Problemset - Codeforces

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Educational Codeforces Round 165 (Rated for Div. 2)
24:05:46
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Problems

#	Name
1966B	Rectangle Filling constructive algorithms		x8551
1966A	Card Exchange greedy		x11337
1965F	Conference data structures, flows		x24
1965E	Connected Cubes constructive algorithms		x99
1965D	Missing Subarray Sum constructive algorithms		x142
1965C	Folding Strip greedy		x935
1965B	Missing Subsequence Sum constructive algorithms, greedy, number theory		x3381
1965A	Everything Nim games, greedy, math		x7090
1957F2	Frequency Mismatch (Hard Version) binary search, data structures, dfs and similar, hashing, probabilities, trees		x220
1957F1	Frequency Mismatch (Easy Version) binary search, data structures, divide and conquer, hashing, probabilities, trees		x276
1957E	Carousel of Combinations brute force, combinatorics, dp, math, number theory		x850
1957D	A BIT of an Inequality bitmasks, brute force, dp, math		x3153
1957C	How Does the Rook Move? combinatorics, dp, math		x6744
1957B	A BIT of a Construction bitmasks, constructive algorithms, greedy, implementation		x13713
1957A	Stickogon constructive algorithms, greedy		x18279
1956F	Nene and the Passing Game constructive algorithms, data structures, dsu, graphs, sortings	3000	x235
1956E2	Nene vs. Monsters (Hard Version) brute force, greedy, implementation, math	2700	x596
1956E1	Nene vs. Monsters (Easy Version) brute force, implementation, math	2500	x1115
1956D	Nene and the Mex Operator bitmasks, brute force, constructive algorithms, divide and conquer, dp, greedy, implementation, math	2000	x2916
1956C	Nene's Magical Matrix constructive algorithms, greedy, math	1600	x9885
1956B	Nene and the Card Game games, greedy	800	x17800
1956A	Nene's Game binary search, brute force, data structures, games, greedy	800	x17936
1955H	The Most Reckless Defense bitmasks, brute force, constructive algorithms, dp, flows, graph matchings, shortest paths	2300	x926
1955G	GCD on a grid brute force, dfs and similar, dp, implementation, math, number theory	1900	x3112
1955F	Unfair Game dp, games, greedy, math, schedules	1800	x5490
1955E	Long Inversions brute force, greedy, implementation, sortings	1700	x6680
1955D	Inaccurate Subsequence Search data structures, two pointers	1400	x12054
1955C	Inhabitant of the Deep Sea greedy, implementation, math	1300	x16650
1955B	Progressive Square constructive algorithms, data structures, implementation, sortings	1000	x22492
1955A	Yogurt Sale math	800	x34305
1954F	Unique Strings combinatorics, dp, math	3100	x182
1954E	Chain Reaction binary search, data structures, dsu, greedy, implementation, math, number theory	2200	x1594
1954D	Colored Balls combinatorics, dp, math, sortings	1800	x4542
1954C	Long Multiplication greedy, math, number theory	1200	x14602
1954B	Make It Ugly implementation, math	1200	x14503
1954A	Painting the Ribbon constructive algorithms, greedy, math	900	x19271
1952J	Help, what does it mean to be "Based" brute force, constructive algorithms, expression parsing, implementation, sortings		x674
1952I	Dark Matter bitmasks, geometry		x324
1952H	Palindrome implementation, strings		x337
1952G	Mathematician Takeover binary search, dfs and similar, math		x898
1952F	Grid brute force		x1620
1952E	Sweep Line combinatorics, games, math		x202
1952D	Are You a Procrastinator? implementation		x4068
1952C	They Have Fooled brute force, schedules		x2685
1952B	Is it stated? strings		x10171
1952A	Are You a Robot, Again? strings		x11231
1951I	Growing Trees binary search, constructive algorithms, flows, graphs, greedy	3200	x39
1951H	Thanos Snap binary search, dp, games, greedy, trees	3200	x181
1951G	Clacking Balls combinatorics, math, probabilities	3100	x227
1951F	Inversion Composition constructive algorithms, data structures, greedy	2500	x624
1951E	No Palindromes brute force, constructive algorithms, divide and conquer, greedy, hashing, implementation, math, strings	2000	x2885
1951D	Buying Jewels constructive algorithms, greedy, math	2000	x4529
1951C	Ticket Hoarding greedy, math, sortings	1400	x9137
1951B	Battle Cows binary search, data structures, greedy	1200	x11481
1951A	Dual Trigger constructive algorithms, greedy, math	900	x15778
1950G	Shuffling Songs bitmasks, dfs and similar, dp, graphs, hashing, implementation, strings	1900	x3285
1950F	0, 1, 2, Tree! bitmasks, brute force, greedy, implementation, trees	1700	x7214
1950E	Nearly Shortest Repeating Substring brute force, implementation, number theory, strings	1500	x11393
1950D	Product of Binary Decimals brute force, dp, implementation, number theory	1100	x19551
1950C	Clock Conversion implementation, math	800	x33807
1950B	Upscaling implementation	800	x32224
1950A	Stair, Peak, or Neither? implementation	800	x42077
1949K	Make Triangle constructive algorithms, math		x223
1949J	Amanda the Amoeba graphs, implementation, trees, two pointers		x305
1949I	Disks dfs and similar, geometry, graph matchings, graphs		x1061
1949H	Division Avoidance greedy, math		x68
1949G	Scooter graphs, greedy		x612
1949F	Dating greedy, sortings, trees		x699
1949E	Damage per Second brute force, math		x78
1949D	Funny or Scary? constructive algorithms		x296
1949C	Annual Ants' Gathering dfs and similar, dp, greedy, trees		x1084
1949B	Charming Meals binary search, brute force, greedy, sortings		x1547
1949A	Grove brute force, dfs and similar, dp, geometry, probabilities		x80
1948G	MST with Matching bitmasks, brute force, dsu, graph matchings, trees	3100	x582
1948F	Rare Coins combinatorics, math, probabilities	2500	x1077
1948E	Clique Partition brute force, constructive algorithms, graphs, greedy, implementation	2100	x2544
1948D	Tandem Repeats? brute force, strings, two pointers	1700	x8005
1948C	Arrow Path brute force, constructive algorithms, dfs and similar, dp, graphs, shortest paths	1300	x14086
1948B	Array Fix brute force, dp, greedy, implementation	1100	x20120
1948A	Special Characters brute force, constructive algorithms	800	x25893
1946F	Nobody is needed 2-sat, data structures, dfs and similar, dp	2500	x742
1946E	Girl Permutation combinatorics, dp, math, number theory	2200	x2026
1946D	Birthday Gift bitmasks, brute force, constructive algorithms, greedy, implementation	1900	x3905
1946C	Tree Cutting binary search, dp, greedy, implementation, trees	1600	x8848
1946B	Maximum Sum dp, greedy, math	1100	x17528
1946A	Median of an Array greedy, implementation, sortings	800	x23133
1945H	GCD is Greater brute force, data structures, math, number theory	2600	x464
1945G	Cook and Porridge binary search, constructive algorithms, data structures, implementation	2500	x608
1945F	Kirill and Mushrooms data structures, sortings	1900	x3476
1945E	Binary Search binary search, constructive algorithms, greedy	1700	x6753
1945D	Seraphim the Owl dp, greedy	1300	x11774
1945C	Left and Right Houses brute force	1200	x12450
1945B	Fireworks math, number theory	900	x19162
1945A	Setting up Camp greedy, math	800	x24104
1944B	Equal XOR bitmasks, constructive algorithms	1100	x13956
1944A	Destroying Bridges graphs, greedy, math	800	x20785
1943F	Minimum Hamming Distance dp	3500	x72
1943E2	MEX Game 2 (Hard Version) binary search, greedy, two pointers	3300	x211
1943E1	MEX Game 2 (Easy Version) binary search, brute force, greedy	2900	x335
1943D2	Counting Is Fun (Hard Version) combinatorics, dp	2800	x560

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