Problemset - Codeforces

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Educational Codeforces Round 166 (Rated for Div. 2)
22:36:01
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Problems

#	Name
1974F	Cutting Game binary search, brute force, data structures, implementation, sortings, two pointers	1900	x2495
1974E	Money Buys Happiness dp	1800	x5454
1974D	Ingenuity-2 constructive algorithms, greedy, implementation	1400	x11014
1974C	Beautiful Triple Pairs combinatorics, data structures	1400	x11796
1973C	Cat, Fox and Double Maximum constructive algorithms, greedy, implementation, math, sortings	1700	x6412
1973B	Cat, Fox and the Lonely Array binary search, bitmasks, data structures, greedy, math, two pointers	1300	x11105
1971G	XOUR data structures, dsu, sortings	1400	x7026
1971F	Circle Perimeter binary search, brute force, dfs and similar, geometry, implementation, math	1600	x7475
1971E	Find the Car binary search, math, sortings	1500	x10594
1970G1	Min-Fund Prison (Easy) dfs and similar, trees	1900	x828
1970E1	Trails (Easy) dp	1800	x1163
1970C3	Game on Tree (Hard) dfs and similar, dp, games, trees	1900	x885
1970C2	Game on Tree (Medium) dfs and similar, dp, games, trees	1700	x1463
1970C1	Game on Tree (Easy) games	1400	x1876
1970B1	Exact Neighbours (Easy) constructive algorithms	1900	x731
1969D	Shop Game data structures, greedy, math, sortings	1900	x3599
1969C	Minimizing the Sum dp, implementation	1700	x6612
1968G1	Division + LCP (easy version) binary search, data structures, dp, hashing, string suffix structures, strings	1900	x3357
1968F	Equal XOR Segments binary search, data structures	1800	x4272
1968E	Cells Arrangement constructive algorithms	1600	x8420
1968D	Permutation Game brute force, dfs and similar, games, graphs, greedy, math	1300	x12356
1967B1	Reverse Card (Easy Version) brute force, math, number theory	1400	x10671
1967A	Permutation Counting binary search, greedy, implementation, math, sortings	1400	x9982
1965B	Missing Subsequence Sum bitmasks, constructive algorithms, greedy, number theory	1800	x5411
1965A	Everything Nim games, greedy, math, sortings	1400	x11013
1958E	Yet Another Permutation Constructive *special problem, constructive algorithms	1900	x205
1958D	Staircase *special problem	1600	x359
1958C	Firewood *special problem	1500	x486
1958B	Clock in the Pool *special problem, math	1400	x667
1957D	A BIT of an Inequality bitmasks, brute force, dp, math	1900	x3815
1957C	How Does the Rook Move? combinatorics, dp, math	1600	x8051
1956C	Nene's Magical Matrix constructive algorithms, greedy, math	1600	x11123
1955G	GCD on a grid brute force, dfs and similar, dp, implementation, math, number theory	1900	x3668
1955F	Unfair Game dp, games, greedy, math, schedules	1800	x6108
1955E	Long Inversions brute force, greedy, implementation, sortings	1700	x7444
1955D	Inaccurate Subsequence Search data structures, two pointers	1400	x13269
1955C	Inhabitant of the Deep Sea greedy, implementation, math	1300	x18506
1954D	Colored Balls combinatorics, dp, math, sortings	1800	x5132
1951C	Ticket Hoarding greedy, math, sortings	1400	x9932
1950G	Shuffling Songs bitmasks, dfs and similar, dp, graphs, hashing, implementation, strings	1900	x3625
1950F	0, 1, 2, Tree! bitmasks, brute force, greedy, implementation, trees	1700	x7849
1950E	Nearly Shortest Repeating Substring brute force, implementation, number theory, strings	1500	x12379
1949I	Disks dfs and similar, geometry, graph matchings, graphs	1800	x1238
1949C	Annual Ants' Gathering dfs and similar, dp, greedy, trees	1900	x1308
1949B	Charming Meals binary search, brute force, greedy, sortings	1500	x2081
1948D	Tandem Repeats? brute force, strings, two pointers	1700	x8368
1948C	Arrow Path brute force, constructive algorithms, dfs and similar, dp, graphs, shortest paths	1300	x14803
1946D	Birthday Gift bitmasks, brute force, constructive algorithms, greedy, implementation	1900	x4155
1946C	Tree Cutting binary search, dp, greedy, implementation, trees	1600	x9386
1945F	Kirill and Mushrooms data structures, sortings	1900	x3668
1945E	Binary Search binary search, constructive algorithms, greedy	1700	x7132
1945D	Seraphim the Owl dp, greedy	1300	x12537
1943A	MEX Game 1 games, greedy	1300	x15722
1942C2	Bessie's Birthday Cake (Hard Version) geometry, greedy, math	1700	x5600
1942C1	Bessie's Birthday Cake (Easy Version) geometry, greedy, math	1300	x9799
1941F	Rudolf and Imbalance binary search, greedy, sortings, two pointers	1800	x5299
1941E	Rudolf and k Bridges binary search, data structures, dp, two pointers	1600	x8353
1938H	Pho Restaurant	1600	x1899
1938C	Bit Counting Sequence	1900	x1277
1937B	Binary Path dp, greedy, implementation	1300	x13362
1936A	Bitwise Operation Wizard bitmasks, constructive algorithms, greedy, interactive, math	1700	x6675
1935D	Exam in MAC binary search, combinatorics, implementation, math	1800	x7448
1935C	Messenger in MAC binary search, brute force, constructive algorithms, data structures, dp, greedy, sortings	1800	x7279
1934C	Find a Mine binary search, constructive algorithms, geometry, greedy, interactive, math	1700	x6136
1933E	Turtle vs. Rabbit Race: Optimal Trainings binary search, implementation, math, ternary search	1500	x9904
1932F	Feed Cats data structures, dp, sortings	1900	x3485
1932E	Final Countdown implementation, math, number theory	1600	x7002
1932D	Card Game greedy, implementation	1400	x10144
1932C	LR-remainders brute force, data structures, implementation, math, two pointers	1400	x13997
1931F	Chat Screenshots combinatorics, dfs and similar, graphs	1700	x7070
1931E	Anna and the Valentine's Day Gift games, greedy, math, sortings	1400	x13634
1931D	Divisible Pairs combinatorics, math, number theory	1300	x16198
1930D1	Sum over all Substrings (Easy Version) brute force, dp, greedy, strings	1800	x3742
1930C	Lexicographically Largest binary search, constructive algorithms, data structures, greedy, sortings	1700	x6495
1929D	Sasha and a Walk in the City combinatorics, dp, math, trees	1900	x4241
1929C	Sasha and the Casino binary search, brute force, constructive algorithms, games, greedy, math	1400	x13490
1928D	Lonely Mountain Dungeons brute force, data structures, greedy, math, ternary search	1900	x3811
1928C	Physical Education Lesson brute force, math, number theory	1600	x7649
1927F	Microcycle data structures, dfs and similar, dsu, graphs, greedy, implementation, sortings, trees	1900	x3871
1927E	Klever Permutation constructive algorithms, math, two pointers	1400	x12621
1927D	Find the Different Ones! binary search, brute force, data structures, dp, dsu, greedy, two pointers	1300	x18642
1926G	Vlad and Trouble at MIT dfs and similar, dp, flows, graphs, greedy, implementation, trees	1900	x3041
1926E	Vlad and an Odd Ordering binary search, bitmasks, data structures, dp, implementation, math, number theory	1500	x10325
1926D	Vlad and Division bitmasks, greedy	1300	x13891
1925D	Good Trip combinatorics, dp, math, probabilities	1900	x3287
1924A	Did We Get Everything Covered? constructive algorithms, dp, greedy, shortest paths, strings	1500	x12542
1923D	Slimes binary search, constructive algorithms, data structures, greedy, two pointers	1800	x6035
1923C	Find B constructive algorithms, greedy	1400	x13443
1922E	Increasing Subsequences bitmasks, constructive algorithms, divide and conquer, greedy, math	1800	x7148
1922D	Berserk Monsters brute force, data structures, dsu, implementation, math	1900	x5276
1922C	Closest Cities greedy, implementation, math	1300	x17073
1921F	Sum of Progression brute force, data structures, dp, implementation, math	1900	x3501
1921E	Eat the Chip brute force, games, greedy, math	1600	x9022
1920D	Array Repetition binary search, brute force, dsu, implementation, math	1900	x5162
1920C	Partitioning the Array brute force, math, number theory	1600	x12017
1919C	Grouping Increases data structures, dp, greedy	1400	x17055
1918D	Blocking Elements binary search, data structures, dp, implementation, two pointers	1900	x4337
1918C	XOR-distance bitmasks, greedy, implementation, math	1400	x12753
1917C	Watering an Array brute force, greedy, implementation, math	1600	x9511
1916D	Mathematical Problem brute force, constructive algorithms, geometry, math	1700	x7961

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