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Codeforces Round 998 (Div. 3)
12:14:10
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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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Name
2033E
Sakurako, Kosuke, and the Permutation
brute force
,
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
math
1400
x10938
2033D
Kousuke's Assignment
data structures
,
dp
,
dsu
,
greedy
,
math
1300
x14351
2033C
Sakurako's Field Trip
dp
,
greedy
,
two pointers
1400
x13952
2033B
Sakurako and Water
brute force
,
constructive algorithms
,
greedy
900
x24554
2033A
Sakurako and Kosuke
constructive algorithms
,
implementation
,
math
800
x35190
2032F
Peanuts
combinatorics
,
dp
,
games
,
math
2700
x324
2032E
Balanced
constructive algorithms
,
data structures
,
greedy
,
implementation
,
math
2400
x1103
2032D
Genokraken
constructive algorithms
,
data structures
,
graphs
,
greedy
,
implementation
,
interactive
,
trees
,
two pointers
1800
x5024
2032C
Trinity
binary search
,
math
,
sortings
,
two pointers
1400
x12742
2032B
Medians
constructive algorithms
,
greedy
,
implementation
,
math
1100
x17267
2032A
Circuit
greedy
,
implementation
,
math
,
number theory
800
x21932
2031F
Penchick and Even Medians
binary search
,
constructive algorithms
,
interactive
,
probabilities
2800
x330
2031E
Penchick and Chloe's Trees
data structures
,
dfs and similar
,
dp
,
greedy
,
implementation
,
math
,
sortings
,
trees
2100
x2117
2031D
Penchick and Desert Rabbit
binary search
,
data structures
,
dfs and similar
,
dp
,
dsu
,
greedy
,
implementation
,
two pointers
1700
x7055
2031C
Penchick and BBQ Buns
constructive algorithms
,
math
,
number theory
1300
x12178
2031B
Penchick and Satay Sticks
brute force
,
greedy
,
sortings
900
x16720
2031A
Penchick and Modern Monument
constructive algorithms
,
dp
,
greedy
,
math
800
x17817
2030G2
The Destruction of the Universe (Hard Version)
combinatorics
,
math
3100
x126
2030G1
The Destruction of the Universe (Easy Version)
combinatorics
,
greedy
,
math
2900
x172
2030F
Orangutan Approved Subarrays
binary search
,
data structures
,
dp
,
greedy
,
implementation
,
two pointers
2400
x818
2030E
MEXimize the Score
combinatorics
,
data structures
,
dp
,
greedy
,
implementation
,
math
2200
x1461
2030D
QED's Favorite Permutation
data structures
,
implementation
,
sortings
1700
x6732
2030C
A TRUE Battle
brute force
,
games
,
greedy
1100
x17036
2030B
Minimise Oneness
combinatorics
,
constructive algorithms
,
games
,
math
800
x21084
2030A
A Gift From Orangutan
constructive algorithms
,
greedy
,
math
,
sortings
800
x24670
2029I
Variance Challenge
flows
,
graphs
,
greedy
3400
x42
2029H
Message Spread
bitmasks
,
brute force
,
combinatorics
,
dp
3500
x66
2029G
Balanced Problem
data structures
,
dp
3000
x159
2029F
Palindrome Everywhere
constructive algorithms
,
graphs
,
greedy
2500
x703
2029E
Common Generator
brute force
,
constructive algorithms
,
math
,
number theory
2100
x2724
2029D
Cool Graph
constructive algorithms
,
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
trees
1900
x2990
2029C
New Rating
binary search
,
data structures
,
dp
,
greedy
1700
x5598
2029B
Replacement
constructive algorithms
,
games
,
strings
1100
x9443
2029A
Set
greedy
,
math
800
x12022
2028F
Alice's Adventures in Addition
bitmasks
,
brute force
,
dp
,
implementation
2700
x387
2028E
Alice's Adventures in the Rabbit Hole
combinatorics
,
dfs and similar
,
dp
,
games
,
greedy
,
math
,
probabilities
,
trees
2300
x1420
2028D
Alice's Adventures in Cards
constructive algorithms
,
data structures
,
dp
,
graphs
,
greedy
,
implementation
,
ternary search
2000
x2834
2028C
Alice's Adventures in Cutting Cake
binary search
,
dp
,
greedy
,
two pointers
1600
x7417
2028B
Alice's Adventures in Permuting
binary search
,
implementation
,
math
1400
x10327
2028A
Alice's Adventures in ''Chess''
brute force
,
implementation
,
math
900
x16175
2027E2
Bit Game (Hard Version)
bitmasks
,
dp
,
math
3100
x66
2027E1
Bit Game (Easy Version)
bitmasks
,
brute force
,
games
,
math
2800
x162
2027D2
The Endspeaker (Hard Version)
binary search
,
data structures
,
dp
,
greedy
,
implementation
,
two pointers
2200
x1468
2027D1
The Endspeaker (Easy Version)
binary search
,
dp
,
graphs
,
greedy
,
implementation
,
two pointers
1700
x5298
2027C
Add Zeros
brute force
,
data structures
,
dfs and similar
,
dp
,
graphs
,
greedy
1500
x10255
2027B
Stalin Sort
brute force
,
greedy
1100
x14912
2027A
Rectangle Arrangement
geometry
,
implementation
,
math
800
x19803
2026F
Bermart Ice Cream
data structures
,
dfs and similar
,
divide and conquer
,
dp
,
implementation
,
trees
2700
x239
2026E
Best Subsequence
bitmasks
,
dfs and similar
,
flows
,
graph matchings
,
graphs
2500
x1322
2026D
Sums of Segments
binary search
,
data structures
,
dp
,
implementation
,
math
1900
x4468
2026C
Action Figures
binary search
,
brute force
,
constructive algorithms
,
data structures
,
greedy
,
implementation
1500
x9808
2026B
Black Cells
binary search
,
brute force
,
constructive algorithms
,
greedy
1300
x13188
2026A
Perpendicular Segments
constructive algorithms
,
geometry
,
greedy
,
math
900
x17224
2025G
Variable Damage
data structures
,
flows
3000
x158
2025F
Choose Your Queries
constructive algorithms
,
dfs and similar
,
dp
,
graphs
,
greedy
,
trees
2700
x762
2025E
Card Game
combinatorics
,
dp
,
fft
,
greedy
,
math
2200
x1908
2025D
Attribute Checks
brute force
,
data structures
,
dp
,
implementation
,
math
,
two pointers
1800
x6321
2025C
New Game
binary search
,
brute force
,
greedy
,
implementation
,
sortings
,
two pointers
1300
x15471
2025B
Binomial Coefficients, Kind Of
combinatorics
,
dp
,
math
1100
x17159
2025A
Two Screens
binary search
,
greedy
,
strings
,
two pointers
800
x24642
2024B
Buying Lemonade
binary search
,
constructive algorithms
,
sortings
1100
x14217
2024A
Profitable Interest Rate
greedy
,
math
800
x20109
2023F
Hills and Pits
data structures
,
greedy
,
math
,
matrices
3500
x66
2023E
Tree of Life
dp
,
greedy
,
trees
3300
x104
2023D
Many Games
brute force
,
dp
,
greedy
,
math
,
probabilities
2900
x451
2023C
C+K+S
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
,
hashing
,
implementation
,
strings
2400
x1052
2023B
Skipping
binary search
,
dp
,
graphs
,
shortest paths
1700
x5421
2023A
Concatenation of Arrays
constructive algorithms
,
greedy
,
math
,
sortings
1300
x13201
2022E2
Billetes MX (Hard Version)
binary search
,
combinatorics
,
data structures
,
dsu
,
graphs
2600
x428
2022E1
Billetes MX (Easy Version)
2-sat
,
binary search
,
combinatorics
,
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
2500
x471
2022D2
Asesino (Hard Version)
constructive algorithms
,
dp
,
interactive
2700
x587
2022D1
Asesino (Easy Version)
binary search
,
brute force
,
constructive algorithms
,
implementation
,
interactive
1900
x3082
2022C
Gerrymandering
dp
,
implementation
1800
x4304
2022B
Kar Salesman
binary search
,
greedy
,
math
1300
x11053
2022A
Bus to Pénjamo
constructive algorithms
,
greedy
,
implementation
,
math
800
x14702
2021E3
Digital Village (Extreme Version)
data structures
,
dfs and similar
,
dp
,
dsu
,
graphs
,
greedy
,
math
,
trees
2800
x479
2021E2
Digital Village (Hard Version)
data structures
,
dp
,
dsu
,
graphs
,
math
,
trees
2500
x894
2021E1
Digital Village (Easy Version)
brute force
,
data structures
,
dfs and similar
,
dp
,
dsu
,
fft
,
graphs
,
greedy
,
implementation
,
math
,
trees
2300
x1566
2021D
Boss, Thirsty
dp
,
greedy
,
implementation
2500
x746
2021C2
Adjust The Presentation (Hard Version)
constructive algorithms
,
data structures
,
greedy
,
implementation
,
sortings
1900
x3755
2021C1
Adjust The Presentation (Easy Version)
constructive algorithms
,
greedy
1300
x12022
2021B
Maximize Mex
brute force
,
greedy
,
math
,
number theory
1200
x15409
2021A
Meaning Mean
data structures
,
greedy
,
math
,
sortings
800
x19272
2020F
Count Leaves
dp
,
math
,
number theory
2900
x207
2020E
Expected Power
bitmasks
,
dp
,
math
,
probabilities
2000
x3150
2020D
Connect the Dots
brute force
,
dp
,
dsu
,
graphs
,
math
,
trees
1800
x5946
2020C
Bitwise Balancing
bitmasks
,
hashing
,
implementation
,
math
,
schedules
,
ternary search
1400
x15158
2020B
Brightness Begins
binary search
,
math
1200
x17412
2020A
Find Minimum Operations
bitmasks
,
brute force
,
greedy
,
math
,
number theory
800
x22693
2019B
All Pairs Segments
implementation
,
math
1200
x14654
2019A
Max Plus Size
brute force
,
dp
,
greedy
800
x23859
2018F3
Speedbreaker Counting (Hard Version)
dp
,
greedy
,
math
3100
x192
2018F2
Speedbreaker Counting (Medium Version)
dp
,
greedy
,
math
3000
x185
2018F1
Speedbreaker Counting (Easy Version)
combinatorics
,
dp
,
greedy
,
math
2900
x224
2018E2
Complex Segments (Hard Version)
binary search
,
data structures
,
divide and conquer
,
dsu
,
greedy
,
math
,
sortings
3400
x117
2018E1
Complex Segments (Easy Version)
binary search
,
data structures
,
divide and conquer
,
dsu
,
greedy
,
math
,
sortings
3300
x160
2018D
Max Plus Min Plus Size
data structures
,
dp
,
dsu
,
greedy
,
implementation
,
matrices
,
sortings
2200
x1713
2018C
Tree Pruning
brute force
,
dfs and similar
,
greedy
,
sortings
,
trees
1700
x6502
2018B
Speedbreaker
binary search
,
data structures
,
dp
,
greedy
,
implementation
,
two pointers
1900
x4207
2018A
Cards Partition
2-sat
,
brute force
,
greedy
,
implementation
,
math
1600
x10667
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