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2023 Post World Finals Online ICPC Challenge powered by Huawei
21:34:20
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dp
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
1842E
Tenzing and Triangle
data structures
,
dp
,
geometry
,
greedy
,
math
2300
x1533
1842C
Tenzing and Balls
dp
1500
x11640
1841C
Ranom Numbers
brute force
,
dp
,
greedy
,
math
,
strings
1800
x7295
1840F
Railguns
brute force
,
dfs and similar
,
dp
,
graphs
2200
x1700
1839E
Decreasing Game
constructive algorithms
,
dfs and similar
,
dp
,
greedy
,
interactive
2400
x1155
1839D
Ball Sorting
data structures
,
dp
,
sortings
2100
x2172
1838E
Count Supersequences
combinatorics
,
dp
,
math
2500
x1370
1835E
Old Mobile
combinatorics
,
dp
,
probabilities
3500
x202
1833G
Ksyusha and Chinchilla
constructive algorithms
,
dfs and similar
,
dp
,
dsu
,
greedy
,
implementation
,
trees
1800
x4927
1832F
Zombies
binary search
,
dp
3200
x253
1832E
Combinatorics Problem
brute force
,
combinatorics
,
dp
2200
x2054
1830F
The Third Grace
data structures
,
dp
3200
x221
1830D
Mex Tree
brute force
,
dp
,
trees
2800
x603
1830A
Copil Copac Draws Trees
dfs and similar
,
dp
,
graphs
,
trees
1400
x12420
1829H
Don't Blame Me
bitmasks
,
combinatorics
,
dp
,
math
1700
x7039
1829G
Hits Different
data structures
,
dp
,
implementation
,
math
1600
x9364
1829D
Gold Rush
brute force
,
dfs and similar
,
dp
,
implementation
1000
x24134
1827C
Palindrome Partition
binary search
,
brute force
,
data structures
,
dp
,
hashing
,
strings
2600
x1139
1827B2
Range Sorting (Hard Version)
binary search
,
data structures
,
dp
,
greedy
2400
x1764
1827B1
Range Sorting (Easy Version)
binary search
,
dp
,
dsu
,
greedy
,
trees
,
two pointers
2000
x3657
1826E
Walk the Runway
bitmasks
,
brute force
,
data structures
,
dp
,
graphs
,
implementation
,
sortings
2400
x1495
1826D
Running Miles
brute force
,
dp
,
greedy
1700
x8526
1824C
LuoTianyi and XOR-Tree
data structures
,
dfs and similar
,
dp
,
dsu
,
greedy
,
trees
2500
x1252
1823F
Random Walk
dp
,
graphs
,
math
,
probabilities
,
trees
2600
x776
1823E
Removing Graph
brute force
,
dp
,
games
,
graphs
,
math
2500
x1193
1822F
Gardening Friends
brute force
,
dfs and similar
,
dp
,
graphs
,
trees
1700
x5554
1821F
Timber
combinatorics
,
dp
,
fft
,
math
2600
x704
1821E
Rearrange Brackets
brute force
,
dp
,
greedy
,
sortings
,
strings
2100
x2241
1819F
Willy-nilly, Crack, Into Release!
data structures
,
dp
3500
x127
1819D
Misha and Apples
brute force
,
data structures
,
dp
,
two pointers
2800
x597
1819C
The Fox and the Complete Tree Traversal
constructive algorithms
,
dp
,
implementation
,
math
,
trees
2400
x1393
1815E
Bosco and Particle
dp
,
math
,
number theory
,
strings
3100
x325
1815D
XOR Counting
bitmasks
,
combinatorics
,
dp
,
math
2600
x1035
1814E
Chain Chips
data structures
,
dp
,
matrices
2300
x1246
1811G2
Vlad and the Nice Paths (hard version)
binary search
,
combinatorics
,
data structures
,
dp
,
math
,
two pointers
2200
x1613
1811G1
Vlad and the Nice Paths (easy version)
combinatorics
,
dp
,
math
2100
x1907
1811E
Living Sequence
binary search
,
dp
,
math
,
number theory
1500
x11529
1810G
The Maximum Prefix
dp
3200
x630
1809G
Prediction
combinatorics
,
dp
,
math
2800
x410
1809E
Two Tanks
binary search
,
dp
,
implementation
,
math
2400
x789
1808E3
Minibuses on Venus (hard version)
brute force
,
combinatorics
,
dp
,
math
2800
x417
1808E2
Minibuses on Venus (medium version)
combinatorics
,
divide and conquer
,
dp
,
matrices
2500
x645
1808E1
Minibuses on Venus (easy version)
combinatorics
,
divide and conquer
,
dp
2200
x1250
1808C
Unlucky Numbers
brute force
,
dp
,
greedy
,
implementation
1900
x3578
1807G2
Subsequence Addition (Hard Version)
bitmasks
,
dp
,
greedy
,
implementation
,
sortings
1100
x17649
1807G1
Subsequence Addition (Easy Version)
brute force
,
data structures
,
dp
,
greedy
,
implementation
,
sortings
1100
x17810
1806D
DSU Master
combinatorics
,
dp
,
dsu
,
math
2500
x846
1805E
There Should Be a Lot of Maximums
brute force
,
data structures
,
dfs and similar
,
dp
,
trees
,
two pointers
2300
x1522
1805D
A Wide, Wide Graph
dfs and similar
,
dp
,
graphs
,
greedy
,
trees
1800
x6034
1804H
Code Lock
bitmasks
,
dp
3300
x169
1804E
Routing
bitmasks
,
brute force
,
dfs and similar
,
dp
,
graphs
2400
x1357
1804D
Accommodation
brute force
,
dp
,
greedy
,
implementation
2000
x4414
1801F
Another n-dimensional chocolate bar
dp
,
math
,
meet-in-the-middle
,
number theory
2700
x544
1801D
The way home
binary search
,
data structures
,
dp
,
graphs
,
greedy
,
shortest paths
,
sortings
2100
x2037
1801C
Music Festival
binary search
,
data structures
,
dp
,
greedy
,
sortings
1900
x3220
1799H
Tree Cutting
bitmasks
,
dfs and similar
,
dp
3200
x271
1799G
Count Voting
combinatorics
,
dp
,
math
2600
x696
1799F
Halve or Subtract
binary search
,
brute force
,
dp
,
greedy
,
sortings
2700
x767
1799D2
Hot Start Up (hard version)
data structures
,
dp
2100
x2270
1799D1
Hot Start Up (easy version)
dp
1900
x4067
1798F
Gifts from Grandfather Ahmed
dp
,
math
,
number theory
2500
x467
1798E
Multitest Generator
brute force
,
dp
2300
x1497
1797D
Li Hua and Tree
brute force
,
data structures
,
dfs and similar
,
dp
,
implementation
,
trees
1900
x3692
1796E
Colored Subgraphs
dfs and similar
,
dp
,
games
,
greedy
,
trees
2500
x691
1796D
Maximum Subarray
data structures
,
dp
,
greedy
,
two pointers
2000
x3878
1795E
Explosions?
binary search
,
data structures
,
dp
,
greedy
,
math
2200
x1913
1794E
Labeling the Tree with Distances
data structures
,
dp
,
greedy
,
hashing
,
implementation
,
trees
2400
x1004
1794D
Counting Factorizations
combinatorics
,
divide and conquer
,
dp
,
math
,
number theory
1900
x3341
1793E
Velepin and Marketing
binary search
,
data structures
,
dp
,
greedy
,
sortings
,
two pointers
2600
x929
1793D
Moscow Gorillas
binary search
,
dp
,
greedy
,
implementation
,
math
,
two pointers
1800
x5752
1792F2
Graph Coloring (hard version)
brute force
,
combinatorics
,
divide and conquer
,
dp
,
fft
,
graphs
2900
x373
1792F1
Graph Coloring (easy version)
combinatorics
,
dp
,
graphs
2700
x665
1792E
Divisors and Table
brute force
,
dfs and similar
,
dp
,
number theory
2400
x1302
1791E
Negatives and Positives
dp
,
greedy
,
sortings
1100
x25523
1789F
Serval and Brain Power
bitmasks
,
brute force
,
dp
,
greedy
,
implementation
,
strings
2700
x515
1789E
Serval and Music Game
brute force
,
dp
,
implementation
,
math
,
number theory
2500
x759
1789C
Serval and Toxel's Arrays
combinatorics
,
dp
,
implementation
,
math
1500
x8056
1788E
Sum Over Zero
data structures
,
dfs and similar
,
dp
2200
x2469
1787H
Codeforces Scoreboard
binary search
,
data structures
,
dp
,
geometry
3300
x197
1787C
Remove the Bracket
dp
,
greedy
,
math
1600
x6699
1784E
Infinite Game
brute force
,
combinatorics
,
dp
,
games
,
probabilities
3100
x301
1784D
Wooden Spoon
combinatorics
,
dp
2400
x950
1783D
Different Arrays
brute force
,
dp
,
implementation
2000
x4169
1781F
Bracket Insertion
combinatorics
,
dp
,
math
,
trees
2700
x730
1780F
Three Chairs
bitmasks
,
brute force
,
combinatorics
,
data structures
,
dp
,
number theory
,
sortings
2300
x1368
1779F
Xorcerer's Stones
bitmasks
,
constructive algorithms
,
dp
,
trees
2500
x1217
1779D
Boris and His Amazing Haircut
constructive algorithms
,
data structures
,
dp
,
dsu
,
greedy
,
sortings
1700
x7488
1778F
Maximizing Root
dfs and similar
,
dp
,
graphs
,
math
,
number theory
,
trees
2600
x597
1778D
Flexible String Revisit
combinatorics
,
dp
,
math
,
probabilities
2100
x2550
1777D
Score of a Tree
bitmasks
,
combinatorics
,
dfs and similar
,
dp
,
math
,
probabilities
,
trees
1900
x3209
1776M
Parmigiana With Seafood
binary search
,
dp
,
greedy
,
trees
3000
x344
1776K
Uniform Chemistry
dp
,
math
3200
x64
1776E
Crossing the Railways
data structures
,
dp
3500
x62
1776B
Vittorio Plays with LEGO Bricks
dp
,
geometry
2200
x1242
1775F
Laboratory on Pluto
constructive algorithms
,
dp
,
greedy
,
math
2500
x739
1774G
Segment Covering
brute force
,
combinatorics
,
constructive algorithms
,
data structures
,
dp
,
trees
3200
x366
1774E
Two Chess Pieces
dfs and similar
,
dp
,
greedy
,
trees
1900
x3307
1774C
Ice and Fire
constructive algorithms
,
dp
,
greedy
1300
x11546
1773L
Lisa's Sequences
dp
3500
x28
1773G
Game of Questions
bitmasks
,
combinatorics
,
dp
,
fft
,
math
,
probabilities
2800
x319
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