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2023 Post World Finals Online ICPC Challenge powered by Huawei
22:49:32
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binary search
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
715B
Complete The Graph
binary search
,
constructive algorithms
,
graphs
,
shortest paths
2300
x2658
380A
Sereja and Prefixes
binary search
,
brute force
1600
x2652
1862G
The Great Equalizer
binary search
,
data structures
,
math
,
sortings
2000
x2646
1535E
Gold Transfer
binary search
,
data structures
,
dp
,
greedy
,
interactive
,
trees
2200
x2631
609D
Gadgets for dollars and pounds
binary search
,
greedy
,
two pointers
2000
x2559
1108F
MST Unification
binary search
,
dsu
,
graphs
,
greedy
2100
x2555
1059D
Nature Reserve
binary search
,
geometry
,
ternary search
2200
x2542
1081E
Missing Numbers
binary search
,
constructive algorithms
,
greedy
,
math
,
number theory
1900
x2532
1167E
Range Deleting
binary search
,
combinatorics
,
data structures
,
two pointers
2100
x2527
749D
Leaving Auction
binary search
,
data structures
2000
x2524
335A
Banana
binary search
,
constructive algorithms
,
greedy
1400
x2513
1848D
Vika and Bonuses
binary search
,
brute force
,
math
,
ternary search
2200
x2509
101B
Buses
binary search
,
data structures
,
dp
1700
x2493
1404C
Fixed Point Removal
binary search
,
constructive algorithms
,
data structures
,
greedy
,
two pointers
2300
x2491
1029F
Multicolored Markers
binary search
,
brute force
,
math
,
number theory
2000
x2470
955C
Sad powers
binary search
,
math
,
number theory
2100
x2461
1732C2
Sheikh (Hard Version)
binary search
,
bitmasks
,
brute force
,
greedy
,
implementation
,
two pointers
2100
x2456
232A
Cycles
binary search
,
constructive algorithms
,
graphs
,
greedy
1600
x2449
373B
Making Sequences is Fun
binary search
,
implementation
,
math
1600
x2434
1936B
Pinball
binary search
,
data structures
,
implementation
,
math
,
two pointers
2000
x2408
367B
Sereja ans Anagrams
binary search
,
data structures
1900
x2406
1177B
Digits Sequence (Hard Edition)
binary search
,
divide and conquer
,
implementation
1800
x2396
817F
MEX Queries
binary search
,
data structures
,
trees
2300
x2396
1942D
Learning to Paint
binary search
,
data structures
,
dfs and similar
,
dp
,
greedy
,
implementation
,
sortings
2100
x2390
1251E2
Voting (Hard Version)
binary search
,
data structures
,
greedy
2400
x2375
534D
Handshakes
binary search
,
constructive algorithms
,
data structures
,
greedy
1900
x2369
762C
Two strings
binary search
,
hashing
,
strings
,
two pointers
2100
x2360
1706E
Qpwoeirut and Vertices
binary search
,
data structures
,
dfs and similar
,
divide and conquer
,
dsu
,
greedy
,
trees
2300
x2357
1710B
Rain
binary search
,
brute force
,
data structures
,
geometry
,
greedy
,
implementation
,
math
2100
x2350
846D
Monitor
binary search
,
data structures
1900
x2349
653D
Delivery Bears
binary search
,
flows
,
graphs
2200
x2332
1641C
Anonymity Is Important
binary search
,
brute force
,
data structures
,
dsu
,
greedy
,
sortings
2200
x2323
1968G1
Division + LCP (easy version)
binary search
,
data structures
,
dp
,
hashing
,
string suffix structures
,
strings
x2309
1371E2
Asterism (Hard Version)
binary search
,
combinatorics
,
dp
,
math
,
number theory
,
sortings
2300
x2293
1100E
Andrew and Taxi
binary search
,
dfs and similar
,
graphs
2200
x2287
1039B
Subway Pursuit
binary search
,
interactive
,
probabilities
2100
x2276
813E
Army Creation
binary search
,
data structures
2200
x2270
1619G
Unusual Minesweeper
binary search
,
dfs and similar
,
dsu
,
greedy
,
sortings
2000
x2266
985D
Sand Fortress
binary search
,
constructive algorithms
,
math
2100
x2253
468C
Hack it!
binary search
,
constructive algorithms
,
math
2500
x2242
1741F
Multi-Colored Segments
binary search
,
data structures
,
math
,
sortings
2000
x2223
1399E2
Weights Division (hard version)
binary search
,
dfs and similar
,
greedy
,
sortings
,
trees
,
two pointers
2200
x2211
56E
Domino Principle
binary search
,
data structures
,
sortings
2200
x2211
767D
Cartons of milk
binary search
,
data structures
,
greedy
,
sortings
,
two pointers
2100
x2193
1141G
Privatization of Roads in Treeland
binary search
,
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
,
trees
1900
x2185
925B
Resource Distribution
binary search
,
implementation
,
sortings
1700
x2176
1398E
Two Types of Spells
binary search
,
data structures
,
greedy
,
implementation
,
math
,
sortings
2200
x2175
613B
Skills
binary search
,
brute force
,
dp
,
greedy
,
sortings
,
two pointers
1900
x2171
484E
Sign on Fence
binary search
,
constructive algorithms
,
data structures
2500
x2164
1808D
Petya, Petya, Petr, and Palindromes
binary search
,
brute force
,
data structures
,
two pointers
2100
x2162
1428F
Fruit Sequences
binary search
,
data structures
,
divide and conquer
,
dp
,
two pointers
2400
x2162
1592D
Hemose in ICPC ?
binary search
,
dfs and similar
,
implementation
,
interactive
,
math
,
number theory
,
trees
2300
x2157
1881G
Anya and the Mysterious String
binary search
,
data structures
2000
x2156
1201D
Treasure Hunting
binary search
,
dp
,
greedy
,
implementation
2100
x2153
754D
Fedor and coupons
binary search
,
data structures
,
greedy
,
sortings
2100
x2135
222D
Olympiad
binary search
,
greedy
,
sortings
,
two pointers
1900
x2127
1166D
Cute Sequences
binary search
,
brute force
,
greedy
,
math
2200
x2125
1436E
Complicated Computations
binary search
,
data structures
,
two pointers
2400
x2113
679B
Bear and Tower of Cubes
binary search
,
dp
,
greedy
2200
x2113
301B
Yaroslav and Time
binary search
,
graphs
,
shortest paths
2100
x2109
431D
Random Task
binary search
,
bitmasks
,
combinatorics
,
dp
,
math
2100
x2104
553B
Kyoya and Permutation
binary search
,
combinatorics
,
constructive algorithms
,
greedy
,
implementation
,
math
1900
x2094
1672E
notepad.exe
binary search
,
constructive algorithms
,
greedy
,
interactive
2200
x2091
386B
Fly, freebies, fly!
binary search
,
brute force
,
implementation
1400
x2085
1527E
Partition Game
binary search
,
data structures
,
divide and conquer
,
dp
2500
x2081
1837F
Editorial for Two
binary search
,
data structures
,
greedy
,
implementation
2400
x2066
1834E
MEX of LCM
binary search
,
data structures
,
implementation
,
math
,
number theory
2300
x2051
896B
Ithea Plays With Chtholly
binary search
,
constructive algorithms
,
games
,
greedy
,
interactive
2000
x2049
1712E1
LCM Sum (easy version)
binary search
,
brute force
,
combinatorics
,
math
,
number theory
,
two pointers
2300
x2038
1801D
The way home
binary search
,
data structures
,
dp
,
graphs
,
greedy
,
shortest paths
,
sortings
2100
x2037
369E
Valera and Queries
binary search
,
data structures
2200
x2030
1165F2
Microtransactions (hard version)
binary search
,
greedy
,
implementation
2000
x2021
1181D
Irrigation
binary search
,
data structures
,
implementation
,
sortings
,
trees
,
two pointers
2200
x2019
21C
Stripe 2
binary search
,
dp
,
sortings
2000
x2013
540E
Infinite Inversions
binary search
,
data structures
,
implementation
,
sortings
,
trees
2100
x2006
1500B
Two chandeliers
binary search
,
brute force
,
chinese remainder theorem
,
math
,
number theory
2200
x1984
524C
The Art of Dealing with ATM
binary search
,
sortings
1900
x1979
1705E
Mark and Professor Koro
binary search
,
bitmasks
,
brute force
,
combinatorics
,
data structures
,
greedy
2300
x1977
875D
High Cry
binary search
,
bitmasks
,
combinatorics
,
data structures
,
divide and conquer
2200
x1977
377B
Preparing for the Contest
binary search
,
data structures
,
greedy
,
sortings
1900
x1974
1453E
Dog Snacks
binary search
,
dfs and similar
,
dp
,
greedy
,
trees
2300
x1968
1179C
Serge and Dining Room
binary search
,
data structures
,
graph matchings
,
greedy
,
implementation
,
math
,
trees
2200
x1950
1392F
Omkar and Landslide
binary search
,
constructive algorithms
,
data structures
,
greedy
,
math
2400
x1940
255D
Mr. Bender and Square
binary search
,
implementation
,
math
1800
x1930
1795E
Explosions?
binary search
,
data structures
,
dp
,
greedy
,
math
2200
x1913
85D
Sum of Medians
binary search
,
brute force
,
data structures
,
implementation
2300
x1906
1102F
Elongated Matrix
binary search
,
bitmasks
,
brute force
,
dp
,
graphs
2000
x1903
954G
Castle Defense
binary search
,
data structures
,
greedy
,
two pointers
2000
x1894
1019B
The hat
binary search
,
interactive
2000
x1891
883I
Photo Processing
binary search
,
dp
1900
x1891
818E
Card Game Again
binary search
,
data structures
,
number theory
,
two pointers
1900
x1872
333D
Characteristics of Rectangles
binary search
,
bitmasks
,
brute force
,
implementation
,
sortings
2100
x1846
954E
Water Taps
binary search
,
greedy
,
sortings
2000
x1830
1132D
Stressful Training
binary search
,
greedy
2300
x1814
51C
Three Base Stations
binary search
,
greedy
1800
x1803
1832D2
Red-Blue Operations (Hard Version)
binary search
,
constructive algorithms
,
greedy
,
implementation
,
math
2400
x1788
1225E
Rock Is Push
binary search
,
dp
2200
x1785
549H
Degenerate Matrix
binary search
,
math
2100
x1785
1550D
Excellent Arrays
binary search
,
combinatorics
,
constructive algorithms
,
implementation
,
math
,
sortings
,
two pointers
2300
x1779
1423B
Valuable Paper
binary search
,
flows
,
graph matchings
,
graphs
1900
x1766
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