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Problems
#
Name
1733B
Rule of League
constructive algorithms
,
math
900
x19097
1733A
Consecutive Sum
greedy
,
sortings
800
x20546
1732E
Location
data structures
,
dp
,
math
,
number theory
2800
x400
1732D2
Balance (Hard version)
brute force
,
data structures
,
number theory
2400
x1338
1732D1
Balance (Easy version)
brute force
,
data structures
,
implementation
,
number theory
1500
x8106
1732C2
Sheikh (Hard Version)
binary search
,
bitmasks
,
brute force
,
greedy
,
implementation
,
two pointers
2100
x2408
1732C1
Sheikh (Easy version)
binary search
,
bitmasks
,
greedy
,
two pointers
1800
x5469
1732B
Ugu
brute force
,
dp
,
greedy
,
implementation
900
x13844
1732A
Bestie
brute force
,
combinatorics
,
constructive algorithms
,
implementation
,
math
,
number theory
1000
x14292
1731F
Function Sum
brute force
,
combinatorics
,
dp
,
fft
,
math
2500
x647
1731E
Graph Cost
dp
,
greedy
,
math
,
number theory
2000
x2597
1731D
Valiant's New Map
binary search
,
brute force
,
data structures
,
dp
,
two pointers
1700
x6585
1731C
Even Subarrays
bitmasks
,
brute force
,
hashing
,
math
,
number theory
1700
x8770
1731B
Kill Demodogs
greedy
,
math
1100
x16439
1731A
Joey Takes Money
greedy
,
math
800
x22060
1730F
Almost Sorted
bitmasks
,
data structures
,
dp
2700
x401
1730E
Maximums and Minimums
combinatorics
,
data structures
,
divide and conquer
,
number theory
2700
x596
1730D
Prefixes and Suffixes
constructive algorithms
,
strings
,
two pointers
2200
x2570
1730C
Minimum Notation
data structures
,
greedy
,
math
,
sortings
1200
x15872
1730B
Meeting on the Line
binary search
,
geometry
,
greedy
,
implementation
,
math
,
ternary search
1600
x11614
1730A
Planets
data structures
,
greedy
,
sortings
800
x22370
1729G
Cut Substrings
combinatorics
,
dp
,
hashing
,
strings
,
two pointers
2100
x2030
1729F
Kirei and the Linear Function
hashing
,
math
1900
x3937
1729E
Guess the Cycle Size
interactive
,
probabilities
1800
x6648
1729D
Friends and the Restaurant
greedy
,
sortings
,
two pointers
1200
x18377
1729C
Jumping on Tiles
constructive algorithms
,
strings
1100
x19132
1729B
Decode String
greedy
,
strings
800
x28964
1729A
Two Elevators
math
800
x38253
1728G
Illumination
binary search
,
bitmasks
,
brute force
,
combinatorics
,
dp
,
math
,
two pointers
2700
x385
1728F
Fishermen
flows
,
graph matchings
,
greedy
3100
x368
1728E
Red-Black Pepper
brute force
,
data structures
,
greedy
,
math
,
number theory
2300
x1629
1728D
Letter Picking
constructive algorithms
,
dp
,
games
,
two pointers
1800
x6739
1728C
Digital Logarithm
data structures
,
greedy
,
sortings
1400
x14865
1728B
Best Permutation
constructive algorithms
,
greedy
800
x19842
1728A
Colored Balls: Revisited
brute force
,
greedy
,
implementation
,
sortings
800
x24246
1726H
Mainak and the Bleeding Polygon
binary search
,
geometry
,
implementation
,
math
3500
x78
1726G
A Certain Magical Party
combinatorics
,
data structures
,
greedy
,
sortings
3300
x276
1726F
Late For Work (submissions are not allowed)
data structures
,
greedy
,
schedules
,
shortest paths
2900
x131
1726E
Almost Perfect
combinatorics
,
fft
,
math
2400
x1328
1726D
Edge Split
brute force
,
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
probabilities
,
trees
2000
x3509
1726C
Jatayu's Balanced Bracket Sequence
data structures
,
dsu
,
graphs
,
greedy
1300
x11794
1726B
Mainak and Interesting Sequence
bitmasks
,
constructive algorithms
,
math
1100
x14528
1726A
Mainak and Array
greedy
,
math
900
x19147
1725M
Moving Both Hands
dp
,
graphs
,
shortest paths
1800
x2786
1725L
Lemper Cooking Competition
data structures
2400
x848
1725K
Kingdom of Criticism
data structures
,
dsu
2500
x568
1725J
Journey
dp
,
trees
2500
x352
1725I
Imitating the Key Tree
combinatorics
,
dsu
,
trees
2800
x176
1725H
Hot Black Hot White
constructive algorithms
,
math
1800
x2462
1725G
Garage
binary search
,
geometry
,
math
1500
x5517
1725F
Field Photography
bitmasks
,
data structures
,
sortings
2100
x927
1725E
Electrical Efficiency
combinatorics
,
data structures
,
dp
,
math
,
number theory
,
trees
2500
x424
1725D
Deducing Sortability
binary search
,
bitmasks
,
math
2900
x115
1725C
Circular Mirror
binary search
,
combinatorics
,
geometry
,
math
,
two pointers
2000
x1519
1725B
Basketball Together
binary search
,
greedy
,
sortings
1000
x11132
1725A
Accumulation of Dominoes
math
800
x9031
1722G
Even-Odd XOR
bitmasks
,
constructive algorithms
,
greedy
1500
x10067
1722F
L-shapes
dfs and similar
,
implementation
1700
x6456
1722E
Counting Rectangles
brute force
,
data structures
,
dp
,
implementation
1600
x9782
1722D
Line
greedy
,
sortings
1100
x21777
1722C
Word Game
data structures
,
implementation
800
x28985
1722B
Colourblindness
implementation
800
x42394
1722A
Spell Check
implementation
800
x45776
1721F
Matching Reduction
brute force
,
constructive algorithms
,
dfs and similar
,
flows
,
graph matchings
,
graphs
,
interactive
2800
x352
1721E
Prefix Function Queries
dfs and similar
,
dp
,
hashing
,
string suffix structures
,
strings
,
trees
2200
x1785
1721D
Maximum AND
bitmasks
,
dfs and similar
,
divide and conquer
,
greedy
,
sortings
1800
x6184
1721C
Min-Max Array Transformation
binary search
,
greedy
,
two pointers
1400
x12838
1721B
Deadly Laser
implementation
1000
x21390
1721A
Image
greedy
,
implementation
800
x26434
1720E
Misha and Paintings
constructive algorithms
,
data structures
,
greedy
,
implementation
,
math
2700
x727
1720D2
Xor-Subsequence (hard version)
bitmasks
,
data structures
,
dp
,
strings
,
trees
2400
x1708
1720D1
Xor-Subsequence (easy version)
bitmasks
,
brute force
,
dp
,
strings
,
trees
,
two pointers
1800
x5654
1720C
Corners
greedy
,
implementation
1200
x16160
1720B
Interesting Sum
brute force
,
data structures
,
greedy
,
math
,
sortings
800
x20654
1720A
Burenka Plays with Fractions
math
,
number theory
900
x21530
1719C
Fighting Tournament
binary search
,
data structures
,
implementation
,
two pointers
1400
x12755
1719B
Mathematical Circus
constructive algorithms
,
math
800
x18239
1719A
Chip Game
games
,
math
800
x24853
1718F
Burenka, an Array and Queries
data structures
,
math
,
number theory
3300
x140
1718E
Impressionism
constructive algorithms
,
graphs
,
implementation
,
math
3500
x101
1718D
Permutation for Burenka
data structures
,
graph matchings
,
greedy
,
math
,
trees
3300
x283
1718C
Tonya and Burenka-179
data structures
,
greedy
,
math
,
number theory
2400
x1496
1718B
Fibonacci Strings
greedy
,
implementation
,
math
,
number theory
2000
x2839
1718A2
Burenka and Traditions (hard version)
data structures
,
dp
,
greedy
1900
x4915
1718A1
Burenka and Traditions (easy version)
dp
,
greedy
1800
x5409
1717F
Madoka and The First Session
constructive algorithms
,
flows
,
graph matchings
,
graphs
,
implementation
2500
x499
1717E
Madoka and The Best University
math
,
number theory
2200
x2430
1717D
Madoka and The Corruption Scheme
combinatorics
,
constructive algorithms
,
greedy
,
math
1900
x4206
1717C
Madoka and Formal Statement
greedy
1300
x14106
1717B
Madoka and Underground Competitions
constructive algorithms
,
implementation
1100
x14406
1717A
Madoka and Strange Thoughts
math
,
number theory
800
x19045
1716F
Bags with Balls
combinatorics
,
dp
,
math
,
number theory
2500
x986
1716E
Swap and Maximum Block
bitmasks
,
data structures
,
dfs and similar
,
divide and conquer
,
dp
2500
x1007
1716D
Chip Move
brute force
,
dp
,
math
2000
x4907
1716C
Robot in a Hallway
data structures
,
dp
,
greedy
,
implementation
,
ternary search
2000
x3975
1716B
Permutation Chain
constructive algorithms
,
math
800
x21124
1716A
2-3 Moves
greedy
,
math
800
x31032
1715F
Crop Squares
constructive algorithms
,
geometry
,
interactive
,
math
2700
x493
1715E
Long Way Home
data structures
,
divide and conquer
,
dp
,
geometry
,
graphs
,
greedy
,
shortest paths
2400
x1577
1715D
2+ doors
2-sat
,
bitmasks
,
graphs
,
greedy
1900
x4851
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divide and conquer
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number theory
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strings
ternary search
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