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Custom test
Problems
#
Name
66E
Petya and Post
data structures
,
dp
2000
x684
63E
Sweets Game
bitmasks
,
dfs and similar
,
dp
,
games
,
implementation
2000
x715
386C
Diverse Substrings
dp
,
strings
,
two pointers
2000
x745
435D
Special Grid
brute force
,
dp
,
greedy
2000
x746
413D
2048
bitmasks
,
dp
2000
x750
261C
Maxim and Matrix
constructive algorithms
,
dp
,
math
2000
x760
374D
Inna and Sequence
binary search
,
data structures
,
dp
,
trees
2000
x844
39E
What Has Dirichlet Got to Do with That?
dp
,
games
2000
x854
119C
Education Reform
dp
2000
x855
1057C
Tanya and Colored Candies
*special problem
,
dp
2000
x869
251C
Number Transformation
dp
,
greedy
,
number theory
2000
x1012
18E
Flag 2
dp
2000
x1022
18D
Seller Bob
brute force
,
dp
,
greedy
2000
x1032
958C2
Encryption (medium)
dp
2000
x1137
54C
First Digit Law
dp
,
math
,
probabilities
2000
x1246
201C
Fragile Bridges
dp
2000
x1288
87C
Interesting Game
dp
,
games
,
math
2000
x1309
852B
Neural Network country
dp
,
matrices
2000
x1377
379D
New Year Letter
bitmasks
,
brute force
,
dp
2000
x1483
75D
Big Maximum Sum
data structures
,
dp
,
greedy
,
implementation
,
math
,
trees
2000
x1740
258C
Little Elephant and LCM
binary search
,
combinatorics
,
dp
,
math
2000
x1759
314C
Sereja and Subsequences
data structures
,
dp
2000
x1764
78C
Beaver Game
dp
,
games
,
number theory
2000
x1804
689E
Mike and Geometry Problem
combinatorics
,
data structures
,
dp
,
geometry
,
implementation
2000
x1809
1102F
Elongated Matrix
binary search
,
bitmasks
,
brute force
,
dp
,
graphs
2000
x1913
82D
Two out of Three
dp
2000
x1922
730I
Olympiad in Programming and Sports
dp
,
flows
,
graphs
,
greedy
2000
x1947
855C
Helga Hufflepuff's Cup
dp
,
trees
2000
x1984
509C
Sums of Digits
dp
,
greedy
,
implementation
2000
x2009
21C
Stripe 2
binary search
,
dp
,
sortings
2000
x2023
696C
PLEASE
combinatorics
,
dp
,
implementation
,
math
,
matrices
2000
x2051
296B
Yaroslav and Two Strings
combinatorics
,
dp
2000
x2080
803E
Roma and Poker
dp
,
graphs
2000
x2103
814D
An overnight dance in discotheque
dfs and similar
,
dp
,
geometry
,
greedy
,
trees
2000
x2125
615C
Running Track
dp
,
greedy
,
strings
,
trees
2000
x2254
1248D1
The World Is Just a Programming Task (Easy Version)
brute force
,
dp
,
greedy
,
implementation
2000
x2288
156C
Cipher
combinatorics
,
dp
2000
x2293
533B
Work Group
dfs and similar
,
dp
,
graphs
,
strings
,
trees
2000
x2304
786A
Berzerk
dfs and similar
,
dp
,
games
2000
x2307
1612E
Messages
brute force
,
dp
,
greedy
,
probabilities
,
sortings
2000
x2391
1674G
Remove Directed Edges
dfs and similar
,
dp
,
graphs
2000
x2393
611D
New Year and Ancient Prophecy
dp
,
hashing
,
strings
2000
x2515
571B
Minimization
dp
,
greedy
,
sortings
2000
x2527
1157F
Maximum Balanced Circle
constructive algorithms
,
dp
,
greedy
,
two pointers
2000
x2533
999F
Cards and Joy
dp
2000
x2536
633D
Fibonacci-ish
brute force
,
dp
,
hashing
,
implementation
,
math
2000
x2564
494B
Obsessive String
dp
,
strings
2000
x2583
1610D
Not Quite Lee
combinatorics
,
dp
,
math
,
number theory
2000
x2585
1764D
Doremy's Pegging Game
combinatorics
,
dp
,
math
2000
x2643
1731E
Graph Cost
dp
,
greedy
,
math
,
number theory
2000
x2672
264C
Choosing Balls
dp
2000
x2683
758D
Ability To Convert
constructive algorithms
,
dp
,
greedy
,
math
,
strings
2000
x2688
128C
Games with Rectangle
combinatorics
,
dp
2000
x2698
963B
Destruction of a Tree
constructive algorithms
,
dfs and similar
,
dp
,
greedy
,
trees
2000
x2701
360B
Levko and Array
binary search
,
dp
2000
x2705
1209E1
Rotate Columns (easy version)
bitmasks
,
brute force
,
dp
,
greedy
,
sortings
2000
x2728
353D
Queue
constructive algorithms
,
dp
2000
x2729
621E
Wet Shark and Blocks
dp
,
matrices
2000
x2731
629C
Famil Door and Brackets
dp
,
strings
2000
x2739
213C
Relay Race
dp
2000
x2739
1142B
Lynyrd Skynyrd
data structures
,
dfs and similar
,
dp
,
math
,
trees
2000
x2785
997B
Roman Digits
brute force
,
combinatorics
,
dp
,
greedy
,
math
2000
x2857
1030E
Vasya and Good Sequences
bitmasks
,
dp
2000
x2971
1060E
Sergey and Subway
dfs and similar
,
dp
,
trees
2000
x2982
900D
Unusual Sequences
bitmasks
,
combinatorics
,
dp
,
math
,
number theory
2000
x3000
1889C1
Doremy's Drying Plan (Easy Version)
brute force
,
data structures
,
dp
,
greedy
,
sortings
2000
x3019
474E
Pillars
binary search
,
data structures
,
dp
,
sortings
,
trees
2000
x3126
1131D
Gourmet choice
dfs and similar
,
dp
,
dsu
,
graphs
,
greedy
2000
x3172
1923E
Count Paths
data structures
,
dfs and similar
,
dp
,
dsu
,
graphs
,
trees
2000
x3212
1956D
Nene and the Mex Operator
bitmasks
,
brute force
,
constructive algorithms
,
divide and conquer
,
dp
,
greedy
,
implementation
,
math
2000
x3249
8C
Looking for Order
bitmasks
,
dp
2000
x3250
893E
Counting Arrays
combinatorics
,
dp
,
math
,
number theory
2000
x3266
766D
Mahmoud and a Dictionary
data structures
,
dfs and similar
,
dp
,
dsu
,
graphs
2000
x3269
346B
Lucky Common Subsequence
dp
,
strings
2000
x3342
487B
Strip
binary search
,
data structures
,
dp
,
two pointers
2000
x3358
235B
Let's Play Osu!
dp
,
math
,
probabilities
2000
x3358
1458B
Glass Half Spilled
dp
2000
x3382
940E
Cashback
data structures
,
dp
,
greedy
,
math
2000
x3428
1646D
Weight the Tree
constructive algorithms
,
dfs and similar
,
dp
,
implementation
,
trees
2000
x3549
1582E
Pchelyonok and Segments
binary search
,
data structures
,
dp
,
greedy
,
math
2000
x3596
1680E
Moving Chips
bitmasks
,
dp
,
greedy
2000
x3638
1827B1
Range Sorting (Easy Version)
binary search
,
dp
,
dsu
,
greedy
,
trees
,
two pointers
2000
x3670
1551E
Fixed Points
binary search
,
brute force
,
dp
2000
x3693
1900D
Small GCD
bitmasks
,
brute force
,
dp
,
math
,
number theory
2000
x3730
777E
Hanoi Factory
brute force
,
data structures
,
dp
,
greedy
,
sortings
2000
x3869
629D
Babaei and Birthday Cake
data structures
,
dp
2000
x3871
1256E
Yet Another Division Into Teams
dp
,
greedy
,
sortings
2000
x3880
1796D
Maximum Subarray
data structures
,
dp
,
greedy
,
two pointers
2000
x3903
1223D
Sequence Sorting
dp
,
greedy
,
two pointers
2000
x3930
1624E
Masha-forgetful
brute force
,
constructive algorithms
,
dp
,
hashing
,
implementation
,
strings
2000
x3957
401D
Roman and Numbers
bitmasks
,
brute force
,
combinatorics
,
dp
,
number theory
2000
x3972
1733D2
Zero-One (Hard Version)
dp
,
greedy
2000
x3999
27E
Number With The Given Amount Of Divisors
brute force
,
dp
,
number theory
2000
x4000
1716C
Robot in a Hallway
data structures
,
dp
,
greedy
,
implementation
,
ternary search
2000
x4017
1566E
Buds Re-hanging
constructive algorithms
,
dfs and similar
,
dp
,
greedy
,
trees
2000
x4021
1082E
Increasing Frequency
binary search
,
dp
,
greedy
2000
x4055
797E
Array Queries
brute force
,
data structures
,
dp
2000
x4084
1506G
Maximize the Remaining String
brute force
,
data structures
,
dp
,
greedy
,
strings
2000
x4098
1257E
The Contest
data structures
,
dp
,
greedy
2000
x4124
864E
Fire
dp
,
sortings
2000
x4132
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combine-tags-by-or
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2-sat
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data structures
dfs and similar
divide and conquer
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dsu
expression parsing
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