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2023 Post World Finals Online ICPC Challenge powered by Huawei
26:54:38
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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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Custom test
Problems
#
Name
1446A
Knapsack
constructive algorithms
,
greedy
,
sortings
1300
x14894
1249C1
Good Numbers (easy version)
brute force
,
greedy
,
implementation
1300
x15069
1733C
Parity Shuffle Sorting
constructive algorithms
,
sortings
1300
x15087
1260B
Obtain Two Zeroes
binary search
,
math
1300
x15095
1943A
MEX Game 1
games
,
greedy
1300
x15138
1615B
And It's Non-Zero
bitmasks
,
greedy
,
math
1300
x15193
1326C
Permutation Partitions
combinatorics
,
greedy
,
math
1300
x15241
1077C
Good Array
1300
x15283
1846E1
Rudolf and Snowflakes (simple version)
brute force
,
implementation
,
math
1300
x15318
1443B
Saving the City
dp
,
greedy
,
math
,
sortings
1300
x15480
1311C
Perform the Combo
brute force
1300
x15586
1555B
Two Tables
brute force
1300
x15613
1693A
Directional Increase
greedy
1300
x15631
1931D
Divisible Pairs
combinatorics
,
math
,
number theory
1300
x15737
570B
Simple Game
constructive algorithms
,
games
,
greedy
,
implementation
,
math
1300
x15763
1612C
Chat Ban
binary search
,
math
1300
x15777
1676F
Longest Strike
data structures
,
greedy
,
implementation
,
sortings
,
two pointers
1300
x15800
352B
Jeff and Periods
implementation
,
sortings
1300
x15809
862B
Mahmoud and Ehab and the bipartiteness
dfs and similar
,
graphs
,
trees
1300
x15956
1862D
Ice Cream Balls
binary search
,
combinatorics
,
constructive algorithms
,
math
1300
x15982
1547D
Co-growing Sequence
bitmasks
,
constructive algorithms
,
greedy
1300
x16013
1498B
Box Fitting
binary search
,
bitmasks
,
data structures
,
greedy
1300
x16075
1603A
Di-visible Confusion
constructive algorithms
,
math
,
number theory
1300
x16095
1829F
Forever Winter
dfs and similar
,
graphs
,
math
1300
x16125
1669H
Maximal AND
bitmasks
,
greedy
,
math
1300
x16196
1249B2
Books Exchange (hard version)
dfs and similar
,
dsu
,
math
1300
x16244
1627B
Not Sitting
games
,
greedy
,
sortings
1300
x16261
1418B
Negative Prefixes
greedy
,
sortings
1300
x16280
573A
Bear and Poker
implementation
,
math
,
number theory
1300
x16286
330B
Road Construction
constructive algorithms
,
graphs
1300
x16354
1607D
Blue-Red Permutation
greedy
,
math
,
sortings
1300
x16387
1788C
Matching Numbers
constructive algorithms
,
greedy
,
math
1300
x16450
1234B2
Social Network (hard version)
data structures
,
implementation
1300
x16450
1574C
Slay the Dragon
binary search
,
greedy
,
sortings
,
ternary search
1300
x16518
251A
Points on Line
binary search
,
combinatorics
,
two pointers
1300
x16576
1407B
Big Vova
brute force
,
greedy
,
math
,
number theory
1300
x16674
1922C
Closest Cities
greedy
,
implementation
,
math
1300
x16800
486B
OR in Matrix
greedy
,
hashing
,
implementation
1300
x16923
1661B
Getting Zero
bitmasks
,
brute force
,
dfs and similar
,
dp
,
graphs
,
greedy
,
shortest paths
1300
x16959
1420C1
Pokémon Army (easy version)
constructive algorithms
,
dp
,
greedy
1300
x17006
1850F
We Were Both Children
brute force
,
implementation
,
math
,
number theory
1300
x17076
1955C
Inhabitant of the Deep Sea
greedy
,
implementation
,
math
1300
x17287
1466C
Canine poetry
dp
,
greedy
,
strings
1300
x17296
617B
Chocolate
combinatorics
1300
x17310
1560D
Make a Power of Two
greedy
,
math
,
strings
1300
x17632
1857D
Strong Vertices
math
,
sortings
,
trees
1300
x17652
1698C
3SUM Closure
brute force
,
data structures
1300
x17877
1373C
Pluses and Minuses
math
1300
x17926
1433E
Two Round Dances
combinatorics
,
math
1300
x18014
1703F
Yet Another Problem About Pairs Satisfying an Inequality
binary search
,
data structures
,
dp
,
greedy
,
sortings
1300
x18118
1927D
Find the Different Ones!
binary search
,
brute force
,
data structures
,
dp
,
dsu
,
greedy
,
two pointers
1300
x18168
1618D
Array and Operations
dp
,
greedy
,
math
1300
x18265
1037C
Equalize
dp
,
greedy
,
strings
1300
x18298
1915E
Romantic Glasses
data structures
,
greedy
,
math
1300
x18344
1364B
Most socially-distanced subsequence
greedy
,
two pointers
1300
x18418
1660C
Get an Even String
dp
,
greedy
,
strings
1300
x18739
1341B
Nastya and Door
greedy
,
implementation
1300
x19008
519C
A and B and Team Training
greedy
,
implementation
,
math
,
number theory
1300
x19327
1476B
Inflation
binary search
,
brute force
,
greedy
,
math
1300
x19468
1203C
Common Divisors
implementation
,
math
1300
x19559
1366B
Shuffle
math
,
two pointers
1300
x19583
1454D
Number into Sequence
constructive algorithms
,
math
,
number theory
1300
x19719
1381A1
Prefix Flip (Easy Version)
constructive algorithms
,
data structures
,
strings
1300
x19836
1371C
A Cookie for You
greedy
,
implementation
,
math
1300
x20163
1521B
Nastia and a Good Array
constructive algorithms
,
math
,
number theory
1300
x20739
1555C
Coin Rows
brute force
,
constructive algorithms
,
dp
,
implementation
1300
x20848
1285B
Just Eat It!
dp
,
greedy
,
implementation
1300
x20981
1470A
Strange Birthday Party
binary search
,
dp
,
greedy
,
sortings
,
two pointers
1300
x21222
1692F
3SUM
brute force
,
math
1300
x21244
893C
Rumor
dfs and similar
,
graphs
,
greedy
1300
x21613
508B
Anton and currency you all know
greedy
,
math
,
strings
1300
x22052
1367C
Social Distance
constructive algorithms
,
greedy
,
math
1300
x22586
1401C
Mere Array
constructive algorithms
,
math
,
number theory
,
sortings
1300
x23421
545D
Queue
greedy
,
implementation
,
sortings
1300
x24054
1360E
Polygon
dp
,
graphs
,
implementation
,
shortest paths
1300
x24395
1352D
Alice, Bob and Candies
implementation
1300
x24791
450B
Jzzhu and Sequences
implementation
,
math
1300
x25318
1365B
Trouble Sort
constructive algorithms
,
implementation
1300
x26003
1372B
Omkar and Last Class of Math
greedy
,
math
,
number theory
1300
x26118
1335D
Anti-Sudoku
constructive algorithms
,
implementation
1300
x26576
1538C
Number of Pairs
binary search
,
data structures
,
math
,
two pointers
1300
x26966
276B
Little Girl and Game
games
,
greedy
1300
x27213
600B
Queries about less or equal elements
binary search
,
data structures
,
sortings
,
two pointers
1300
x27378
1328B
K-th Beautiful String
binary search
,
brute force
,
combinatorics
,
implementation
,
math
1300
x28087
476B
Dreamoon and WiFi
bitmasks
,
brute force
,
combinatorics
,
dp
,
math
,
probabilities
1300
x29010
1360D
Buying Shovels
math
,
number theory
1300
x30742
1294C
Product of Three Numbers
greedy
,
math
,
number theory
1300
x32259
478B
Random Teams
combinatorics
,
constructive algorithms
,
greedy
,
math
1300
x35230
459B
Pashmak and Flowers
combinatorics
,
implementation
,
sortings
1300
x38442
451B
Sort the Array
implementation
,
sortings
1300
x42998
189A
Cut Ribbon
brute force
,
dp
1300
x62423
230B
T-primes
binary search
,
implementation
,
math
,
number theory
1300
x69791
4C
Registration System
data structures
,
hashing
,
implementation
1300
x77108
25A
IQ test
brute force
1300
x81037
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