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Problems
#
Name
2B
The least round way
dp
,
math
2000
x10259
1370D
Odd-Even Subsequence
binary search
,
dp
,
dsu
,
greedy
,
implementation
2000
x9152
1359D
Yet Another Yet Another Task
data structures
,
dp
,
implementation
,
two pointers
2000
x8975
432D
Prefixes and Suffixes
dp
,
string suffix structures
,
strings
,
two pointers
2000
x8323
1132F
Clear the String
dp
2000
x7328
1288D
Minimax Problem
binary search
,
bitmasks
,
dp
2000
x6706
1363E
Tree Shuffling
dfs and similar
,
dp
,
greedy
,
trees
2000
x6497
337D
Book of Evil
dfs and similar
,
divide and conquer
,
dp
,
trees
2000
x5838
1268B
Domino for Young
dp
,
greedy
,
math
2000
x5635
1427C
The Hard Work of Paparazzi
dp
2000
x5488
478D
Red-Green Towers
dp
2000
x5485
1379C
Choosing flowers
binary search
,
brute force
,
data structures
,
dfs and similar
,
dp
,
greedy
,
sortings
,
two pointers
2000
x5430
1294F
Three Paths on a Tree
dfs and similar
,
dp
,
greedy
,
trees
2000
x5364
461B
Appleman and Tree
dfs and similar
,
dp
,
trees
2000
x5340
895C
Square Subsets
bitmasks
,
combinatorics
,
dp
,
math
2000
x5139
1426F
Number of Subsequences
combinatorics
,
dp
,
strings
2000
x5129
1716D
Chip Move
brute force
,
dp
,
math
2000
x5006
710E
Generate a String
dfs and similar
,
dp
2000
x4982
1391D
505
bitmasks
,
brute force
,
constructive algorithms
,
dp
,
greedy
,
implementation
2000
x4941
1296E2
String Coloring (hard version)
data structures
,
dp
2000
x4746
1616D
Keep the Average High
dp
,
greedy
,
math
2000
x4716
598E
Chocolate Bar
brute force
,
dp
2000
x4633
453B
Little Pony and Harmony Chest
bitmasks
,
brute force
,
dp
2000
x4531
1183E
Subsequences (easy version)
dp
,
graphs
,
implementation
,
shortest paths
2000
x4530
1804D
Accommodation
brute force
,
dp
,
greedy
,
implementation
2000
x4434
1101D
GCD Counting
data structures
,
dfs and similar
,
dp
,
number theory
,
trees
2000
x4432
792C
Divide by Three
dp
,
greedy
,
math
,
number theory
2000
x4227
1783D
Different Arrays
brute force
,
dp
,
implementation
2000
x4199
1416C
XOR Inverse
bitmasks
,
data structures
,
divide and conquer
,
dp
,
greedy
,
math
,
sortings
,
strings
,
trees
2000
x4193
1753C
Wish I Knew How to Sort
dp
,
math
,
probabilities
2000
x4181
1408D
Searchlights
binary search
,
brute force
,
data structures
,
dp
,
implementation
,
sortings
,
two pointers
2000
x4169
864E
Fire
dp
,
sortings
2000
x4137
1257E
The Contest
data structures
,
dp
,
greedy
2000
x4126
1506G
Maximize the Remaining String
brute force
,
data structures
,
dp
,
greedy
,
strings
2000
x4103
797E
Array Queries
brute force
,
data structures
,
dp
2000
x4089
1082E
Increasing Frequency
binary search
,
dp
,
greedy
2000
x4068
1566E
Buds Re-hanging
constructive algorithms
,
dfs and similar
,
dp
,
greedy
,
trees
2000
x4022
1716C
Robot in a Hallway
data structures
,
dp
,
greedy
,
implementation
,
ternary search
2000
x4021
27E
Number With The Given Amount Of Divisors
brute force
,
dp
,
number theory
2000
x4006
1733D2
Zero-One (Hard Version)
dp
,
greedy
2000
x4003
401D
Roman and Numbers
bitmasks
,
brute force
,
combinatorics
,
dp
,
number theory
2000
x3974
1624E
Masha-forgetful
brute force
,
constructive algorithms
,
dp
,
hashing
,
implementation
,
strings
2000
x3959
1223D
Sequence Sorting
dp
,
greedy
,
two pointers
2000
x3930
1796D
Maximum Subarray
data structures
,
dp
,
greedy
,
two pointers
2000
x3906
1256E
Yet Another Division Into Teams
dp
,
greedy
,
sortings
2000
x3882
777E
Hanoi Factory
brute force
,
data structures
,
dp
,
greedy
,
sortings
2000
x3874
629D
Babaei and Birthday Cake
data structures
,
dp
2000
x3873
1900D
Small GCD
bitmasks
,
brute force
,
dp
,
math
,
number theory
2000
x3741
1551E
Fixed Points
binary search
,
brute force
,
dp
2000
x3695
1827B1
Range Sorting (Easy Version)
binary search
,
dp
,
dsu
,
greedy
,
trees
,
two pointers
2000
x3673
1680E
Moving Chips
bitmasks
,
dp
,
greedy
2000
x3641
1582E
Pchelyonok and Segments
binary search
,
data structures
,
dp
,
greedy
,
math
2000
x3598
1646D
Weight the Tree
constructive algorithms
,
dfs and similar
,
dp
,
implementation
,
trees
2000
x3551
940E
Cashback
data structures
,
dp
,
greedy
,
math
2000
x3435
1458B
Glass Half Spilled
dp
2000
x3389
487B
Strip
binary search
,
data structures
,
dp
,
two pointers
2000
x3366
235B
Let's Play Osu!
dp
,
math
,
probabilities
2000
x3361
346B
Lucky Common Subsequence
dp
,
strings
2000
x3347
1956D
Nene and the Mex Operator
bitmasks
,
brute force
,
constructive algorithms
,
divide and conquer
,
dp
,
greedy
,
implementation
,
math
2000
x3300
766D
Mahmoud and a Dictionary
data structures
,
dfs and similar
,
dp
,
dsu
,
graphs
2000
x3272
893E
Counting Arrays
combinatorics
,
dp
,
math
,
number theory
2000
x3266
8C
Looking for Order
bitmasks
,
dp
2000
x3251
1923E
Count Paths
data structures
,
dfs and similar
,
dp
,
dsu
,
graphs
,
trees
2000
x3231
1131D
Gourmet choice
dfs and similar
,
dp
,
dsu
,
graphs
,
greedy
2000
x3174
474E
Pillars
binary search
,
data structures
,
dp
,
sortings
,
trees
2000
x3135
1889C1
Doremy's Drying Plan (Easy Version)
brute force
,
data structures
,
dp
,
greedy
,
sortings
2000
x3028
900D
Unusual Sequences
bitmasks
,
combinatorics
,
dp
,
math
,
number theory
2000
x3003
1060E
Sergey and Subway
dfs and similar
,
dp
,
trees
2000
x2985
1030E
Vasya and Good Sequences
bitmasks
,
dp
2000
x2974
997B
Roman Digits
brute force
,
combinatorics
,
dp
,
greedy
,
math
2000
x2864
1142B
Lynyrd Skynyrd
data structures
,
dfs and similar
,
dp
,
math
,
trees
2000
x2787
629C
Famil Door and Brackets
dp
,
strings
2000
x2740
213C
Relay Race
dp
2000
x2740
621E
Wet Shark and Blocks
dp
,
matrices
2000
x2734
1209E1
Rotate Columns (easy version)
bitmasks
,
brute force
,
dp
,
greedy
,
sortings
2000
x2729
353D
Queue
constructive algorithms
,
dp
2000
x2729
360B
Levko and Array
binary search
,
dp
2000
x2705
963B
Destruction of a Tree
constructive algorithms
,
dfs and similar
,
dp
,
greedy
,
trees
2000
x2702
128C
Games with Rectangle
combinatorics
,
dp
2000
x2699
758D
Ability To Convert
constructive algorithms
,
dp
,
greedy
,
math
,
strings
2000
x2688
264C
Choosing Balls
dp
2000
x2684
1731E
Graph Cost
dp
,
greedy
,
math
,
number theory
2000
x2675
1764D
Doremy's Pegging Game
combinatorics
,
dp
,
math
2000
x2645
1610D
Not Quite Lee
combinatorics
,
dp
,
math
,
number theory
2000
x2589
494B
Obsessive String
dp
,
strings
2000
x2583
633D
Fibonacci-ish
brute force
,
dp
,
hashing
,
implementation
,
math
2000
x2567
999F
Cards and Joy
dp
2000
x2539
1157F
Maximum Balanced Circle
constructive algorithms
,
dp
,
greedy
,
two pointers
2000
x2534
571B
Minimization
dp
,
greedy
,
sortings
2000
x2527
611D
New Year and Ancient Prophecy
dp
,
hashing
,
strings
2000
x2516
1674G
Remove Directed Edges
dfs and similar
,
dp
,
graphs
2000
x2397
1612E
Messages
brute force
,
dp
,
greedy
,
probabilities
,
sortings
2000
x2391
786A
Berzerk
dfs and similar
,
dp
,
games
2000
x2308
533B
Work Group
dfs and similar
,
dp
,
graphs
,
strings
,
trees
2000
x2305
156C
Cipher
combinatorics
,
dp
2000
x2294
1248D1
The World Is Just a Programming Task (Easy Version)
brute force
,
dp
,
greedy
,
implementation
2000
x2290
615C
Running Track
dp
,
greedy
,
strings
,
trees
2000
x2254
814D
An overnight dance in discotheque
dfs and similar
,
dp
,
geometry
,
greedy
,
trees
2000
x2125
803E
Roma and Poker
dp
,
graphs
2000
x2103
296B
Yaroslav and Two Strings
combinatorics
,
dp
2000
x2082
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binary search
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dfs and similar
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dp
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