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2023 Post World Finals Online ICPC Challenge powered by Huawei
05:53:32
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Difficulty:
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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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Name
793D
Presents in Bankopolis
dp
,
graphs
,
shortest paths
2100
x1576
231E
Cactus
data structures
,
dfs and similar
,
dp
,
graphs
,
trees
2100
x1536
56D
Changing a String
dp
2100
x1520
1866G
Grouped Carriages
binary search
,
data structures
,
dp
,
flows
,
greedy
2100
x1502
439E
Devu and Birthday Celebration
combinatorics
,
dp
,
math
2100
x1474
1032E
The Unbearable Lightness of Weights
dp
,
math
2100
x1473
313D
Ilya and Roads
dp
2100
x1418
821E
Okabe and El Psy Kongroo
dp
,
matrices
2100
x1411
552E
Vanya and Brackets
brute force
,
dp
,
expression parsing
,
greedy
,
implementation
,
strings
2100
x1409
282D
Yet Another Number Game
dp
,
games
2100
x1377
587B
Duff in Beach
dp
2100
x1376
1387B1
Village (Minimum)
*special problem
,
dp
,
greedy
,
trees
2100
x1316
1666J
Job Lookup
constructive algorithms
,
dp
,
shortest paths
,
trees
2100
x1292
111C
Petya and Spiders
bitmasks
,
dp
,
dsu
2100
x1270
1575L
Longest Array Deconstruction
data structures
,
divide and conquer
,
dp
,
sortings
2100
x1268
283C
Coin Troubles
dp
2100
x1230
1163D
Mysterious Code
dp
,
strings
2100
x1218
1044C
Optimal Polygon Perimeter
dp
,
geometry
2100
x1203
900E
Maximum Questions
data structures
,
dp
,
strings
2100
x1028
238C
World Eater Brothers
dfs and similar
,
dp
,
greedy
,
trees
2100
x1019
575F
Bulbo
dp
,
greedy
2100
x983
77C
Beavermuncher-0xFF
dfs and similar
,
dp
,
dsu
,
greedy
,
trees
2100
x977
954F
Runner's Problem
dp
,
matrices
,
sortings
2100
x975
859D
Third Month Insanity
dp
,
probabilities
,
trees
2100
x848
852E
Casinos and travel
dp
2100
x808
542F
Quest
dp
,
greedy
2100
x734
1387A
Graph
*special problem
,
binary search
,
dfs and similar
,
dp
,
math
,
ternary search
2100
x670
1906J
Count BFS Graph
combinatorics
,
dp
2100
x630
132D
Constants in the language of Shakespeare
constructive algorithms
,
dp
,
greedy
2100
x603
50D
Bombing
binary search
,
dp
,
probabilities
2100
x596
802K
Send the Fool Further! (medium)
dp
,
trees
2100
x578
39C
Moon Craters
dp
,
sortings
2100
x569
48E
Ivan the Fool VS Gorynych the Dragon
dp
,
games
,
graphs
2100
x560
215E
Periodical Numbers
combinatorics
,
dp
,
number theory
2100
x538
54D
Writing a Song
brute force
,
dp
,
strings
2100
x506
309B
Context Advertising
dp
,
two pointers
2100
x498
690D3
The Wall (hard)
dp
2100
x489
342D
Xenia and Dominoes
bitmasks
,
dfs and similar
,
dp
2100
x487
254E
Dormitory
dp
,
implementation
2100
x484
386D
Game with Points
dp
,
graphs
,
implementation
,
shortest paths
2100
x411
212C
Cowboys
combinatorics
,
dp
,
math
2100
x376
38F
Smart Boy
dp
,
games
,
strings
2100
x375
1910E
Maximum Sum Subarrays
*special problem
,
dp
2100
x168
1431G
Number Deletion Game
*special problem
,
dp
,
games
,
greedy
2100
x137
165E
Compatible Numbers
bitmasks
,
brute force
,
dfs and similar
,
dp
2200
x6189
559C
Gerald and Giant Chess
combinatorics
,
dp
,
math
,
number theory
2200
x6141
628D
Magic Numbers
dp
2200
x5372
1400E
Clear the Multiset
data structures
,
divide and conquer
,
dp
,
greedy
2200
x5012
1407D
Discrete Centrifugal Jumps
data structures
,
dp
,
graphs
2200
x4623
833B
The Bakery
binary search
,
data structures
,
divide and conquer
,
dp
,
two pointers
2200
x4489
11D
A Simple Task
bitmasks
,
dp
,
graphs
2200
x4440
13C
Sequence
dp
,
sortings
2200
x4115
1474D
Cleaning
data structures
,
dp
,
greedy
,
math
2200
x3870
1156D
0-1-Tree
dfs and similar
,
divide and conquer
,
dp
,
dsu
,
trees
2200
x3679
1467D
Sum of Paths
combinatorics
,
dp
,
math
2200
x3539
1515E
Phoenix and Computers
combinatorics
,
dp
,
math
2200
x3363
1336C
Kaavi and Magic Spell
dp
,
strings
2200
x3332
1854B
Earn or Unlock
bitmasks
,
brute force
,
dp
2200
x3330
1437E
Make It Increasing
binary search
,
constructive algorithms
,
data structures
,
dp
,
implementation
2200
x3323
1110D
Jongmah
dp
2200
x3260
1503C
Travelling Salesman Problem
binary search
,
data structures
,
dp
,
greedy
,
shortest paths
,
sortings
,
two pointers
2200
x3197
1175E
Minimal Segment Cover
data structures
,
dfs and similar
,
divide and conquer
,
dp
,
greedy
,
implementation
,
trees
2200
x3194
1353F
Decreasing Heights
brute force
,
dp
2200
x3054
1215E
Marbles
bitmasks
,
dp
2200
x2915
1630C
Paint the Middle
dp
,
greedy
,
sortings
,
two pointers
2200
x2830
1486E
Paired Payment
binary search
,
brute force
,
constructive algorithms
,
dp
,
flows
,
graphs
,
shortest paths
2200
x2792
1552F
Telepanting
binary search
,
data structures
,
dp
,
sortings
2200
x2780
1860D
Balanced String
dp
2200
x2779
768D
Jon and Orbs
dp
,
math
,
probabilities
2200
x2766
1238E
Keyboard Purchase
bitmasks
,
dp
2200
x2737
1373E
Sum of Digits
brute force
,
constructive algorithms
,
dp
,
greedy
2200
x2696
1858D
Trees and Segments
brute force
,
data structures
,
dp
,
greedy
,
two pointers
2200
x2689
839D
Winter is here
combinatorics
,
dp
,
math
,
number theory
2200
x2683
1535E
Gold Transfer
binary search
,
data structures
,
dp
,
greedy
,
interactive
,
trees
2200
x2631
1253E
Antenna Coverage
data structures
,
dp
,
greedy
,
sortings
2200
x2619
1303E
Erase Subsequences
dp
,
strings
2200
x2567
1097D
Makoto and a Blackboard
dp
,
math
,
number theory
,
probabilities
2200
x2560
1220E
Tourism
dfs and similar
,
dp
,
dsu
,
graphs
,
greedy
,
trees
2200
x2542
1542D
Priority Queue
combinatorics
,
dp
,
implementation
,
math
,
ternary search
2200
x2530
1556E
Equilibrium
data structures
,
dp
,
greedy
2200
x2510
1788E
Sum Over Zero
data structures
,
dfs and similar
,
dp
2200
x2469
1557D
Ezzat and Grid
data structures
,
dp
,
greedy
2200
x2466
1384B2
Koa and the Beach (Hard Version)
constructive algorithms
,
dp
,
greedy
,
implementation
2200
x2458
1234F
Yet Another Substring Reverse
bitmasks
,
dp
2200
x2364
592D
Super M
dfs and similar
,
dp
,
graphs
,
trees
2200
x2354
1168C
And Reachability
bitmasks
,
dp
2200
x2324
1646E
Power Board
brute force
,
dp
,
math
,
number theory
2200
x2297
1579G
Minimal Coverage
dp
2200
x2268
1070A
Find a Number
dp
,
graphs
,
number theory
,
shortest paths
2200
x2259
1498D
Bananas in a Microwave
dfs and similar
,
dp
,
graphs
,
implementation
2200
x2248
908D
New Year and Arbitrary Arrangement
dp
,
math
,
probabilities
2200
x2244
1627E
Not Escaping
data structures
,
dp
,
implementation
,
shortest paths
,
two pointers
2200
x2229
1704E
Count Seconds
brute force
,
constructive algorithms
,
dp
,
graphs
,
implementation
,
math
2200
x2217
1559E
Mocha and Stars
combinatorics
,
dp
,
fft
,
math
,
number theory
2200
x2214
679B
Bear and Tower of Cubes
binary search
,
dp
,
greedy
2200
x2113
1695D1
Tree Queries (Easy Version)
brute force
,
constructive algorithms
,
dfs and similar
,
dp
,
greedy
,
trees
2200
x2088
427D
Match & Catch
dp
,
string suffix structures
,
strings
2200
x2088
1249F
Maximum Weight Subset
dp
,
trees
2200
x2087
1946E
Girl Permutation
combinatorics
,
dp
,
math
,
number theory
2200
x2066
1832E
Combinatorics Problem
brute force
,
combinatorics
,
dp
2200
x2054
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