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ICPC Challenge
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Before contest
2023-2024 ICPC, Asia Jakarta Regional Contest (Online Mirror, Unrated, ICPC Rules, Teams Preferred)
22:05:41
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Before contest
Educational Codeforces Round 159 (Rated for Div. 2)
32:05:41
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2-sat
binary search
bitmasks
brute force
chinese remainder theorem
combinatorics
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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Problems
#
Name
1863I
Redundant Routes
constructive algorithms
,
dp
,
trees
3500
x57
1863H
Goldberg Machine 3
dp
,
trees
3500
x59
1863G
Swaps
combinatorics
,
dp
,
graphs
,
math
2800
x461
1863F
Divide, XOR, and Conquer
bitmasks
,
dp
,
math
2600
x897
1863E
Speedrun
brute force
,
dfs and similar
,
dp
,
graphs
,
greedy
,
math
,
sortings
,
two pointers
2100
x2414
1863D
Two-Colored Dominoes
constructive algorithms
,
greedy
1400
x7963
1863C
MEX Repetition
implementation
,
math
1100
x12118
1863B
Split Sort
greedy
,
math
,
sortings
1100
x13131
1863A
Channel
greedy
,
implementation
800
x16334
1862G
The Great Equalizer
binary search
,
data structures
,
math
,
sortings
2000
x2336
1862F
Magic Will Save the World
binary search
,
bitmasks
,
brute force
,
dp
1800
x4925
1862E
Kolya and Movie Theatre
constructive algorithms
,
data structures
,
greedy
1600
x8419
1862D
Ice Cream Balls
binary search
,
combinatorics
,
constructive algorithms
,
math
1300
x14441
1862C
Flower City Fence
binary search
,
data structures
,
implementation
,
sortings
1100
x17986
1862B
Sequence Game
constructive algorithms
800
x24905
1862A
Gift Carpet
dp
,
greedy
,
implementation
,
strings
800
x28167
1861F
Four Suits
binary search
,
bitmasks
,
flows
,
greedy
3200
x111
1861E
Non-Intersecting Subpermutations
combinatorics
,
dp
,
implementation
,
math
2300
x1457
1861D
Sorting By Multiplication
dp
,
greedy
1800
x5395
1861C
Queries for the Array
data structures
,
dfs and similar
,
implementation
,
strings
,
trees
1600
x8440
1861B
Two Binary Strings
constructive algorithms
,
dp
,
greedy
1000
x18095
1861A
Prime Deletion
constructive algorithms
,
math
800
x21752
1860F
Evaluate RBS
data structures
,
geometry
,
implementation
,
math
,
sortings
2900
x241
1860E
Fast Travel Text Editor
data structures
,
dfs and similar
,
graphs
,
shortest paths
2400
x1173
1860D
Balanced String
dp
2200
x2507
1860C
Game on Permutation
data structures
,
dp
,
games
,
greedy
1400
x11044
1860B
Fancy Coins
binary search
,
brute force
,
greedy
,
math
1200
x14275
1860A
Not a Substring
constructive algorithms
,
strings
900
x19312
1859F
Teleportation in Byteland
data structures
,
dfs and similar
,
divide and conquer
,
graphs
,
shortest paths
,
trees
3200
x337
1859E
Maximum Monogonosity
brute force
,
dp
,
math
2500
x1568
1859D
Andrey and Escape from Capygrad
binary search
,
data structures
,
dp
,
dsu
,
greedy
,
sortings
1800
x5970
1859C
Another Permutation Problem
brute force
,
dp
,
greedy
,
math
1200
x15128
1859B
Olya and Game with Arrays
constructive algorithms
,
greedy
,
math
,
sortings
1000
x21184
1859A
United We Stand
constructive algorithms
,
math
,
number theory
800
x26000
1858E2
Rollbacks (Hard Version)
data structures
,
interactive
,
trees
2600
x902
1858E1
Rollbacks (Easy Version)
brute force
,
data structures
,
dfs and similar
,
trees
2500
x1142
1858D
Trees and Segments
brute force
,
data structures
,
dp
,
greedy
,
two pointers
2200
x2461
1858C
Yet Another Permutation Problem
constructive algorithms
,
greedy
,
math
,
number theory
1000
x20302
1858B
The Walkway
brute force
,
dp
,
greedy
,
math
,
number theory
1500
x9679
1858A
Buttons
games
,
greedy
,
math
800
x29770
1857G
Counting Graphs
combinatorics
,
divide and conquer
,
dsu
,
graphs
,
greedy
,
sortings
,
trees
2000
x3627
1857F
Sum and Product
binary search
,
data structures
,
math
1600
x9111
1857E
Power of Points
math
,
sortings
1500
x10252
1857D
Strong Vertices
math
,
sortings
,
trees
1300
x16021
1857C
Assembly via Minimums
greedy
,
sortings
1200
x19938
1857B
Maximum Rounding
greedy
,
implementation
,
math
1100
x20682
1857A
Array Coloring
greedy
,
math
800
x38347
1856E2
PermuTree (hard version)
bitmasks
,
dfs and similar
,
dp
,
fft
,
greedy
,
implementation
,
math
,
trees
2700
x1163
1856E1
PermuTree (easy version)
dfs and similar
,
dp
,
trees
1800
x4367
1856D
More Wrong
divide and conquer
,
interactive
2100
x2839
1856C
To Become Max
binary search
,
brute force
,
data structures
,
dp
1600
x9717
1856B
Good Arrays
implementation
,
math
900
x21254
1856A
Tales of a Sort
implementation
800
x24642
1855B
Longest Divisors Interval
brute force
,
combinatorics
,
greedy
,
math
,
number theory
900
x20784
1855A
Dalton the Teacher
greedy
,
math
800
x25827
1854F
Mark and Spaceship
brute force
,
dp
3500
x89
1854E
Game Bundles
brute force
,
constructive algorithms
,
dp
,
greedy
,
math
3000
x345
1854D
Michael and Hotel
binary search
,
interactive
,
trees
3000
x422
1854C
Expected Destruction
combinatorics
,
dp
,
math
,
probabilities
2500
x1272
1854B
Earn or Unlock
bitmasks
,
brute force
,
dp
2200
x3062
1854A2
Dual (Hard Version)
constructive algorithms
,
math
1900
x6179
1854A1
Dual (Easy Version)
constructive algorithms
,
math
1400
x12287
1853B
Fibonaccharsis
binary search
,
brute force
,
math
1200
x15175
1853A
Desorting
brute force
,
greedy
,
math
800
x24311
1852F
Panda Meetups
data structures
,
dp
,
flows
3500
x86
1852E
Rivalries
constructive algorithms
,
data structures
,
greedy
3400
x135
1852D
Miriany and Matchstick
constructive algorithms
,
dp
,
greedy
2800
x398
1852C
Ina of the Mountain
data structures
,
dp
,
greedy
,
math
2400
x1310
1852B
Imbalanced Arrays
constructive algorithms
,
graphs
,
greedy
,
math
,
sortings
,
two pointers
1800
x3678
1852A
Ntarsis' Set
binary search
,
math
,
number theory
1800
x6830
1851G
Vlad and the Mountains
binary search
,
data structures
,
dsu
,
graphs
,
implementation
,
sortings
,
trees
,
two pointers
2000
x2576
1851F
Lisa and the Martians
bitmasks
,
greedy
,
math
,
strings
,
trees
1800
x4642
1851E
Nastya and Potions
dfs and similar
,
dp
,
graphs
,
sortings
1500
x8249
1851D
Prefix Permutation Sums
implementation
,
math
1300
x13008
1851C
Tiles Comeback
greedy
1000
x20358
1851B
Parity Sort
greedy
,
sortings
,
two pointers
800
x26045
1851A
Escalator Conversations
brute force
,
constructive algorithms
,
math
800
x27154
1850H
The Third Letter
dfs and similar
,
dsu
,
graphs
,
greedy
,
implementation
1700
x6488
1850G
The Morning Star
combinatorics
,
data structures
,
geometry
,
implementation
,
math
,
sortings
1500
x9642
1850F
We Were Both Children
brute force
,
implementation
,
math
,
number theory
1300
x14786
1850E
Cardboard for Pictures
binary search
,
geometry
,
implementation
,
math
1100
x18122
1850D
Balanced Round
brute force
,
greedy
,
implementation
,
sortings
900
x27208
1850C
Word on the Paper
implementation
,
strings
800
x35601
1850B
Ten Words of Wisdom
implementation
,
sortings
800
x35978
1850A
To My Critics
implementation
,
sortings
800
x42581
1849F
XOR Partition
binary search
,
bitmasks
,
data structures
,
divide and conquer
,
greedy
,
trees
2700
x541
1849E
Max to the Right of Min
binary search
,
data structures
,
divide and conquer
,
dp
,
dsu
,
two pointers
2300
x1324
1849D
Array Painting
constructive algorithms
,
greedy
,
two pointers
1700
x6954
1849C
Binary String Copying
binary search
,
brute force
,
data structures
,
hashing
,
strings
1600
x8718
1849B
Monsters
greedy
,
math
,
sortings
1000
x19477
1849A
Morning Sandwich
implementation
,
math
800
x25577
1848F
Vika and Wiki
binary search
,
bitmasks
,
combinatorics
,
divide and conquer
,
dp
,
math
2400
x1324
1848E
Vika and Stone Skipping
brute force
,
implementation
,
math
,
number theory
2600
x683
1848D
Vika and Bonuses
binary search
,
brute force
,
math
,
ternary search
2200
x2335
1848C
Vika and Price Tags
math
,
number theory
1800
x5415
1848B
Vika and the Bridge
binary search
,
data structures
,
greedy
,
implementation
,
math
,
sortings
1200
x11691
1848A
Vika and Her Friends
games
,
math
900
x15152
1847F
The Boss's Identity
binary search
,
bitmasks
,
data structures
,
dfs and similar
,
greedy
,
math
,
sortings
2500
x780
1847E
Triangle Platinum?
brute force
,
combinatorics
,
implementation
,
interactive
,
math
,
probabilities
2900
x297
1847D
Professor Higashikata
data structures
,
dsu
,
greedy
,
implementation
,
strings
1900
x3312
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