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Codeforces Round 968 (Div. 2)
30:11:46
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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
1742A
Sum
implementation
800
x69645
1741B
Funny Permutation
constructive algorithms
,
math
800
x25255
1741A
Compare T-Shirt Sizes
implementation
,
implementation
,
strings
800
x30551
1740B
Jumbo Extra Cheese 2
geometry
,
greedy
,
sortings
800
x13705
1740A
Factorise N+M
constructive algorithms
,
number theory
800
x20012
1739A
Immobile Knight
implementation
800
x22567
1738A
Glory Addicts
greedy
,
implementation
,
sortings
800
x13480
1737A
Ela Sorting Books
greedy
,
implementation
,
strings
900
x10078
1736A
Make A Equal to B
brute force
,
greedy
,
sortings
800
x22691
1735B
Tea with Tangerines
greedy
,
math
900
x18061
1735A
Working Week
constructive algorithms
,
greedy
,
math
800
x20121
1734B
Bright, Nice, Brilliant
constructive algorithms
800
x15722
1734A
Select Three Sticks
brute force
,
greedy
,
sortings
800
x21012
1733B
Rule of League
constructive algorithms
,
math
900
x19585
1733A
Consecutive Sum
greedy
,
sortings
800
x20837
1732B
Ugu
brute force
,
dp
,
greedy
,
implementation
900
x14832
1731A
Joey Takes Money
greedy
,
math
800
x22424
1730A
Planets
data structures
,
greedy
,
sortings
800
x22901
1729B
Decode String
greedy
,
strings
800
x29958
1729A
Two Elevators
math
800
x40007
1728B
Best Permutation
constructive algorithms
,
greedy
800
x20076
1728A
Colored Balls: Revisited
brute force
,
greedy
,
implementation
,
sortings
800
x24547
1726A
Mainak and Array
greedy
,
math
900
x21261
1725A
Accumulation of Dominoes
math
800
x9193
1722C
Word Game
data structures
,
implementation
800
x30580
1722B
Colourblindness
implementation
800
x45217
1722A
Spell Check
implementation
800
x49546
1721A
Image
greedy
,
implementation
800
x26908
1720B
Interesting Sum
brute force
,
data structures
,
greedy
,
math
,
sortings
800
x20998
1720A
Burenka Plays with Fractions
math
,
number theory
900
x22203
1719B
Mathematical Circus
constructive algorithms
,
math
800
x18459
1719A
Chip Game
games
,
math
800
x25343
1717A
Madoka and Strange Thoughts
math
,
number theory
800
x19364
1716B
Permutation Chain
constructive algorithms
,
math
800
x21355
1716A
2-3 Moves
greedy
,
math
800
x32556
1715A
Crossmarket
constructive algorithms
,
greedy
,
math
800
x23419
1714C
Minimum Varied Number
greedy
800
x30830
1714B
Remove Prefix
data structures
,
greedy
,
implementation
800
x30015
1714A
Everyone Loves to Sleep
implementation
,
math
900
x29348
1713A
Traveling Salesman Problem
geometry
,
greedy
,
implementation
800
x21888
1712B
Woeful Permutation
constructive algorithms
,
greedy
,
number theory
800
x21469
1712A
Wonderful Permutation
greedy
,
implementation
800
x23943
1711A
Perfect Permutation
constructive algorithms
800
x25046
1709B
Also Try Minecraft
data structures
,
dp
,
implementation
900
x22536
1709A
Three Doors
brute force
,
greedy
,
implementation
,
math
800
x29460
1708A
Difference Operations
greedy
,
math
800
x21690
1706A
Another String Minimization Problem
2-sat
,
constructive algorithms
,
greedy
,
string suffix structures
,
strings
800
x22806
1705B
Mark the Dust Sweeper
constructive algorithms
,
greedy
,
implementation
900
x22769
1705A
Mark the Photographer
greedy
,
sortings
800
x25093
1704A
Two 0-1 Sequences
constructive algorithms
,
greedy
800
x15945
1703C
Cypher
brute force
,
implementation
,
strings
800
x35109
1703B
ICPC Balloons
data structures
,
implementation
800
x48077
1703A
YES or YES?
brute force
,
implementation
,
strings
800
x67337
1702B
Polycarp Writes a String from Memory
greedy
800
x27447
1702A
Round Down the Price
constructive algorithms
800
x34366
1701B
Permutation
greedy
800
x20128
1701A
Grass Field
implementation
800
x26157
1700A
Optimal Path
constructive algorithms
,
greedy
,
math
800
x22794
1699B
Almost Ternary Matrix
bitmasks
,
constructive algorithms
,
matrices
900
x19575
1699A
The Third Three Number Problem
constructive algorithms
,
math
800
x23912
1698B
Rising Sand
constructive algorithms
,
greedy
,
implementation
800
x20864
1698A
XOR Mixup
bitmasks
,
brute force
800
x28756
1697B
Promo
greedy
,
sortings
900
x26275
1697A
Parkway Walk
greedy
,
implementation
800
x25651
1696B
NIT Destroys the Universe
greedy
900
x20770
1696A
NIT orz!
bitmasks
,
greedy
800
x18658
1695A
Subrectangle Guess
games
800
x16283
1694A
Creep
greedy
,
implementation
800
x22387
1692C
Where's the Bishop?
implementation
800
x33557
1692B
All Distinct
greedy
,
sortings
800
x33780
1692A
Marathon
implementation
800
x63508
1691A
Beat The Odds
brute force
,
greedy
,
math
800
x30337
1690C
Restoring the Duration of Tasks
data structures
,
greedy
,
implementation
800
x25897
1690B
Array Decrements
greedy
,
implementation
800
x25129
1690A
Print a Pedestal (Codeforces logo?)
constructive algorithms
,
greedy
800
x33172
1689B
Mystic Permutation
data structures
,
greedy
900
x17399
1689A
Lex String
brute force
,
greedy
,
implementation
,
sortings
,
two pointers
800
x16670
1688B
Patchouli's Magical Talisman
bitmasks
,
constructive algorithms
,
greedy
,
sortings
800
x18138
1688A
Cirno's Perfect Bitmasks Classroom
bitmasks
,
brute force
800
x21383
1686B
Odd Subarrays
dp
,
greedy
800
x18162
1686A
Everything Everywhere All But One
greedy
800
x20365
1684B
Z mod X = C
constructive algorithms
,
math
800
x20889
1684A
Digit Minimization
constructive algorithms
,
games
,
math
,
strings
800
x23746
1682A
Palindromic Indices
greedy
,
strings
800
x19219
1681B
Card Trick
implementation
,
math
800
x20029
1681A
Game with Cards
games
,
greedy
800
x20912
1680B
Robots
implementation
800
x18252
1680A
Minimums and Maximums
brute force
,
math
800
x21485
1679A
AvtoBus
brute force
,
greedy
,
math
,
number theory
900
x23530
1678B1
Tokitsukaze and Good 01-String (easy version)
implementation
800
x15872
1678A
Tokitsukaze and All Zero Sequence
implementation
800
x18102
1676C
Most Similar Words
brute force
,
greedy
,
implementation
,
implementation
,
math
,
strings
800
x29763
1676B
Equal Candies
greedy
,
math
,
sortings
800
x47373
1676A
Lucky?
implementation
800
x62013
1675B
Make It Increasing
greedy
,
implementation
900
x26423
1675A
Food for Animals
greedy
,
math
800
x32671
1674B
Dictionary
combinatorics
,
math
800
x26123
1674A
Number Transformation
constructive algorithms
,
math
800
x26125
1673A
Subtle Substring Subtraction
games
,
greedy
,
strings
800
x18383
1672B
I love AAAB
constructive algorithms
,
implementation
800
x15761
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