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Before contest
Educational Codeforces Round 165 (Rated for Div. 2)
37:06:49
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Difficulty:
—
greedy
combine-tags-by-or
*combine tags by OR
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
1631A
Min Max Swap
greedy
800
x28616
1929A
Sasha and the Beautiful Array
constructive algorithms
,
greedy
,
math
,
sortings
800
x28684
1676C
Most Similar Words
brute force
,
greedy
,
implementation
,
implementation
,
math
,
strings
800
x28697
1919B
Plus-Minus Split
greedy
800
x28724
1709A
Three Doors
brute force
,
greedy
,
implementation
,
math
800
x28937
1541A
Pretty Permutations
constructive algorithms
,
greedy
,
implementation
800
x28959
1807C
Find and Replace
greedy
,
implementation
,
strings
800
x29075
1714B
Remove Prefix
data structures
,
greedy
,
implementation
800
x29251
1729B
Decode String
greedy
,
strings
800
x29309
1529A
Eshag Loves Big Arrays
constructive algorithms
,
greedy
,
math
800
x29349
1931B
Make Equal
greedy
800
x29766
1691A
Beat The Odds
brute force
,
greedy
,
math
800
x29803
1714C
Minimum Varied Number
greedy
800
x29880
1811A
Insert Digit
greedy
,
math
,
strings
800
x29947
1490A
Dense Array
greedy
,
math
800
x30578
1862A
Gift Carpet
dp
,
greedy
,
implementation
,
strings
800
x30584
1538B
Friends and Candies
greedy
,
math
800
x30979
1716A
2-3 Moves
greedy
,
math
800
x31313
1675A
Food for Animals
greedy
,
math
800
x31427
1921B
Arranging Cats
greedy
,
implementation
800
x31815
1873D
1D Eraser
greedy
,
implementation
,
two pointers
800
x32410
1690A
Print a Pedestal (Codeforces logo?)
constructive algorithms
,
greedy
800
x32465
1692B
All Distinct
greedy
,
sortings
800
x32658
1669C
Odd/Even Increments
greedy
,
greedy
,
implementation
,
math
800
x32747
1473A
Replacing Elements
greedy
,
implementation
,
math
,
sortings
800
x32808
1843A
Sasha and Array Coloring
greedy
,
sortings
,
two pointers
800
x32873
1858A
Buttons
games
,
greedy
,
math
800
x33975
1325B
CopyCopyCopyCopyCopy
greedy
,
implementation
800
x34780
978B
File Name
greedy
,
strings
800
x34923
1660A
Vasya and Coins
greedy
,
math
800
x34955
1933A
Turtle Puzzle: Rearrange and Negate
greedy
,
math
,
sortings
800
x35072
1538A
Stone Game
brute force
,
dp
,
greedy
800
x35673
1537A
Arithmetic Array
greedy
,
math
800
x35886
1385B
Restore the Permutation by Merger
greedy
800
x36236
1368A
C+=
brute force
,
greedy
,
implementation
,
math
800
x36681
1872A
Two Vessels
brute force
,
greedy
,
math
800
x37136
1325A
EhAb AnD gCd
constructive algorithms
,
greedy
,
number theory
800
x38017
1358A
Park Lighting
greedy
,
math
800
x38032
1389A
LCM Problem
constructive algorithms
,
greedy
,
math
,
number theory
800
x38236
1348A
Phoenix and Balance
greedy
,
math
800
x38312
1878A
How Much Does Daytona Cost?
greedy
800
x38414
1353A
Most Unstable Array
constructive algorithms
,
greedy
,
math
800
x38906
1927A
Make it White
greedy
,
strings
800
x39384
1807B
Grab the Candies
greedy
800
x39598
1921A
Square
greedy
,
math
800
x39658
1311A
Add Odd or Subtract Even
greedy
,
implementation
,
math
800
x40616
1472A
Cards for Friends
greedy
,
math
800
x40772
702A
Maximum Increase
dp
,
greedy
,
implementation
800
x41311
1760B
Atilla's Favorite Problem
greedy
,
implementation
,
strings
800
x41501
1399B
Gifts Fixing
greedy
800
x42300
1857A
Array Coloring
greedy
,
math
800
x43157
1873B
Good Kid
brute force
,
greedy
,
math
800
x43883
1742B
Increasing
greedy
,
implementation
,
sortings
800
x44122
1676B
Equal Candies
greedy
,
math
,
sortings
800
x44922
1360B
Honest Coach
greedy
,
sortings
800
x45942
749A
Bachgold Problem
greedy
,
implementation
,
math
,
number theory
800
x46316
1472B
Fair Division
dp
,
greedy
,
math
800
x47333
1353B
Two Arrays And Swaps
greedy
,
sortings
800
x47433
1360A
Minimal Square
greedy
,
math
800
x47895
1551A
Polycarp and Coins
greedy
,
math
800
x48231
1370A
Maximum GCD
greedy
,
implementation
,
math
,
number theory
800
x48573
1367B
Even Array
greedy
,
math
800
x50099
490A
Team Olympiad
greedy
,
implementation
,
sortings
800
x55300
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x56497
381A
Sereja and Dima
greedy
,
implementation
,
two pointers
800
x60009
1409A
Yet Another Two Integers Problem
greedy
,
math
800
x62303
1399A
Remove Smallest
greedy
,
sortings
800
x62513
996A
Hit the Lottery
dp
,
greedy
800
x83906
469A
I Wanna Be the Guy
greedy
,
implementation
800
x91025
339A
Helpful Maths
greedy
,
implementation
,
sortings
,
strings
800
x197500
50A
Domino piling
greedy
,
math
800
x227951
231A
Team
brute force
,
greedy
800
x298072
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