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Name
1867A
green_gold_dog, array and permutation
constructive algorithms
,
sortings
800
x19193
1866M
Mighty Rock Tower
brute force
,
combinatorics
,
dp
,
math
,
probabilities
2400
x687
1866L
Lihmuf Balling
binary search
,
brute force
,
math
2400
x651
1866K
Keen Tree Calculation
binary search
,
data structures
,
dp
,
geometry
,
graphs
,
implementation
,
trees
2500
x406
1866J
Jackets and Packets
dp
2800
x266
1866I
Imagination Castle
dp
,
games
,
two pointers
2300
x668
1866H
Happy Sets
combinatorics
2100
x1522
1866G
Grouped Carriages
binary search
,
data structures
,
dp
,
flows
,
greedy
2100
x1504
1866F
Freak Joker Process
binary search
,
data structures
,
sortings
3100
x120
1866E
Elevators of Tamem
dp
2700
x271
1866D
Digital Wallet
dp
,
greedy
2300
x1180
1866C
Completely Searching for Inversions
dfs and similar
,
dp
,
graphs
1900
x2841
1866B
Battling with Numbers
combinatorics
,
math
,
number theory
1400
x7186
1866A
Ambitious Kid
math
800
x17994
1864I
Future Dominators
graphs
,
greedy
3500
x82
1864H
Asterism Stream
dp
,
math
,
matrices
3200
x269
1864G
Magic Square
combinatorics
,
constructive algorithms
,
implementation
3100
x252
1864F
Exotic Queries
data structures
,
implementation
,
sortings
2300
x1308
1864E
Guess Game
bitmasks
,
data structures
,
games
,
math
,
probabilities
,
sortings
,
strings
,
trees
2100
x2465
1864D
Matrix Cascade
brute force
,
constructive algorithms
,
data structures
,
dp
,
greedy
,
math
1700
x6328
1864C
Divisor Chain
bitmasks
,
constructive algorithms
,
math
,
number theory
1300
x12577
1864B
Swap and Reverse
constructive algorithms
,
greedy
,
sortings
,
strings
1100
x14743
1864A
Increasing and Decreasing
constructive algorithms
,
greedy
,
implementation
,
math
800
x19758
1863I
Redundant Routes
constructive algorithms
,
dp
,
trees
3500
x69
1863H
Goldberg Machine 3
dp
,
trees
3500
x71
1863G
Swaps
combinatorics
,
dp
,
graphs
,
math
2800
x556
1863F
Divide, XOR, and Conquer
bitmasks
,
dp
,
math
2600
x1029
1863E
Speedrun
brute force
,
dfs and similar
,
dp
,
graphs
,
greedy
,
math
,
sortings
,
two pointers
2100
x2610
1863D
Two-Colored Dominoes
constructive algorithms
,
greedy
1400
x8927
1863C
MEX Repetition
implementation
,
math
1100
x13366
1863B
Split Sort
greedy
,
math
,
sortings
1100
x14562
1863A
Channel
greedy
,
implementation
800
x17429
1862G
The Great Equalizer
binary search
,
data structures
,
math
,
sortings
2000
x2649
1862F
Magic Will Save the World
binary search
,
bitmasks
,
brute force
,
dp
1800
x5664
1862E
Kolya and Movie Theatre
constructive algorithms
,
data structures
,
greedy
1600
x9582
1862D
Ice Cream Balls
binary search
,
combinatorics
,
constructive algorithms
,
math
1300
x16014
1862C
Flower City Fence
binary search
,
data structures
,
implementation
,
sortings
1100
x19641
1862B
Sequence Game
constructive algorithms
800
x28640
1862A
Gift Carpet
dp
,
greedy
,
implementation
,
strings
800
x30714
1861F
Four Suits
binary search
,
bitmasks
,
flows
,
greedy
3200
x146
1861E
Non-Intersecting Subpermutations
combinatorics
,
dp
,
implementation
,
math
2300
x1615
1861D
Sorting By Multiplication
dp
,
greedy
1800
x6259
1861C
Queries for the Array
data structures
,
dfs and similar
,
implementation
,
strings
,
trees
1600
x9452
1861B
Two Binary Strings
constructive algorithms
,
dp
,
greedy
1000
x20081
1861A
Prime Deletion
constructive algorithms
,
math
800
x23098
1860F
Evaluate RBS
data structures
,
geometry
,
implementation
,
math
,
sortings
2900
x265
1860E
Fast Travel Text Editor
data structures
,
dfs and similar
,
graphs
,
shortest paths
2400
x1303
1860D
Balanced String
dp
2200
x2786
1860C
Game on Permutation
data structures
,
dp
,
games
,
greedy
1400
x12411
1860B
Fancy Coins
binary search
,
brute force
,
greedy
,
math
1200
x16005
1860A
Not a Substring
constructive algorithms
,
strings
900
x20789
1859F
Teleportation in Byteland
data structures
,
dfs and similar
,
divide and conquer
,
graphs
,
shortest paths
,
trees
3200
x365
1859E
Maximum Monogonosity
brute force
,
dp
,
math
2500
x1663
1859D
Andrey and Escape from Capygrad
binary search
,
data structures
,
dp
,
dsu
,
greedy
,
sortings
1800
x6538
1859C
Another Permutation Problem
brute force
,
dp
,
greedy
,
math
1200
x16298
1859B
Olya and Game with Arrays
constructive algorithms
,
greedy
,
math
,
sortings
1000
x24280
1859A
United We Stand
constructive algorithms
,
math
,
number theory
800
x29287
1858E2
Rollbacks (Hard Version)
data structures
,
interactive
,
trees
2600
x1006
1858E1
Rollbacks (Easy Version)
brute force
,
data structures
,
dfs and similar
,
trees
2500
x1249
1858D
Trees and Segments
brute force
,
data structures
,
dp
,
greedy
,
two pointers
2200
x2699
1858C
Yet Another Permutation Problem
constructive algorithms
,
greedy
,
math
,
number theory
1000
x21939
1858B
The Walkway
brute force
,
dp
,
greedy
,
math
,
number theory
1500
x10634
1858A
Buttons
games
,
greedy
,
math
800
x34264
1857G
Counting Graphs
combinatorics
,
divide and conquer
,
dsu
,
graphs
,
greedy
,
sortings
,
trees
2000
x4080
1857F
Sum and Product
binary search
,
data structures
,
math
1600
x10426
1857E
Power of Points
math
,
sortings
1500
x11511
1857D
Strong Vertices
math
,
sortings
,
trees
1300
x17707
1857C
Assembly via Minimums
greedy
,
sortings
1200
x22941
1857B
Maximum Rounding
greedy
,
implementation
,
math
1100
x22115
1857A
Array Coloring
greedy
,
math
800
x43529
1856E2
PermuTree (hard version)
bitmasks
,
dfs and similar
,
dp
,
fft
,
greedy
,
implementation
,
math
,
trees
2700
x1308
1856E1
PermuTree (easy version)
dfs and similar
,
dp
,
trees
1800
x4905
1856D
More Wrong
divide and conquer
,
interactive
2100
x3082
1856C
To Become Max
binary search
,
brute force
,
data structures
,
dp
1600
x11051
1856B
Good Arrays
implementation
,
math
900
x23131
1856A
Tales of a Sort
implementation
800
x25775
1855B
Longest Divisors Interval
brute force
,
combinatorics
,
greedy
,
math
,
number theory
900
x23750
1855A
Dalton the Teacher
greedy
,
math
800
x27167
1854F
Mark and Spaceship
brute force
,
dp
3500
x111
1854E
Game Bundles
brute force
,
constructive algorithms
,
dp
,
greedy
,
math
3000
x381
1854D
Michael and Hotel
binary search
,
interactive
,
trees
3000
x522
1854C
Expected Destruction
combinatorics
,
dp
,
math
,
probabilities
2500
x1396
1854B
Earn or Unlock
bitmasks
,
brute force
,
dp
2200
x3332
1854A2
Dual (Hard Version)
constructive algorithms
,
math
1900
x6681
1854A1
Dual (Easy Version)
constructive algorithms
,
math
1400
x13347
1853B
Fibonaccharsis
binary search
,
brute force
,
math
1200
x16506
1853A
Desorting
brute force
,
greedy
,
math
800
x27956
1852F
Panda Meetups
data structures
,
dp
,
flows
3500
x98
1852E
Rivalries
constructive algorithms
,
data structures
,
greedy
3400
x157
1852D
Miriany and Matchstick
constructive algorithms
,
dp
,
greedy
2800
x428
1852C
Ina of the Mountain
data structures
,
dp
,
greedy
,
math
2400
x1456
1852B
Imbalanced Arrays
constructive algorithms
,
graphs
,
greedy
,
math
,
sortings
,
two pointers
1800
x4137
1852A
Ntarsis' Set
binary search
,
math
,
number theory
1800
x7559
1851G
Vlad and the Mountains
binary search
,
data structures
,
dsu
,
graphs
,
implementation
,
sortings
,
trees
,
two pointers
2000
x2928
1851F
Lisa and the Martians
bitmasks
,
greedy
,
math
,
strings
,
trees
1800
x5299
1851E
Nastya and Potions
dfs and similar
,
dp
,
graphs
,
sortings
1500
x9431
1851D
Prefix Permutation Sums
implementation
,
math
1300
x14346
1851C
Tiles Comeback
greedy
1000
x22242
1851B
Parity Sort
greedy
,
sortings
,
two pointers
800
x28062
1851A
Escalator Conversations
brute force
,
constructive algorithms
,
math
800
x28613
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