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2023 Post World Finals Online ICPC Challenge powered by Huawei
22:37:50
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brute force
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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Problems
#
Name
120D
Three Sons
brute force
1400
x1895
38C
Blinds
brute force
1400
x2082
386B
Fly, freebies, fly!
binary search
,
brute force
,
implementation
1400
x2085
175A
Robot Bicorn Attack
brute force
,
implementation
1400
x2334
637C
Promocodes with Mistakes
*special problem
,
brute force
,
constructive algorithms
,
implementation
1400
x2409
159C
String Manipulation 1.0
*special problem
,
binary search
,
brute force
,
data structures
,
strings
1400
x2919
30A
Accounting
brute force
,
math
1400
x3311
228B
Two Tables
brute force
,
implementation
1400
x3430
665B
Shopping
brute force
1400
x3477
513B1
Permutations
brute force
1400
x3575
430B
Balls Game
brute force
,
two pointers
1400
x3628
402B
Trees in a Row
brute force
,
implementation
1400
x3687
124B
Permutations
brute force
,
combinatorics
,
implementation
1400
x3751
41B
Martian Dollar
brute force
1400
x3862
632B
Alice, Bob, Two Teams
brute force
,
constructive algorithms
1400
x3896
689A
Mike and Cellphone
brute force
,
constructive algorithms
,
implementation
1400
x5187
961C
Chessboard
bitmasks
,
brute force
,
implementation
1400
x5224
279A
Point on Spiral
brute force
,
geometry
,
implementation
1400
x5469
697B
Barnicle
brute force
,
implementation
,
math
,
strings
1400
x5664
1162B
Double Matrix
brute force
,
greedy
1400
x5760
205B
Little Elephant and Sorting
brute force
,
greedy
1400
x5934
934A
A Compatible Pair
brute force
,
games
1400
x6699
937B
Vile Grasshoppers
brute force
,
math
,
number theory
1400
x6790
911C
Three Garlands
brute force
,
constructive algorithms
1400
x6958
538A
Cutting Banner
brute force
,
implementation
1400
x7047
675B
Restoring Painting
brute force
,
constructive algorithms
,
math
1400
x7283
233B
Non-square Equation
binary search
,
brute force
,
math
1400
x7306
479B
Towers
brute force
,
constructive algorithms
,
greedy
,
implementation
,
sortings
1400
x7544
358A
Dima and Continuous Line
brute force
,
implementation
1400
x7602
962C
Make a Square
brute force
,
implementation
,
math
1400
x7744
182D
Common Divisors
brute force
,
hashing
,
implementation
,
math
,
strings
1400
x7818
475B
Strongly Connected City
brute force
,
dfs and similar
,
graphs
,
implementation
1400
x8228
548B
Mike and Fun
brute force
,
dp
,
greedy
,
implementation
1400
x8268
1130C
Connect
brute force
,
dfs and similar
,
dsu
1400
x8314
710B
Optimal Point on a Line
brute force
,
sortings
1400
x8523
1214A
Optimal Currency Exchange
brute force
,
math
1400
x8699
1895C
Torn Lucky Ticket
brute force
,
dp
,
hashing
,
implementation
,
math
1400
x10075
1904C
Array Game
binary search
,
brute force
,
data structures
,
sortings
,
two pointers
1400
x10535
1167B
Lost Numbers
brute force
,
divide and conquer
,
interactive
,
math
1400
x10642
1415C
Bouncing Ball
brute force
,
dp
,
implementation
1400
x10645
315A
Sereja and Bottles
brute force
1400
x10705
1316B
String Modification
brute force
,
constructive algorithms
,
implementation
,
sortings
,
strings
1400
x10987
1914E1
Game with Marbles (Easy Version)
brute force
,
games
,
greedy
,
sortings
1400
x11104
1893A
Anonymous Informant
brute force
,
dfs and similar
,
graphs
,
implementation
1400
x11228
1684C
Column Swapping
brute force
,
constructive algorithms
,
greedy
,
implementation
,
sortings
1400
x12013
1759D
Make It Round
brute force
,
number theory
1400
x12050
1800E1
Unforgivable Curse (easy version)
brute force
,
constructive algorithms
,
dsu
,
graphs
,
greedy
,
strings
1400
x12133
1847C
Vampiric Powers, anyone?
bitmasks
,
brute force
,
dp
,
greedy
1400
x12199
1461B
Find the Spruce
brute force
,
dp
,
implementation
1400
x12353
1833D
Flipper
brute force
,
constructive algorithms
,
greedy
1400
x12660
1705C
Mark and His Unfinished Essay
brute force
,
implementation
1400
x12964
987C
Three displays
brute force
,
dp
,
implementation
1400
x13084
1929C
Sasha and the Casino
binary search
,
brute force
,
constructive algorithms
,
games
,
greedy
,
math
1400
x13169
1559D1
Mocha and Diana (Easy Version)
brute force
,
constructive algorithms
,
dsu
,
graphs
,
greedy
,
trees
1400
x13205
1676H1
Maximum Crossings (Easy Version)
brute force
1400
x13249
1644C
Increase Subarray Sums
brute force
,
dp
,
greedy
,
implementation
1400
x13339
1932C
LR-remainders
brute force
,
data structures
,
implementation
,
math
,
two pointers
1400
x13565
1494B
Berland Crossword
bitmasks
,
brute force
,
greedy
,
implementation
1400
x13930
1748B
Diverse Substrings
brute force
,
implementation
,
strings
1400
x14203
1691C
Sum of Substrings
brute force
,
constructive algorithms
,
greedy
,
math
,
strings
1400
x15079
1714E
Add Modulo 10
brute force
,
math
,
number theory
1400
x15227
1519C
Berland Regional
brute force
,
data structures
,
greedy
,
number theory
,
sortings
1400
x15945
670D1
Magic Powder - 1
binary search
,
brute force
,
implementation
1400
x15990
1548A
Web of Lies
brute force
,
graphs
,
greedy
1400
x16013
1605C
Dominant Character
brute force
,
greedy
,
implementation
,
strings
1400
x16316
289B
Polo the Penguin and Matrix
brute force
,
dp
,
implementation
,
sortings
,
ternary search
1400
x16745
1332B
Composite Coloring
brute force
,
constructive algorithms
,
greedy
,
math
,
number theory
1400
x17032
546C
Soldier and Cards
brute force
,
dfs and similar
,
games
1400
x17064
550B
Preparing Olympiad
bitmasks
,
brute force
1400
x19455
1380C
Create The Teams
brute force
,
dp
,
greedy
,
implementation
,
sortings
1400
x19872
514B
Han Solo and Lazer Gun
brute force
,
data structures
,
geometry
,
implementation
,
math
1400
x20162
1285C
Fadi and LCM
brute force
,
math
,
number theory
1400
x21935
279B
Books
binary search
,
brute force
,
implementation
,
two pointers
1400
x47730
171D
Broken checker
*special problem
,
brute force
1300
x2510
203B
Game on Paper
brute force
,
implementation
1300
x2550
181B
Number of Triplets
binary search
,
brute force
1300
x2891
304B
Calendar
brute force
,
implementation
1300
x2918
807B
T-Shirt Hunt
brute force
,
implementation
1300
x3526
189B
Counting Rhombi
brute force
,
math
1300
x3868
146B
Lucky Mask
brute force
,
implementation
1300
x4225
161A
Dress'em in Vests!
binary search
,
brute force
,
greedy
,
two pointers
1300
x4677
526A
King of Thieves
brute force
,
implementation
1300
x4724
653B
Bear and Compressing
brute force
,
dfs and similar
,
dp
,
strings
1300
x4887
27B
Tournament
bitmasks
,
brute force
,
dfs and similar
,
greedy
1300
x5137
579B
Finding Team Member
brute force
,
implementation
,
sortings
1300
x5181
887B
Cubes for Masha
brute force
,
implementation
1300
x5529
907A
Masha and Bears
brute force
,
implementation
1300
x5557
821B
Okabe and Banana Trees
brute force
,
math
1300
x5636
158D
Ice Sculptures
*special problem
,
brute force
,
number theory
1300
x6170
485B
Valuable Resources
brute force
,
greedy
1300
x6445
633B
A Trivial Problem
brute force
,
constructive algorithms
,
math
,
number theory
1300
x6538
722A
Broken Clock
brute force
,
implementation
1300
x6574
761B
Dasha and friends
brute force
,
implementation
,
math
1300
x6801
612A
The Text Splitting
brute force
,
implementation
,
strings
1300
x7016
897B
Chtholly's request
brute force
1300
x7077
515B
Drazil and His Happy Friends
brute force
,
dsu
,
meet-in-the-middle
,
number theory
1300
x7359
798B
Mike and strings
brute force
,
dp
,
strings
1300
x8264
922B
Magic Forest
brute force
1300
x8290
416B
Art Union
brute force
,
dp
,
implementation
1300
x8518
1786B
Cake Assembly Line
brute force
,
sortings
1300
x8610
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