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Custom test
Problems
#
Name
1777F
Comfortably Numb
bitmasks
,
data structures
,
divide and conquer
,
strings
,
trees
2400
x823
1326F1
Wise Men (Easy Version)
bitmasks
,
brute force
,
dp
,
meet-in-the-middle
2600
x814
385D
Bear and Floodlight
bitmasks
,
dp
,
geometry
2200
x798
1788F
XOR, Tree, and Queries
bitmasks
,
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
implementation
,
trees
2500
x796
1616H
Keep XOR Low
bitmasks
,
combinatorics
,
data structures
,
divide and conquer
,
dp
,
math
3000
x796
21D
Traveling Graph
bitmasks
,
graph matchings
,
graphs
2400
x796
1145C
Mystery Circuit
bitmasks
,
brute force
x790
1569E
Playoff Restoration
bitmasks
,
brute force
,
hashing
,
implementation
,
meet-in-the-middle
2600
x785
1398G
Running Competition
bitmasks
,
fft
,
math
,
number theory
2600
x773
1009G
Allowed Letters
bitmasks
,
flows
,
graph matchings
,
graphs
,
greedy
2400
x771
1734F
Zeros and Ones
bitmasks
,
divide and conquer
,
dp
,
math
2500
x770
1673F
Anti-Theft Road Planning
bitmasks
,
constructive algorithms
,
divide and conquer
,
greedy
,
interactive
,
math
2400
x770
1500C
Matrix Sorting
bitmasks
,
brute force
,
constructive algorithms
,
greedy
,
two pointers
2600
x765
1530F
Bingo
bitmasks
,
combinatorics
,
dp
,
math
,
probabilities
2600
x753
241B
Friends
binary search
,
bitmasks
,
data structures
,
math
2700
x751
413D
2048
bitmasks
,
dp
2000
x750
913E
Logical Expression
bitmasks
,
dp
,
shortest paths
2400
x744
1423J
Bubble Cup hypothesis
bitmasks
,
constructive algorithms
,
dp
,
math
2400
x736
908E
New Year and Entity Enumeration
bitmasks
,
combinatorics
,
dp
,
math
2500
x734
633G
Yash And Trees
bitmasks
,
data structures
,
dfs and similar
,
math
,
number theory
2800
x722
63E
Sweets Game
bitmasks
,
dfs and similar
,
dp
,
games
,
implementation
2000
x715
1903D2
Maximum And Queries (hard version)
bitmasks
,
divide and conquer
,
dp
,
greedy
2500
x712
1004F
Sonya and Bitwise OR
bitmasks
,
data structures
,
divide and conquer
2600
x704
1511G
Chips on a Board
bitmasks
,
brute force
,
data structures
,
dp
,
games
,
two pointers
2700
x701
1322D
Reality Show
bitmasks
,
dp
2800
x699
279D
The Minimum Number of Variables
bitmasks
,
dp
2200
x692
1342F
Make It Ascending
bitmasks
,
brute force
,
dp
3000
x688
232E
Quick Tortoise
bitmasks
,
divide and conquer
,
dp
3000
x677
441E
Valera and Number
bitmasks
,
dp
,
math
,
probabilities
2400
x675
1553H
XOR and Distance
bitmasks
,
divide and conquer
,
trees
2900
x674
71E
Nuclear Fusion
bitmasks
,
dp
2200
x671
1765A
Access Levels
bitmasks
,
dsu
,
flows
,
graph matchings
2400
x667
1673E
Power or XOR?
bitmasks
,
combinatorics
,
math
,
number theory
2500
x661
1849F
XOR Partition
binary search
,
bitmasks
,
data structures
,
divide and conquer
,
greedy
,
trees
2700
x658
1795G
Removal Sequences
bitmasks
,
dfs and similar
,
graphs
2700
x655
1336E1
Chiori and Doll Picking (easy version)
bitmasks
,
brute force
,
combinatorics
,
math
2700
x650
1163E
Magical Permutation
bitmasks
,
brute force
,
constructive algorithms
,
data structures
,
graphs
,
math
2400
x647
1844G
Tree Weights
bitmasks
,
constructive algorithms
,
data structures
,
dfs and similar
,
implementation
,
math
,
matrices
,
number theory
,
trees
3000
x645
878D
Magic Breeding
bitmasks
2900
x641
1430G
Yet Another DAG Problem
bitmasks
,
dfs and similar
,
dp
,
flows
,
graphs
,
math
2600
x626
903F
Clear The Matrix
bitmasks
,
dp
2200
x624
1948G
MST with Matching
bitmasks
,
brute force
,
dsu
,
graph matchings
,
trees
3100
x619
599E
Sandy and Nuts
bitmasks
,
dp
,
trees
2600
x619
1770F
Koxia and Sequence
bitmasks
,
combinatorics
,
dp
,
math
,
number theory
3100
x618
367D
Sereja and Sets
bitmasks
,
dfs and similar
2400
x617
1930F
Maximize the Difference
bitmasks
,
brute force
,
dfs and similar
2700
x616
1034E
Little C Loves 3 III
bitmasks
,
dp
,
math
3200
x601
566E
Restoring Map
bitmasks
,
constructive algorithms
,
trees
3200
x601
1152F2
Neko Rules the Catniverse (Large Version)
bitmasks
,
dp
,
matrices
3000
x597
1411G
No Game No Life
bitmasks
,
games
,
math
,
matrices
2700
x580
1705F
Mark and the Online Exam
bitmasks
,
constructive algorithms
,
interactive
,
probabilities
2900
x575
772D
Varying Kibibits
bitmasks
,
dp
2700
x572
1842H
Tenzing and Random Real Numbers
bitmasks
,
dp
,
graphs
,
math
,
probabilities
3000
x564
1383C
String Transformation 2
bitmasks
,
dp
,
graphs
,
trees
3100
x561
1463F
Max Correct Set
bitmasks
,
dp
,
math
3100
x552
1709F
Multiset of Strings
bitmasks
,
brute force
,
dp
,
fft
,
flows
,
graphs
,
math
,
meet-in-the-middle
,
trees
2500
x536
1225G
To Make 1
bitmasks
,
constructive algorithms
,
dp
,
greedy
,
number theory
3100
x523
1789F
Serval and Brain Power
bitmasks
,
brute force
,
dp
,
greedy
,
implementation
,
strings
2700
x521
1221G
Graph And Numbers
bitmasks
,
brute force
,
combinatorics
,
dp
,
meet-in-the-middle
2900
x520
1152F1
Neko Rules the Catniverse (Small Version)
bitmasks
,
dp
,
matrices
2800
x517
1117F
Crisp String
bitmasks
,
dp
2500
x517
1739F
Keyboard Design
bitmasks
,
data structures
,
dp
,
string suffix structures
,
strings
2600
x514
1713F
Lost Array
bitmasks
,
combinatorics
,
constructive algorithms
,
dp
,
math
2900
x510
685E
Travelling Through the Snow Queen's Kingdom
bitmasks
,
brute force
,
divide and conquer
,
graphs
2800
x503
1679F
Formalism for Formalism
bitmasks
,
dp
,
math
2600
x501
342D
Xenia and Dominoes
bitmasks
,
dfs and similar
,
dp
2100
x488
754E
Dasha and cyclic table
bitmasks
,
brute force
,
fft
,
strings
,
trees
2600
x481
582E
Boolean Function
bitmasks
,
dp
,
expression parsing
3000
x475
375C
Circling Round Treasures
bitmasks
,
shortest paths
2600
x473
1326F2
Wise Men (Hard Version)
bitmasks
,
dp
,
math
3200
x470
938F
Erasing Substrings
bitmasks
,
dp
,
greedy
2700
x469
152E
Garden
bitmasks
,
dp
,
graphs
,
trees
2500
x460
1906B
Button Pressing
bitmasks
,
constructive algorithms
,
hashing
2600
x456
1552G
A Serious Referee
bitmasks
,
brute force
,
dfs and similar
,
sortings
3000
x454
83E
Two Subsequences
bitmasks
,
dp
2800
x454
354B
Game with Strings
bitmasks
,
dp
,
games
2400
x448
534F
Simplified Nonogram
bitmasks
,
dp
,
hashing
,
meet-in-the-middle
2400
x443
1392G
Omkar and Pies
bitmasks
,
dfs and similar
,
dp
,
math
,
shortest paths
2900
x442
251D
Two Sets
bitmasks
,
math
2700
x442
750G
New Year and Binary Tree Paths
bitmasks
,
brute force
,
combinatorics
,
dp
3200
x441
1386C
Joker
*special problem
,
bitmasks
,
data structures
,
divide and conquer
,
dsu
2800
x430
662A
Gambling Nim
bitmasks
,
math
,
matrices
,
probabilities
2400
x429
1728G
Illumination
binary search
,
bitmasks
,
brute force
,
combinatorics
,
dp
,
math
,
two pointers
2700
x424
845F
Guards In The Storehouse
bitmasks
,
dp
2500
x421
1936D
Bitwise Paradox
binary search
,
bitmasks
,
data structures
,
greedy
,
two pointers
3100
x419
1299D
Around the World
bitmasks
,
combinatorics
,
dfs and similar
,
dp
,
graphs
,
graphs
,
math
,
trees
3000
x419
1730F
Almost Sorted
bitmasks
,
data structures
,
dp
2700
x412
1327G
Letters and Question Marks
bitmasks
,
dp
,
string suffix structures
2800
x407
1523F
Favorite Game
bitmasks
,
dp
3300
x400
1103D
Professional layer
bitmasks
,
dp
3100
x400
1543E
The Final Pursuit
bitmasks
,
constructive algorithms
,
divide and conquer
,
graphs
,
greedy
,
math
2700
x394
472G
Design Tutorial: Increase the Constraints
bitmasks
,
data structures
,
fft
2800
x393
201D
Brand New Problem
bitmasks
,
brute force
,
dp
2600
x389
1519F
Chests and Keys
bitmasks
,
brute force
,
dfs and similar
,
dp
,
flows
3200
x388
850E
Random Elections
bitmasks
,
brute force
,
divide and conquer
,
fft
,
math
2800
x380
1493F
Enchanted Matrix
bitmasks
,
interactive
,
number theory
2600
x375
1261F
Xor-Set
bitmasks
,
divide and conquer
,
math
3100
x370
1033F
Boolean Computer
bitmasks
,
brute force
,
fft
,
math
2800
x364
107C
Arrangement
bitmasks
,
dp
2400
x362
1036G
Sources and Sinks
bitmasks
,
brute force
,
dfs and similar
2700
x361
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bitmasks
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bitmasks
brute force
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combinatorics
constructive algorithms
data structures
dfs and similar
divide and conquer
dp
dsu
expression parsing
fft
flows
games
geometry
graph matchings
graphs
greedy
hashing
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interactive
math
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number theory
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