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Educational Codeforces Round 165 (Rated for Div. 2)
19:42:51
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math
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2-sat
binary search
bitmasks
brute force
chinese remainder theorem
combinatorics
constructive algorithms
data structures
dfs and similar
divide and conquer
dp
dsu
expression parsing
fft
flows
games
geometry
graph matchings
graphs
greedy
hashing
implementation
interactive
math
matrices
meet-in-the-middle
number theory
probabilities
schedules
shortest paths
sortings
string suffix structures
strings
ternary search
trees
two pointers
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Problems
#
Name
1944A
Destroying Bridges
graphs
,
greedy
,
math
800
x20799
1269A
Equation
brute force
,
math
800
x20833
1680A
Minimums and Maximums
brute force
,
math
800
x21000
1499A
Domino on Windowsill
combinatorics
,
constructive algorithms
,
math
800
x21005
1928A
Rectangle Cutting
geometry
,
math
800
x21012
1838A
Blackboard List
constructive algorithms
,
math
800
x21030
1834A
Unit Array
greedy
,
math
800
x21030
1777A
Everybody Likes Good Arrays!
greedy
,
math
800
x21096
1716B
Permutation Chain
constructive algorithms
,
math
800
x21185
1638A
Reverse
constructive algorithms
,
greedy
,
math
800
x21205
1937A
Shuffle Party
implementation
,
math
800
x21262
1207A
There Are Two Types Of Burgers
brute force
,
greedy
,
implementation
,
math
800
x21290
1061A
Coins
greedy
,
implementation
,
math
800
x21292
1223A
CME
math
800
x21300
1708A
Difference Operations
greedy
,
math
800
x21463
1592A
Gamer Hemose
binary search
,
greedy
,
math
,
sortings
800
x21561
1759B
Lost Permutation
math
800
x21577
1064A
Make a triangle!
brute force
,
geometry
,
math
800
x21657
1905A
Constructive Problems
constructive algorithms
,
math
800
x21720
1452A
Robot Program
math
800
x21769
1249A
Yet Another Dividing into Teams
math
800
x21811
1774A
Add Plus Minus Sign
constructive algorithms
,
math
800
x21919
294A
Shaass and Oskols
implementation
,
math
800
x22082
1731A
Joey Takes Money
greedy
,
math
800
x22109
1806A
Walking Master
geometry
,
greedy
,
math
800
x22180
1822C
Bun Lover
math
800
x22247
1466A
Bovine Dilemma
brute force
,
geometry
,
math
800
x22262
1492A
Three swimmers
math
800
x22397
1436A
Reorder
math
800
x22397
1647A
Madoka and Math Dad
implementation
,
math
800
x22442
1700A
Optimal Path
constructive algorithms
,
greedy
,
math
800
x22529
1498A
GCD Sum
brute force
,
math
800
x22624
1566A
Median Maximization
binary search
,
greedy
,
math
800
x22707
1744B
Even-Odd Increments
implementation
,
math
800
x22747
1828A
Divisible Array
constructive algorithms
,
math
800
x22858
1665A
GCD vs LCM
constructive algorithms
,
math
800
x22908
1629B
GCD Arrays
greedy
,
math
,
number theory
800
x22945
1861A
Prime Deletion
constructive algorithms
,
math
800
x23042
1934A
Too Min Too Max
greedy
,
math
800
x23138
1715A
Crossmarket
constructive algorithms
,
greedy
,
math
800
x23166
1895A
Treasure Chest
math
800
x23342
1102A
Integer Sequence Dividing
math
800
x23345
1206A
Choose Two Numbers
math
,
sortings
800
x23435
1748A
The Ultimate Square
math
800
x23442
1684A
Digit Minimization
constructive algorithms
,
games
,
math
,
strings
800
x23446
1699A
The Third Three Number Problem
constructive algorithms
,
math
800
x23617
1929B
Sasha and the Drawing
constructive algorithms
,
greedy
,
math
800
x23635
1657A
Integer Moves
brute force
,
math
800
x23650
1883A
Morning
math
800
x23718
1514A
Perfectly Imperfect Array
math
,
number theory
800
x23770
1594A
Consecutive Sum Riddle
math
800
x23781
1345A
Puzzle Pieces
math
800
x23800
1451A
Subtract or Divide
greedy
,
math
800
x23908
1646A
Square Counting
math
800
x23960
1391A
Suborrays
constructive algorithms
,
math
800
x23984
1822B
Karina and Array
greedy
,
math
,
sortings
800
x24029
1917A
Least Product
constructive algorithms
,
math
800
x24093
1945A
Setting up Camp
greedy
,
math
800
x24119
1180A
Alex and a Rhombus
dp
,
implementation
,
math
800
x24131
1845A
Forbidden Integer
constructive algorithms
,
implementation
,
math
,
number theory
800
x24436
1886A
Sum of Three
brute force
,
constructive algorithms
,
math
800
x24446
1916A
2023
constructive algorithms
,
implementation
,
math
,
number theory
800
x24449
1388A
Captain Flint and Crew Recruitment
brute force
,
greedy
,
math
,
number theory
800
x24527
1741B
Funny Permutation
constructive algorithms
,
math
800
x24746
1901A
Line Trip
greedy
,
math
800
x24837
1719A
Chip Game
games
,
math
800
x24979
1304A
Two Rabbits
math
800
x24996
1525A
Potion-making
math
,
number theory
800
x25044
1517A
Sum of 2050
greedy
,
math
800
x25078
1562A
The Miracle and the Sleeper
greedy
,
math
800
x25172
1312A
Two Regular Polygons
geometry
,
greedy
,
math
,
number theory
800
x25297
1833C
Vlad Building Beautiful Array
greedy
,
math
800
x25466
1814A
Coins
implementation
,
math
800
x25486
1674B
Dictionary
combinatorics
,
math
800
x25573
1674A
Number Transformation
constructive algorithms
,
math
800
x25632
1455A
Strange Functions
math
,
number theory
800
x25984
1743A
Password
brute force
,
combinatorics
,
implementation
,
math
800
x26038
1560C
Infinity Table
implementation
,
math
800
x26066
1920A
Satisfying Constraints
brute force
,
greedy
,
math
800
x26378
1790B
Taisia and Dice
greedy
,
greedy
,
math
800
x26617
1849A
Morning Sandwich
implementation
,
math
800
x26957
1398A
Bad Triangle
geometry
,
math
800
x26961
1196A
Three Piles of Candies
brute force
,
constructive algorithms
,
math
800
x27085
1855A
Dalton the Teacher
greedy
,
math
800
x27098
1783A
Make it Beautiful
constructive algorithms
,
math
,
sortings
800
x27119
1421A
XORwice
bitmasks
,
greedy
,
math
800
x27147
1234A
Equalize Prices Again
math
800
x27242
1285A
Mezo Playing Zoma
math
800
x27262
1788A
One and Two
brute force
,
implementation
,
math
800
x27405
1557A
Ezzat and Two Subsequences
brute force
,
math
,
sortings
800
x27437
1660B
Vlad and Candies
math
800
x27453
1550A
Find The Array
greedy
,
math
800
x27609
1853A
Desorting
brute force
,
greedy
,
math
800
x27779
1768A
Greatest Convex
greedy
,
math
,
number theory
800
x27927
1843B
Long Long
greedy
,
math
,
two pointers
800
x27953
1519A
Red and Blue Beans
math
800
x28270
1611B
Team Composition: Programmers and Mathematicians
binary search
,
constructive algorithms
,
math
800
x28382
1914B
Preparing for the Contest
constructive algorithms
,
math
800
x28410
734B
Anton and Digits
brute force
,
greedy
,
implementation
,
math
800
x28495
1851A
Escalator Conversations
brute force
,
constructive algorithms
,
math
800
x28558
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