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2023 Post World Finals Online ICPC Challenge powered by Huawei
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combine-tags-by-or
*combine tags by OR
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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Status
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Custom test
Problems
#
Name
661B
Seasons
*special problem
1900
x222
661A
Lazy Caterer Sequence
*special problem
1300
x627
660F
Bear and Bowling 4
binary search
,
data structures
,
divide and conquer
,
geometry
,
ternary search
2500
x1509
660E
Different Subsets For All Tuples
combinatorics
,
math
2300
x1230
660D
Number of Parallelograms
geometry
1900
x3829
660C
Hard Process
binary search
,
dp
,
two pointers
1600
x9053
660B
Seating On Bus
implementation
1000
x5218
660A
Co-prime Array
greedy
,
implementation
,
math
,
number theory
1200
x8522
659G
Fence Divercity
combinatorics
,
dp
,
number theory
2300
x947
659F
Polycarp and Hay
dfs and similar
,
dsu
,
graphs
,
greedy
,
sortings
2000
x1748
659E
New Reform
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
1600
x7302
659D
Bicycle Race
geometry
,
implementation
,
math
1500
x6141
659C
Tanya and Toys
greedy
,
implementation
1200
x11378
659B
Qualifying Contest
constructive algorithms
,
sortings
1300
x6176
659A
Round House
implementation
,
math
1000
x15364
658A
Bear and Reverse Radewoosh
implementation
800
x6961
656G
You're a Professional
*special problem
1900
x474
656F
Ace It!
*special problem
1900
x880
656E
Out of Controls
*special problem
2000
x716
656D
Rosetta Problem
*special problem
2100
x939
656C
Without Text
*special problem
2000
x675
656B
Scrambled
*special problem
,
implementation
1700
x1629
656A
Da Vinci Powers
*special problem
1900
x3555
653G
Move by Prime
combinatorics
,
math
,
number theory
3100
x514
653F
Paper task
data structures
,
string suffix structures
,
strings
2600
x949
653E
Bear and Forgotten Tree 2
dfs and similar
,
dsu
,
graphs
,
trees
2400
x1376
653D
Delivery Bears
binary search
,
flows
,
graphs
2200
x2332
653C
Bear and Up-Down
brute force
,
implementation
1900
x1622
653B
Bear and Compressing
brute force
,
dfs and similar
,
dp
,
strings
1300
x4887
653A
Bear and Three Balls
brute force
,
implementation
,
sortings
900
x8000
652F
Ants on a Circle
constructive algorithms
,
math
2800
x517
652E
Pursuit For Artifacts
dfs and similar
,
dsu
,
graphs
,
trees
2300
x1950
652D
Nested Segments
data structures
,
sortings
1800
x3793
652C
Foe Pairs
combinatorics
,
sortings
,
two pointers
1800
x3091
652B
z-sort
sortings
1000
x9835
652A
Gabriel and Caterpillar
implementation
,
math
1400
x4554
651B
Beautiful Paintings
greedy
,
sortings
1200
x11382
651A
Joysticks
dp
,
greedy
,
implementation
,
math
1100
x22494
650E
Clockwork Bomb
data structures
,
dfs and similar
,
dsu
,
greedy
,
trees
3200
x586
650D
Zip-line
binary search
,
data structures
,
dp
,
hashing
2600
x1191
650C
Table Compression
dfs and similar
,
dp
,
dsu
,
graphs
,
greedy
2200
x1940
650B
Image Preview
binary search
,
brute force
,
dp
,
two pointers
1900
x3308
650A
Watchmen
data structures
,
geometry
,
math
1400
x15051
649E
Автобус
binary search
,
data structures
,
greedy
,
sortings
2100
x103
649D
Дефрагментация памяти
constructive algorithms
,
greedy
,
implementation
1600
x342
649C
Печать условий
constructive algorithms
,
greedy
,
sortings
1500
x439
649B
Этажи
constructive algorithms
1400
x518
649A
Любимые числа Поликарпа
constructive algorithms
,
implementation
1000
x1095
648E
Собери число
graphs
,
shortest paths
2300
x84
648D
Собачки и миски
data structures
,
greedy
,
sortings
1900
x221
648C
Путь Робота
constructive algorithms
,
dfs and similar
,
graphs
1100
x839
648B
Собери стол
constructive algorithms
,
sortings
800
x1210
648A
Наибольший подъем
constructive algorithms
,
implementation
900
x573
645G
Armistice Area Apportionment
binary search
,
geometry
3200
x111
645F
Cowslip Collections
combinatorics
,
math
,
number theory
2500
x757
645E
Intellectual Inquiry
dp
,
greedy
,
strings
2200
x1218
645D
Robot Rapping Results Report
binary search
,
dp
,
graphs
1800
x2761
645C
Enduring Exodus
binary search
,
two pointers
1600
x3153
645B
Mischievous Mess Makers
greedy
,
math
1200
x3329
645A
Amity Assessment
brute force
,
constructive algorithms
,
implementation
1200
x3356
644C
Hostname Aliases
*special problem
,
binary search
,
data structures
,
implementation
,
sortings
,
strings
2100
x908
644B
Processing Queries
*special problem
,
constructive algorithms
,
data structures
,
two pointers
1700
x2603
644A
Parliament of Berland
*special problem
,
constructive algorithms
1000
x4378
643G
Choosing Ads
data structures
3200
x913
643F
Bears and Juice
dp
,
math
,
meet-in-the-middle
2900
x675
643E
Bear and Destroying Subtrees
dp
,
math
,
probabilities
,
trees
2700
x579
643D
Bearish Fanpages
2900
x310
643C
Levels and Regions
dp
2400
x1314
643B
Bear and Two Paths
constructive algorithms
,
graphs
1600
x3141
643A
Bear and Colors
implementation
1500
x4102
641G
Little Artem and Graph
2300
x88
641F
Little Artem and 2-SAT
3000
x184
641E
Little Artem and Time Machine
data structures
2000
x2908
641D
Little Artem and Random Variable
dp
,
implementation
,
math
,
probabilities
2400
x1047
641C
Little Artem and Dance
brute force
,
constructive algorithms
,
implementation
1800
x2841
641B
Little Artem and Matrix
implementation
1400
x3733
641A
Little Artem and Grasshopper
implementation
1000
x5806
639F
Bear and Chemistry
data structures
,
dfs and similar
,
graphs
,
trees
3300
x394
639E
Bear and Paradox
binary search
,
greedy
,
math
,
sortings
2800
x565
639D
Bear and Contribution
data structures
,
greedy
,
sortings
,
two pointers
2400
x779
639C
Bear and Polynomials
hashing
,
implementation
,
math
2200
x1187
639B
Bear and Forgotten Tree 3
constructive algorithms
,
graphs
,
trees
1600
x6392
639A
Bear and Displayed Friends
implementation
1200
x6028
638D
Three-dimensional Turtle Super Computer
brute force
,
dfs and similar
,
graphs
1800
x683
638C
Road Improvement
*special problem
,
dfs and similar
,
graphs
,
greedy
,
trees
1800
x1484
638B
Making Genome in Berland
*special problem
,
dfs and similar
,
strings
1500
x1927
638A
Home Numbers
*special problem
,
constructive algorithms
,
math
1100
x3753
637D
Running with Obstacles
*special problem
,
data structures
,
dp
,
greedy
1600
x1950
637C
Promocodes with Mistakes
*special problem
,
brute force
,
constructive algorithms
,
implementation
1400
x2409
637B
Chat Order
*special problem
,
binary search
,
constructive algorithms
,
data structures
,
sortings
1200
x15030
637A
Voting for Photos
*special problem
,
constructive algorithms
,
implementation
1000
x5308
635A
Orchestra
brute force
,
implementation
1100
x2819
634A
Island Puzzle
constructive algorithms
,
implementation
1300
x3086
633H
Fibonacci-ish II
data structures
,
implementation
3100
x566
633G
Yash And Trees
bitmasks
,
data structures
,
dfs and similar
,
math
,
number theory
2800
x715
633F
The Chocolate Spree
dfs and similar
,
dp
,
graphs
,
trees
2600
x898
633E
Startup Funding
binary search
,
constructive algorithms
,
data structures
,
probabilities
,
two pointers
2400
x567
633D
Fibonacci-ish
brute force
,
dp
,
hashing
,
implementation
,
math
2000
x2561
633C
Spy Syndrome 2
data structures
,
dp
,
hashing
,
implementation
,
sortings
,
string suffix structures
,
strings
1900
x2618
633B
A Trivial Problem
brute force
,
constructive algorithms
,
math
,
number theory
1300
x6538
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