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Problems
#
Name
2072C
Creating Keys for StORages Has Become My Main Skill
bitmasks
,
constructive algorithms
,
greedy
1200
x19688
2072B
Having Been a Treasurer in the Past, I Help Goblins Deceive
combinatorics
,
constructive algorithms
,
strings
900
x31085
2072A
New World, New Me, New Array
greedy
,
implementation
,
math
800
x40797
2071F
Towering Arrays
binary search
,
data structures
2700
x348
2071E
LeaFall
combinatorics
,
dp
,
probabilities
,
trees
2600
x826
2071D2
Infinite Sequence (Hard Version)
bitmasks
,
brute force
,
constructive algorithms
,
data structures
,
dp
,
implementation
,
math
2500
x1110
2071D1
Infinite Sequence (Easy Version)
bitmasks
,
brute force
,
dp
,
implementation
,
math
1800
x6741
2071C
Trapmigiano Reggiano
constructive algorithms
,
data structures
,
dfs and similar
,
dp
,
greedy
,
sortings
,
trees
1700
x9773
2071B
Perfecto
brute force
,
constructive algorithms
,
greedy
,
math
1100
x20984
2071A
The Play Never Ends
math
,
number theory
800
x27903
2070F
Friends and Pizza
bitmasks
,
divide and conquer
,
dp
,
fft
3000
x373
2070E
Game with Binary String
constructive algorithms
,
data structures
,
divide and conquer
,
games
,
greedy
,
math
2200
x1873
2070D
Tree Jumps
dfs and similar
,
dp
,
trees
1600
x11227
2070C
Limited Repainting
binary search
,
greedy
1500
x13938
2070B
Robot Program
brute force
,
implementation
,
math
1100
x19785
2070A
FizzBuzz Remixed
brute force
,
math
800
x26565
2069F
Graph Inclusion
data structures
,
dfs and similar
,
divide and conquer
,
dsu
,
graphs
2800
x795
2069E
A, B, AB and BA
constructive algorithms
,
greedy
,
sortings
,
strings
2300
x1928
2069D
Palindrome Shuffle
binary search
,
greedy
,
hashing
,
strings
,
two pointers
1800
x7097
2069C
Beautiful Sequence
combinatorics
,
dp
,
greedy
,
two pointers
1500
x14947
2069B
Set of Strangers
greedy
,
matrices
1200
x18900
2069A
Was there an Array?
graph matchings
,
greedy
800
x26599
2068K
Amusement Park Rides
flows
,
graphs
3000
x209
2068J
The Ultimate Wine Tasting Event
combinatorics
,
greedy
2000
x1634
2068I
Pinball
graphs
,
shortest paths
3500
x62
2068H
Statues
constructive algorithms
,
greedy
,
math
2700
x410
2068G
A Very Long Hike
shortest paths
3500
x65
2068F
Mascot Naming
brute force
,
greedy
,
implementation
,
strings
1900
x1511
2068E
Porto Vs. Benfica
data structures
,
dfs and similar
,
dsu
,
graphs
,
shortest paths
2800
x372
2068D
Morse Code
dp
,
sortings
,
trees
3100
x267
2068C
Ads
binary search
,
greedy
,
two pointers
2100
x1656
2068B
Urban Planning
constructive algorithms
3100
x145
2068A
Condorcet Elections
constructive algorithms
,
graphs
,
greedy
,
probabilities
2300
x1009
2067C
Devyatkino
brute force
,
dfs and similar
,
greedy
,
math
1500
x12817
2067B
Two Large Bags
brute force
,
dp
,
greedy
,
sortings
1200
x19104
2067A
Adjacent Digit Sums
brute force
,
constructive algorithms
,
math
800
x25768
2066F
Curse
constructive algorithms
,
dp
,
math
3300
x73
2066E
Tropical Season
binary search
,
data structures
,
greedy
,
implementation
3300
x421
2066D2
Club of Young Aircraft Builders (hard version)
combinatorics
,
dp
,
math
2900
x633
2066D1
Club of Young Aircraft Builders (easy version)
combinatorics
,
dp
,
math
2400
x1456
2066C
Bitwise Slides
bitmasks
,
combinatorics
,
dp
,
math
2300
x2541
2066B
White Magic
constructive algorithms
,
data structures
,
dp
,
greedy
,
implementation
1900
x5508
2066A
Object Identification
graphs
,
greedy
,
implementation
,
interactive
1400
x7228
2065H
Bro Thinks He's Him
combinatorics
,
data structures
,
divide and conquer
,
dp
,
math
,
matrices
2200
x1996
2065G
Skibidus and Capping
combinatorics
,
math
,
number theory
1700
x6357
2065F
Skibidus and Slay
data structures
,
dfs and similar
,
graphs
,
greedy
,
trees
1700
x7190
2065E
Skibidus and Rizz
constructive algorithms
,
greedy
,
strings
1600
x12078
2065D
Skibidus and Sigma
greedy
,
sortings
1200
x20775
2065C2
Skibidus and Fanum Tax (hard version)
binary search
,
greedy
1300
x18925
2065C1
Skibidus and Fanum Tax (easy version)
binary search
,
dp
,
greedy
1100
x27929
2065B
Skibidus and Ohio
strings
800
x42338
2065A
Skibidus and Amog'u
brute force
,
constructive algorithms
,
greedy
,
implementation
,
strings
800
x56015
2064F
We Be Summing
binary search
,
data structures
,
dp
,
two pointers
2600
x710
2064E
Mycraft Sand Sort
combinatorics
,
data structures
,
dsu
,
greedy
,
math
,
sortings
2400
x1483
2064D
Eating
binary search
,
bitmasks
,
brute force
,
data structures
,
dp
,
greedy
,
trees
,
two pointers
1900
x5911
2064C
Remove the Ends
brute force
,
constructive algorithms
,
dp
,
greedy
1300
x17878
2064B
Variety is Discouraged
binary search
,
constructive algorithms
,
greedy
,
two pointers
1100
x20207
2064A
Brogramming Contest
greedy
,
strings
800
x27160
2063F2
Counting Is Not Fun (Hard Version)
combinatorics
,
data structures
,
dfs and similar
,
dsu
,
graphs
,
implementation
,
trees
2700
x934
2063F1
Counting Is Not Fun (Easy Version)
combinatorics
,
data structures
,
dfs and similar
,
dp
,
dsu
,
graphs
,
hashing
,
implementation
,
math
,
trees
2400
x1558
2063E
Triangle Tree
data structures
,
dfs and similar
,
dp
,
greedy
,
trees
2300
x2397
2063D
Game With Triangles
binary search
,
brute force
,
data structures
,
geometry
,
greedy
,
implementation
,
math
,
ternary search
,
two pointers
2000
x5076
2063C
Remove Exactly Two
brute force
,
data structures
,
dfs and similar
,
dp
,
graphs
,
greedy
,
sortings
,
trees
1600
x14783
2063B
Subsequence Update
constructive algorithms
,
data structures
,
greedy
,
sortings
1100
x23299
2063A
Minimal Coprime
math
,
number theory
800
x31847
2062H
Galaxy Generator
bitmasks
,
combinatorics
,
dp
3500
x177
2062G
Permutation Factory
flows
,
geometry
,
graph matchings
,
graphs
3500
x180
2062F
Traveling Salescat
constructive algorithms
,
dp
,
geometry
,
graphs
,
greedy
,
math
,
sortings
2900
x615
2062E2
The Game (Hard Version)
data structures
,
dfs and similar
,
games
,
graphs
,
implementation
,
trees
3000
x456
2062E1
The Game (Easy Version)
data structures
,
dfs and similar
,
games
,
graphs
,
greedy
,
trees
2000
x4348
2062D
Balanced Tree
dfs and similar
,
dp
,
graphs
,
greedy
,
trees
2200
x3570
2062C
Cirno and Operations
brute force
,
math
1200
x18487
2062B
Clockwork
greedy
,
math
900
x23884
2062A
String
constructive algorithms
,
greedy
,
math
,
strings
800
x28337
2061I
Kevin and Nivek
divide and conquer
,
dp
3500
x129
2061H2
Kevin and Stones (Hard Version)
flows
,
graphs
3500
x64
2061H1
Kevin and Stones (Easy Version)
flows
,
graph matchings
,
graphs
3500
x106
2061G
Kevin and Teams
constructive algorithms
,
graphs
,
interactive
2900
x522
2061F2
Kevin and Binary String (Hard Version)
data structures
,
dp
3500
x152
2061F1
Kevin and Binary String (Easy Version)
greedy
,
implementation
2100
x2280
2061E
Kevin and And
bitmasks
,
brute force
,
dp
,
greedy
,
math
,
sortings
2000
x4016
2061D
Kevin and Numbers
bitmasks
,
data structures
1600
x10862
2061C
Kevin and Puzzle
2-sat
,
combinatorics
,
dp
1600
x10035
2061B
Kevin and Geometry
binary search
,
geometry
1100
x14760
2061A
Kevin and Arithmetic
math
800
x22387
2060G
Bugged Sort
dp
,
greedy
,
sortings
2400
x1317
2060F
Multiplicative Arrays
combinatorics
,
dp
,
number theory
2200
x2609
2060E
Graph Composition
dfs and similar
,
dsu
,
graphs
,
greedy
1500
x12389
2060D
Subtract Min Sort
greedy
1100
x26330
2060C
Game of Mathletes
games
,
greedy
,
sortings
,
two pointers
900
x32253
2060B
Farmer John's Card Game
greedy
,
sortings
1000
x28750
2060A
Fibonacciness
brute force
800
x41282
2059E2
Stop Gaming (Hard Version)
brute force
,
constructive algorithms
,
data structures
,
hashing
,
strings
2900
x351
2059E1
Stop Gaming (Easy Version)
brute force
,
constructive algorithms
,
greedy
,
hashing
,
strings
2500
x893
2059D
Graph and Graph
data structures
,
graphs
,
greedy
,
shortest paths
1900
x6613
2059C
Customer Service
brute force
,
constructive algorithms
,
graph matchings
,
greedy
,
math
,
sortings
1600
x12635
2059B
Cost of the Array
brute force
,
constructive algorithms
,
greedy
,
math
1300
x18870
2059A
Milya and Two Arrays
constructive algorithms
,
greedy
,
sortings
800
x29258
2057H
Coffee Break
data structures
,
greedy
,
math
3500
x187
2057G
Secret Message
constructive algorithms
,
dfs and similar
,
math
3000
x741
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2-sat
binary search
bitmasks
brute force
chinese remainder theorem
combinatorics
communication
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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