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Problems
#
Name
1872A
Two Vessels
brute force
,
greedy
,
math
800
x37432
1870H
Standard Graph Problem
data structures
,
graphs
,
greedy
,
trees
3500
x77
1870G
MEXanization
data structures
3300
x202
1870F
Lazy Numbers
binary search
,
math
2900
x464
1870E
Another MEX Problem
bitmasks
,
brute force
,
dp
,
shortest paths
2300
x2216
1870D
Prefix Purchase
greedy
,
implementation
,
sortings
1800
x6447
1870C
Colorful Table
binary search
,
data structures
,
dp
,
implementation
,
math
,
two pointers
1300
x10770
1870B
Friendly Arrays
bitmasks
,
greedy
,
math
1200
x13381
1870A
MEXanized Array
constructive algorithms
,
greedy
,
math
800
x18514
1869B
2D Traveling
geometry
,
math
,
shortest paths
,
sortings
1100
x14519
1869A
Make It Zero
constructive algorithms
900
x18757
1868F
LIS?
data structures
,
greedy
,
implementation
3500
x69
1868E
Min-Sum-Max
constructive algorithms
,
dp
,
greedy
3500
x73
1868D
Flower-like Pseudotree
constructive algorithms
,
graphs
,
greedy
,
implementation
,
trees
3000
x248
1868C
Travel Plan
combinatorics
,
dp
,
implementation
,
math
,
trees
2400
x1081
1868B2
Candy Party (Hard Version)
bitmasks
,
constructive algorithms
,
dp
,
greedy
,
implementation
,
math
2100
x2279
1868B1
Candy Party (Easy Version)
bitmasks
,
constructive algorithms
,
graphs
,
greedy
,
implementation
,
math
1700
x6483
1868A
Fill in the Matrix
constructive algorithms
,
implementation
1300
x11214
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
x2996
1867E1
Salyg1n and Array (simple version)
constructive algorithms
,
interactive
,
math
2000
x3533
1867D
Cyclic Operations
brute force
,
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
,
implementation
1800
x5357
1867C
Salyg1n and the MEX Game
constructive algorithms
,
data structures
,
games
,
greedy
,
interactive
1300
x10607
1867B
XOR Palindromes
bitmasks
,
constructive algorithms
,
strings
1100
x15898
1867A
green_gold_dog, array and permutation
constructive algorithms
,
sortings
800
x19258
1866M
Mighty Rock Tower
brute force
,
combinatorics
,
dp
,
math
,
probabilities
2400
x693
1866L
Lihmuf Balling
binary search
,
brute force
,
math
2400
x658
1866K
Keen Tree Calculation
binary search
,
data structures
,
dp
,
geometry
,
graphs
,
implementation
,
trees
2500
x412
1866J
Jackets and Packets
dp
2800
x270
1866I
Imagination Castle
dp
,
games
,
two pointers
2300
x671
1866H
Happy Sets
combinatorics
2100
x1536
1866G
Grouped Carriages
binary search
,
data structures
,
dp
,
flows
,
greedy
2100
x1526
1866F
Freak Joker Process
binary search
,
data structures
,
sortings
3100
x120
1866E
Elevators of Tamem
dp
2700
x277
1866D
Digital Wallet
dp
,
greedy
2300
x1196
1866C
Completely Searching for Inversions
dfs and similar
,
dp
,
graphs
1900
x2878
1866B
Battling with Numbers
combinatorics
,
math
,
number theory
1400
x7247
1866A
Ambitious Kid
math
800
x18281
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
x1316
1864E
Guess Game
bitmasks
,
data structures
,
games
,
math
,
probabilities
,
sortings
,
strings
,
trees
2100
x2469
1864D
Matrix Cascade
brute force
,
constructive algorithms
,
data structures
,
dp
,
greedy
,
math
1700
x6368
1864C
Divisor Chain
bitmasks
,
constructive algorithms
,
math
,
number theory
1300
x12654
1864B
Swap and Reverse
constructive algorithms
,
greedy
,
sortings
,
strings
1100
x14795
1864A
Increasing and Decreasing
constructive algorithms
,
greedy
,
implementation
,
math
800
x19795
1863I
Redundant Routes
constructive algorithms
,
dp
,
trees
3500
x70
1863H
Goldberg Machine 3
dp
,
trees
3500
x72
1863G
Swaps
combinatorics
,
dp
,
graphs
,
math
2800
x569
1863F
Divide, XOR, and Conquer
bitmasks
,
dp
,
math
2600
x1031
1863E
Speedrun
brute force
,
dfs and similar
,
dp
,
graphs
,
greedy
,
math
,
sortings
,
two pointers
2100
x2620
1863D
Two-Colored Dominoes
constructive algorithms
,
greedy
1400
x8972
1863C
MEX Repetition
implementation
,
math
1100
x13428
1863B
Split Sort
greedy
,
math
,
sortings
1100
x14616
1863A
Channel
greedy
,
implementation
800
x17467
1862G
The Great Equalizer
binary search
,
data structures
,
math
,
sortings
2000
x2667
1862F
Magic Will Save the World
binary search
,
bitmasks
,
brute force
,
dp
1800
x5719
1862E
Kolya and Movie Theatre
constructive algorithms
,
data structures
,
greedy
1600
x9664
1862D
Ice Cream Balls
binary search
,
combinatorics
,
constructive algorithms
,
math
1300
x16112
1862C
Flower City Fence
binary search
,
data structures
,
implementation
,
sortings
1100
x19737
1862B
Sequence Game
constructive algorithms
800
x28929
1862A
Gift Carpet
dp
,
greedy
,
implementation
,
strings
800
x30926
1861F
Four Suits
binary search
,
bitmasks
,
flows
,
greedy
3200
x147
1861E
Non-Intersecting Subpermutations
combinatorics
,
dp
,
implementation
,
math
2300
x1628
1861D
Sorting By Multiplication
dp
,
greedy
1800
x6293
1861C
Queries for the Array
data structures
,
dfs and similar
,
implementation
,
strings
,
trees
1600
x9509
1861B
Two Binary Strings
constructive algorithms
,
dp
,
greedy
1000
x20187
1861A
Prime Deletion
constructive algorithms
,
math
800
x23155
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
x1312
1860D
Balanced String
dp
2200
x2799
1860C
Game on Permutation
data structures
,
dp
,
games
,
greedy
1400
x12491
1860B
Fancy Coins
binary search
,
brute force
,
greedy
,
math
1200
x16094
1860A
Not a Substring
constructive algorithms
,
strings
900
x20866
1859F
Teleportation in Byteland
data structures
,
dfs and similar
,
divide and conquer
,
graphs
,
shortest paths
,
trees
3200
x371
1859E
Maximum Monogonosity
brute force
,
dp
,
math
2500
x1673
1859D
Andrey and Escape from Capygrad
binary search
,
data structures
,
dp
,
dsu
,
greedy
,
sortings
1800
x6572
1859C
Another Permutation Problem
brute force
,
dp
,
greedy
,
math
1200
x16362
1859B
Olya and Game with Arrays
constructive algorithms
,
greedy
,
math
,
sortings
1000
x24460
1859A
United We Stand
constructive algorithms
,
math
,
number theory
800
x29515
1858E2
Rollbacks (Hard Version)
data structures
,
interactive
,
trees
2600
x1008
1858E1
Rollbacks (Easy Version)
brute force
,
data structures
,
dfs and similar
,
trees
2500
x1251
1858D
Trees and Segments
brute force
,
data structures
,
dp
,
greedy
,
two pointers
2200
x2713
1858C
Yet Another Permutation Problem
constructive algorithms
,
greedy
,
math
,
number theory
1000
x22018
1858B
The Walkway
brute force
,
dp
,
greedy
,
math
,
number theory
1500
x10682
1858A
Buttons
games
,
greedy
,
math
800
x34565
1857G
Counting Graphs
combinatorics
,
divide and conquer
,
dsu
,
graphs
,
greedy
,
sortings
,
trees
2000
x4100
1857F
Sum and Product
binary search
,
data structures
,
math
1600
x10485
1857E
Power of Points
math
,
sortings
1500
x11563
1857D
Strong Vertices
math
,
sortings
,
trees
1300
x17812
1857C
Assembly via Minimums
greedy
,
sortings
1200
x23127
1857B
Maximum Rounding
greedy
,
implementation
,
math
1100
x22184
1857A
Array Coloring
greedy
,
math
800
x43824
1856E2
PermuTree (hard version)
bitmasks
,
dfs and similar
,
dp
,
fft
,
greedy
,
implementation
,
math
,
trees
2700
x1317
1856E1
PermuTree (easy version)
dfs and similar
,
dp
,
trees
1800
x4926
1856D
More Wrong
divide and conquer
,
interactive
2100
x3095
1856C
To Become Max
binary search
,
brute force
,
data structures
,
dp
1600
x11130
1856B
Good Arrays
implementation
,
math
900
x23203
1856A
Tales of a Sort
implementation
800
x25840
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Codeforces Round 946 (Div. 3)
11:26:44
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