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Name
1868B1
Candy Party (Easy Version)
bitmasks
,
constructive algorithms
,
graphs
,
greedy
,
implementation
,
math
1700
x6447
1868A
Fill in the Matrix
constructive algorithms
,
implementation
1300
x11161
1867F
Most Different Tree
brute force
,
constructive algorithms
,
dfs and similar
,
greedy
,
hashing
2700
x400
1867E2
Salyg1n and Array (hard version)
constructive algorithms
,
interactive
2200
x2984
1867E1
Salyg1n and Array (simple version)
constructive algorithms
,
interactive
,
math
2000
x3521
1867D
Cyclic Operations
brute force
,
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
,
implementation
1800
x5332
1867C
Salyg1n and the MEX Game
constructive algorithms
,
data structures
,
games
,
greedy
,
interactive
1300
x10555
1867B
XOR Palindromes
bitmasks
,
constructive algorithms
,
strings
1100
x15836
1867A
green_gold_dog, array and permutation
constructive algorithms
,
sortings
800
x19203
1866M
Mighty Rock Tower
brute force
,
combinatorics
,
dp
,
math
,
probabilities
2400
x688
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
x268
1866I
Imagination Castle
dp
,
games
,
two pointers
2300
x668
1866H
Happy Sets
combinatorics
2100
x1525
1866G
Grouped Carriages
binary search
,
data structures
,
dp
,
flows
,
greedy
2100
x1508
1866F
Freak Joker Process
binary search
,
data structures
,
sortings
3100
x120
1866E
Elevators of Tamem
dp
2700
x272
1866D
Digital Wallet
dp
,
greedy
2300
x1182
1866C
Completely Searching for Inversions
dfs and similar
,
dp
,
graphs
1900
x2846
1866B
Battling with Numbers
combinatorics
,
math
,
number theory
1400
x7201
1866A
Ambitious Kid
math
800
x18053
1864I
Future Dominators
graphs
,
greedy
3500
x82
1864H
Asterism Stream
dp
,
math
,
matrices
3200
x270
1864G
Magic Square
combinatorics
,
constructive algorithms
,
implementation
3100
x252
1864F
Exotic Queries
data structures
,
implementation
,
sortings
2300
x1312
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
x6336
1864C
Divisor Chain
bitmasks
,
constructive algorithms
,
math
,
number theory
1300
x12591
1864B
Swap and Reverse
constructive algorithms
,
greedy
,
sortings
,
strings
1100
x14753
1864A
Increasing and Decreasing
constructive algorithms
,
greedy
,
implementation
,
math
800
x19763
1863I
Redundant Routes
constructive algorithms
,
dp
,
trees
3500
x70
1863H
Goldberg Machine 3
dp
,
trees
3500
x72
1863G
Swaps
combinatorics
,
dp
,
graphs
,
math
2800
x558
1863F
Divide, XOR, and Conquer
bitmasks
,
dp
,
math
2600
x1030
1863E
Speedrun
brute force
,
dfs and similar
,
dp
,
graphs
,
greedy
,
math
,
sortings
,
two pointers
2100
x2614
1863D
Two-Colored Dominoes
constructive algorithms
,
greedy
1400
x8937
1863C
MEX Repetition
implementation
,
math
1100
x13389
1863B
Split Sort
greedy
,
math
,
sortings
1100
x14583
1863A
Channel
greedy
,
implementation
800
x17439
1862G
The Great Equalizer
binary search
,
data structures
,
math
,
sortings
2000
x2651
1862F
Magic Will Save the World
binary search
,
bitmasks
,
brute force
,
dp
1800
x5677
1862E
Kolya and Movie Theatre
constructive algorithms
,
data structures
,
greedy
1600
x9595
1862D
Ice Cream Balls
binary search
,
combinatorics
,
constructive algorithms
,
math
1300
x16035
1862C
Flower City Fence
binary search
,
data structures
,
implementation
,
sortings
1100
x19651
1862B
Sequence Game
constructive algorithms
800
x28685
1862A
Gift Carpet
dp
,
greedy
,
implementation
,
strings
800
x30745
1861F
Four Suits
binary search
,
bitmasks
,
flows
,
greedy
3200
x146
1861E
Non-Intersecting Subpermutations
combinatorics
,
dp
,
implementation
,
math
2300
x1618
1861D
Sorting By Multiplication
dp
,
greedy
1800
x6273
1861C
Queries for the Array
data structures
,
dfs and similar
,
implementation
,
strings
,
trees
1600
x9463
1861B
Two Binary Strings
constructive algorithms
,
dp
,
greedy
1000
x20089
1861A
Prime Deletion
constructive algorithms
,
math
800
x23107
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
x1305
1860D
Balanced String
dp
2200
x2791
1860C
Game on Permutation
data structures
,
dp
,
games
,
greedy
1400
x12425
1860B
Fancy Coins
binary search
,
brute force
,
greedy
,
math
1200
x16022
1860A
Not a Substring
constructive algorithms
,
strings
900
x20800
1859F
Teleportation in Byteland
data structures
,
dfs and similar
,
divide and conquer
,
graphs
,
shortest paths
,
trees
3200
x370
1859E
Maximum Monogonosity
brute force
,
dp
,
math
2500
x1665
1859D
Andrey and Escape from Capygrad
binary search
,
data structures
,
dp
,
dsu
,
greedy
,
sortings
1800
x6549
1859C
Another Permutation Problem
brute force
,
dp
,
greedy
,
math
1200
x16319
1859B
Olya and Game with Arrays
constructive algorithms
,
greedy
,
math
,
sortings
1000
x24320
1859A
United We Stand
constructive algorithms
,
math
,
number theory
800
x29358
1858E2
Rollbacks (Hard Version)
data structures
,
interactive
,
trees
2600
x1007
1858E1
Rollbacks (Easy Version)
brute force
,
data structures
,
dfs and similar
,
trees
2500
x1250
1858D
Trees and Segments
brute force
,
data structures
,
dp
,
greedy
,
two pointers
2200
x2702
1858C
Yet Another Permutation Problem
constructive algorithms
,
greedy
,
math
,
number theory
1000
x21952
1858B
The Walkway
brute force
,
dp
,
greedy
,
math
,
number theory
1500
x10643
1858A
Buttons
games
,
greedy
,
math
800
x34327
1857G
Counting Graphs
combinatorics
,
divide and conquer
,
dsu
,
graphs
,
greedy
,
sortings
,
trees
2000
x4089
1857F
Sum and Product
binary search
,
data structures
,
math
1600
x10437
1857E
Power of Points
math
,
sortings
1500
x11518
1857D
Strong Vertices
math
,
sortings
,
trees
1300
x17729
1857C
Assembly via Minimums
greedy
,
sortings
1200
x22987
1857B
Maximum Rounding
greedy
,
implementation
,
math
1100
x22129
1857A
Array Coloring
greedy
,
math
800
x43599
1856E2
PermuTree (hard version)
bitmasks
,
dfs and similar
,
dp
,
fft
,
greedy
,
implementation
,
math
,
trees
2700
x1309
1856E1
PermuTree (easy version)
dfs and similar
,
dp
,
trees
1800
x4911
1856D
More Wrong
divide and conquer
,
interactive
2100
x3088
1856C
To Become Max
binary search
,
brute force
,
data structures
,
dp
1600
x11062
1856B
Good Arrays
implementation
,
math
900
x23139
1856A
Tales of a Sort
implementation
800
x25797
1855B
Longest Divisors Interval
brute force
,
combinatorics
,
greedy
,
math
,
number theory
900
x23796
1855A
Dalton the Teacher
greedy
,
math
800
x27180
1854F
Mark and Spaceship
brute force
,
dp
3500
x112
1854E
Game Bundles
brute force
,
constructive algorithms
,
dp
,
greedy
,
math
3000
x383
1854D
Michael and Hotel
binary search
,
interactive
,
trees
3000
x522
1854C
Expected Destruction
combinatorics
,
dp
,
math
,
probabilities
2500
x1401
1854B
Earn or Unlock
bitmasks
,
brute force
,
dp
2200
x3344
1854A2
Dual (Hard Version)
constructive algorithms
,
math
1900
x6694
1854A1
Dual (Easy Version)
constructive algorithms
,
math
1400
x13368
1853B
Fibonaccharsis
binary search
,
brute force
,
math
1200
x16525
1853A
Desorting
brute force
,
greedy
,
math
800
x27999
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
x429
1852C
Ina of the Mountain
data structures
,
dp
,
greedy
,
math
2400
x1457
1852B
Imbalanced Arrays
constructive algorithms
,
graphs
,
greedy
,
math
,
sortings
,
two pointers
1800
x4141
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