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2023 Post World Finals Online ICPC Challenge powered by Huawei
47:26:33
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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
898B
Proper Nutrition
brute force
,
implementation
,
number theory
1100
x9260
884B
Japanese Crosswords Strike Back
implementation
1100
x6796
883M
Quadcopter Competition
greedy
,
math
1100
x3491
877A
Alex and broken contest
implementation
,
strings
1100
x10695
869B
The Eternal Immortality
math
1100
x12900
869A
The Artful Expedient
brute force
,
implementation
1100
x9359
858A
k-rounding
brute force
,
math
,
number theory
1100
x7846
845A
Chess Tourney
implementation
,
sortings
1100
x7631
842B
Gleb And Pizza
geometry
1100
x10046
841B
Godsend
games
,
math
1100
x11961
835B
The number on the board
greedy
1100
x10901
834B
The Festive Evening
data structures
,
implementation
1100
x8511
825A
Binary Protocol
implementation
1100
x7533
813A
The Contest
implementation
1100
x5009
801A
Vicious Keyboard
brute force
1100
x7213
799A
Carrot Cakes
brute force
,
implementation
1100
x17902
797A
k-Factorization
implementation
,
math
,
number theory
1100
x13944
792A
New Bus Route
implementation
,
sortings
1100
x8741
789A
Anastasia and pebbles
implementation
,
math
1100
x9212
785B
Anton and Classes
greedy
,
sortings
1100
x10135
779B
Weird Rounding
brute force
,
greedy
1100
x10185
767A
Snacktower
data structures
,
implementation
1100
x19240
765B
Code obfuscation
greedy
,
implementation
,
strings
1100
x7018
758B
Blown Garland
brute force
,
implementation
,
number theory
1100
x10040
755B
PolandBall and Game
binary search
,
data structures
,
games
,
greedy
,
sortings
,
strings
1100
x10915
754B
Ilya and tic-tac-toe game
brute force
,
implementation
1100
x7147
735B
Urbanization
greedy
,
number theory
,
sortings
1100
x8301
733B
Parade
math
1100
x10588
731B
Coupons and Discounts
constructive algorithms
,
greedy
1100
x7858
723B
Text Document Analysis
expression parsing
,
implementation
,
strings
1100
x10052
721B
Passwords
implementation
,
math
,
sortings
,
strings
1100
x11969
719A
Vitya in the Countryside
implementation
1100
x15398
714A
Meeting of Old Friends
implementation
,
math
1100
x10676
712B
Memory and Trident
implementation
,
strings
1100
x9610
706B
Interesting drink
binary search
,
dp
,
implementation
1100
x58286
705B
Spider Man
games
,
math
1100
x9035
690A1
Collective Mindsets (easy)
1100
x2768
686B
Little Robber Girl's Zoo
constructive algorithms
,
implementation
,
sortings
1100
x7699
682A
Alyona and Numbers
constructive algorithms
,
math
,
number theory
1100
x20458
675A
Infinite Sequence
math
1100
x14748
667B
Coat of Anticubism
constructive algorithms
,
geometry
1100
x5453
667A
Pouring Rain
geometry
,
math
1100
x7780
651A
Joysticks
dp
,
greedy
,
implementation
,
math
1100
x22491
648C
Путь Робота
constructive algorithms
,
dfs and similar
,
graphs
1100
x836
638A
Home Numbers
*special problem
,
constructive algorithms
,
math
1100
x3751
635A
Orchestra
brute force
,
implementation
1100
x2819
633A
Ebony and Ivory
brute force
,
math
,
number theory
1100
x12298
630J
Divisibility
math
,
number theory
1100
x10676
630D
Hexagons!
math
1100
x9903
630C
Lucky Numbers
combinatorics
,
math
1100
x20376
629B
Far Relative’s Problem
brute force
1100
x7947
624B
Making a String
greedy
,
sortings
1100
x7845
618B
Guess the Permutation
constructive algorithms
1100
x7836
609B
The Best Gift
constructive algorithms
,
implementation
1100
x8794
602A
Two Bases
brute force
,
implementation
1100
x8360
596B
Wilbur and Array
greedy
,
implementation
1100
x10195
596A
Wilbur and Swimming Pool
geometry
,
implementation
1100
x7594
592B
The Monster and the Squirrel
math
1100
x8541
581B
Luxurious Houses
implementation
,
math
1100
x12887
570A
Elections
implementation
1100
x13736
558A
Lala Land and Apple Trees
brute force
,
implementation
,
sortings
1100
x10165
557A
Ilya and Diplomas
greedy
,
implementation
,
math
1100
x8200
556B
Case of Fake Numbers
brute force
,
implementation
1100
x7876
548A
Mike and Fax
brute force
,
implementation
,
strings
1100
x9832
545B
Equidistant String
greedy
1100
x11412
544A
Set of Strings
implementation
,
strings
1100
x7723
535B
Tavas and SaDDas
bitmasks
,
brute force
,
combinatorics
,
implementation
1100
x21608
534A
Exam
constructive algorithms
,
implementation
,
math
1100
x12018
527A
Playing with Paper
implementation
,
math
1100
x14084
525A
Vitaliy and Pie
greedy
,
hashing
,
strings
1100
x13851
522B
Photo to Remember
*special problem
,
data structures
,
dp
,
implementation
1100
x8682
519B
A and B and Compilation Errors
data structures
,
implementation
,
sortings
1100
x37672
508A
Pasha and Pixels
brute force
1100
x7791
505A
Mr. Kitayuta's Gift
brute force
,
implementation
,
strings
1100
x6591
501B
Misha and Changing Handles
data structures
,
dsu
,
strings
1100
x15600
495A
Digital Counter
implementation
1100
x8293
488A
Giga Tower
brute force
1100
x14047
483A
Counterexample
brute force
,
implementation
,
math
,
number theory
1100
x22182
478A
Initial Bet
implementation
1100
x24997
475A
Bayan Bus
implementation
1100
x4686
471A
MUH and Sticks
implementation
1100
x13324
467B
Fedor and New Game
bitmasks
,
brute force
,
constructive algorithms
,
implementation
1100
x35837
463B
Caisa and Pylons
brute force
,
implementation
,
math
1100
x25779
456A
Laptops
sortings
1100
x45363
433A
Kitahara Haruki's Gift
brute force
,
implementation
1100
x15725
427B
Prison Transfer
data structures
,
implementation
1100
x13692
405B
Domino Effect
1100
x5617
402A
Nuts
greedy
,
math
1100
x4512
389B
Fox and Cross
greedy
,
implementation
1100
x6813
382A
Ksenia and Pan Scales
greedy
,
implementation
1100
x11759
381B
Sereja and Stairs
greedy
,
implementation
,
sortings
1100
x6580
370A
Rook, Bishop and King
graphs
,
math
,
shortest paths
1100
x9862
368B
Sereja and Suffixes
data structures
,
dp
1100
x39478
366A
Dima and Guards
implementation
1100
x4479
365B
The Fibonacci Segment
implementation
1100
x14017
365A
Good Number
implementation
1100
x17401
363B
Fence
brute force
,
dp
1100
x49099
362B
Petya and Staircases
implementation
,
sortings
1100
x13496
355B
Vasya and Public Transport
greedy
,
implementation
1100
x4431
355A
Vasya and Digital Root
constructive algorithms
,
implementation
1100
x9263
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