algorithms, math	1000	x13643
1929C	Sasha and the Casino binary search, brute force, constructive algorithms, games, greedy, math	1400	x13269
1929B	Sasha and the Drawing constructive algorithms, greedy, math	800	x23799
1929A	Sasha and the Beautiful Array constructive algorithms, greedy, math, sortings	800	x28918
1928E	Modular Sequence brute force, constructive algorithms, dp, graphs, greedy, math, number theory	2300	x1552
1927E	Klever Permutation constructive algorithms, math, two pointers	1400	x12433
1927B	Following the String constructive algorithms, greedy, strings	900	x30435
1925A	We Got Everything Covered! constructive algorithms, greedy, strings	800	x27172
1924F	Anti-Proxy Attendance constructive algorithms, dp, interactive, ternary search	3500	x129
1924A	Did We Get Everything Covered? constructive algorithms, dp, greedy, shortest paths, strings	1500	x12361
1923D	Slimes binary search, constructive algorithms, data structures, greedy, two pointers	1800	x5912
1923C	Find B constructive algorithms, greedy	1400	x13171
1922E	Increasing Subsequences bitmasks, constructive algorithms, divide and conquer, greedy, math	1800	x7050
1922B	Forming Triangles combinatorics, constructive algorithms, math, sortings	1200	x19040
1922A	Tricky Template constructive algorithms, implementation, strings	800	x25884
1919G	Tree LGM constructive algorithms, divide and conquer, games, trees	3500	x170
1919E	Counting Prefixes combinatorics, constructive algorithms, dp, implementation, math	2600	x777
1919D	01 Tree constructive algorithms, data structures, dsu, greedy, sortings, trees	2100	x3604
1918G	Permutation of Given constructive algorithms, math	2700	x426
1918E	ace5 and Task Order constructive algorithms, divide and conquer, implementation, interactive, probabilities, sortings	2200	x1556
1918B	Minimize Inversions constructive algorithms, data structures, greedy, implementation, sortings	900	x22144
1918A	Brick Wall constructive algorithms, greedy, implementation, math	800	x28769
1917F	Construct Tree bitmasks, constructive algorithms, dp, trees	2500	x898
1917E	Construct Matrix constructive algorithms, math	2500	x1269
1917A	Least Product constructive algorithms, math	800	x24218
1916F	Group Division constructive algorithms, dfs and similar, graphs, greedy	2900	x406
1916D	Mathematical Problem brute force, constructive algorithms, geometry, math	1700	x7904
1916C	Training Before the Olympiad constructive algorithms, games, greedy, implementation, math	1200	x16694
1916B	Two Divisors constructive algorithms, math, number theory	1000	x23667
1916A	2023 constructive algorithms, implementation, math, number theory	800	x24566
1914B	Preparing for the Contest constructive algorithms, math	800	x28582
1912E	Evaluate It and Back Again constructive algorithms, implementation, math	2200	x774
1912C	Cactus Transformation constructive algorithms	3300	x45
1909H	Parallel Swaps Sort constructive algorithms, data structures	3500	x61
1909E	Multiple Lamps bitmasks, brute force, constructive algorithms, math, number theory	2400	x1249
1909C	Heavy Intervals constructive algorithms, data structures, dsu, greedy, math, sortings	1400	x9974
1909B	Make Almost Equal With Mod bitmasks, constructive algorithms, math, number theory	1200	x13927
1907G	Lights brute force, constructive algorithms, dfs and similar, graphs, greedy, implementation	2200	x1754

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