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2023 Post World Finals Online ICPC Challenge powered by Huawei
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*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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Problems
#
Name
1089K
King Kog's Reception
data structures
2400
x1081
1089J
JS Minification
greedy
,
implementation
3200
x120
1089I
Interval-Free Permutations
combinatorics
2600
x367
1089H
Harder Satisfiability
2-sat
,
dfs and similar
,
graphs
3400
x105
1089G
Guest Student
math
1500
x2850
1089F
Fractions
math
1900
x1897
1089E
Easy Chess
constructive algorithms
1700
x1960
1089D
Distance Sum
graphs
3100
x98
1089C
Cactus Search
interactive
2500
x401
1089B
Bimatching
graphs
3200
x214
1089A
Alice the Fan
dp
2200
x1112
1088F
Ehab and a weird weight formula
data structures
,
trees
2800
x488
1088E
Ehab and a component choosing problem
dp
,
greedy
,
math
,
trees
2400
x1398
1088D
Ehab and another another xor problem
bitmasks
,
constructive algorithms
,
implementation
,
interactive
2000
x2758
1088C
Ehab and a 2-operation task
constructive algorithms
,
greedy
,
math
1400
x7934
1088B
Ehab and subtraction
implementation
,
sortings
1000
x12344
1088A
Ehab and another construction problem
brute force
,
constructive algorithms
800
x16427
1086F
Forest Fires
math
3500
x224
1085G
Beautiful Matrix
combinatorics
,
data structures
,
dp
2900
x506
1085F
Rock-Paper-Scissors Champion
2500
x575
1085E
Vasya and Templates
greedy
,
implementation
,
strings
2300
x856
1085D
Minimum Diameter Tree
constructive algorithms
,
implementation
,
trees
1700
x5286
1085C
Connect Three
implementation
,
math
1600
x5363
1085B
Div Times Mod
math
1100
x9170
1085A
Right-Left Cipher
implementation
,
strings
800
x12060
1084C
The Fair Nut and String
combinatorics
,
dp
,
implementation
1500
x7518
1084B
Kvass and the Fair Nut
greedy
,
implementation
1200
x7688
1084A
The Fair Nut and Elevator
brute force
,
implementation
1000
x7810
1083F
The Fair Nut and Amusing Xor
data structures
3300
x265
1083E
The Fair Nut and Rectangles
data structures
,
dp
,
geometry
2400
x3800
1083D
The Fair Nut's getting crazy
data structures
,
implementation
3500
x226
1083C
Max Mex
data structures
,
trees
2900
x837
1083B
The Fair Nut and Strings
greedy
,
strings
2000
x1845
1083A
The Fair Nut and the Best Path
data structures
,
dp
,
trees
1800
x5195
1082G
Petya and Graph
flows
,
graphs
2400
x1924
1082F
Speed Dial
dp
,
strings
,
trees
2800
x407
1082E
Increasing Frequency
binary search
,
dp
,
greedy
2000
x4020
1082D
Maximum Diameter Graph
constructive algorithms
,
graphs
,
implementation
1800
x3544
1082C
Multi-Subject Competition
greedy
,
sortings
1600
x5504
1082B
Vova and Trophies
greedy
1600
x7406
1082A
Vasya and Book
implementation
,
math
1200
x8419
1081H
Palindromic Magic
data structures
,
hashing
,
strings
3500
x97
1081G
Mergesort Strikes Back
math
,
probabilities
3200
x339
1081F
Tricky Interactor
constructive algorithms
,
implementation
,
interactive
2600
x445
1081E
Missing Numbers
binary search
,
constructive algorithms
,
greedy
,
math
,
number theory
1900
x2532
1081D
Maximum Distance
dsu
,
graphs
,
shortest paths
,
sortings
1800
x3876
1081C
Colorful Bricks
combinatorics
,
dp
,
math
1500
x7042
1081B
Farewell Party
constructive algorithms
,
implementation
1500
x4386
1081A
Definite Game
constructive algorithms
,
math
800
x11884
1080F
Katya and Segments Sets
data structures
,
interactive
,
sortings
2400
x669
1080E
Sonya and Matrix Beauty
strings
2400
x887
1080D
Olya and magical square
constructive algorithms
,
implementation
,
math
2000
x1519
1080C
Masha and two friends
implementation
1500
x3986
1080B
Margarite and the best present
math
900
x11478
1080A
Petya and Origami
math
800
x17784
1078E
Negative Time Summation
constructive algorithms
3400
x86
1077F2
Pictures with Kittens (hard version)
data structures
,
dp
2100
x2880
1077F1
Pictures with Kittens (easy version)
dp
1900
x3982
1077E
Thematic Contests
greedy
,
sortings
1800
x4354
1077D
Cutting Out
binary search
,
sortings
1600
x8311
1077C
Good Array
1300
x15284
1077B
Disturbed People
greedy
1000
x18282
1077A
Frog Jumping
math
800
x29043
1076G
Array Game
data structures
,
games
3000
x454
1076F
Summer Practice Report
dp
,
greedy
2500
x619
1076E
Vasya and a Tree
data structures
,
trees
1900
x3611
1076D
Edge Deletion
graphs
,
greedy
,
shortest paths
1800
x4894
1076C
Meme Problem
binary search
,
math
1300
x12086
1076B
Divisor Subtraction
implementation
,
math
,
number theory
1200
x12534
1076A
Minimizing the String
greedy
,
strings
1200
x12837
1075B
Taxi drivers and Lyft
implementation
,
sortings
1200
x4184
1075A
The King's Race
implementation
,
math
800
x8327
1073G
Yet Another LCP Problem
data structures
,
string suffix structures
2600
x864
1073F
Choosing Two Paths
dfs and similar
,
dp
,
greedy
,
trees
2500
x520
1073E
Segment Sum
bitmasks
,
combinatorics
,
dp
,
math
2300
x2381
1073D
Berland Fair
binary search
,
brute force
,
data structures
,
greedy
1700
x6309
1073C
Vasya and Robot
binary search
,
two pointers
1800
x4547
1073B
Vasya and Books
implementation
,
math
1000
x10409
1073A
Diverse Substring
implementation
,
strings
1000
x14868
1071E
Rain Protection
binary search
,
geometry
3500
x90
1070M
Algoland and Berland
constructive algorithms
,
divide and conquer
,
geometry
3000
x64
1070L
Odd Federalization
constructive algorithms
2600
x280
1070K
Video Posts
implementation
1100
x4829
1070J
Streets and Avenues in Berhattan
dp
2300
x678
1070I
Privatization of Roads in Berland
flows
,
graph matchings
,
graphs
2400
x532
1070H
BerOS File Suggestion
brute force
,
implementation
1500
x3612
1070G
Monsters and Potions
brute force
,
dp
,
greedy
,
implementation
2300
x814
1070F
Debate
greedy
1500
x3569
1070E
Getting Deals Done
binary search
,
data structures
2100
x1189
1070D
Garbage Disposal
greedy
1300
x4849
1070C
Cloud Computing
data structures
,
greedy
2000
x1995
1070B
Berkomnadzor
data structures
,
greedy
2400
x469
1070A
Find a Number
dp
,
graphs
,
number theory
,
shortest paths
2200
x2259
1068C
Colored Rooks
constructive algorithms
,
graphs
1700
x3115
1068B
LCM
math
,
number theory
1200
x11087
1068A
Birthday
math
1400
x6628
1067E
Random Forest Rank
dp
,
graph matchings
,
math
,
trees
2800
x421
1067D
Computer Game
dp
,
greedy
,
math
,
probabilities
3100
x354
1067C
Knights
constructive algorithms
2600
x610
1067B
Multihedgehog
dfs and similar
,
graphs
,
shortest paths
1800
x2507
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