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Rayan
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Before contest
Codeforces Round 1006 (Div. 3)
36:11:37
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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
1041C
Coffee Break
binary search
,
data structures
,
greedy
,
two pointers
1600
x9631
1041B
Buying a TV Set
math
1000
x14184
1041A
Heist
greedy
,
implementation
,
sortings
800
x25535
1040B
Shashlik Cooking
dp
,
greedy
,
math
1300
x7182
1040A
Palindrome Dance
greedy
1000
x9724
1039E
Summer Oenothera Exhibition
data structures
3400
x286
1039D
You Are Given a Tree
data structures
,
dp
,
trees
2800
x1912
1039C
Network Safety
dfs and similar
,
dsu
,
graphs
,
math
,
sortings
2200
x1384
1039B
Subway Pursuit
binary search
,
interactive
,
probabilities
2100
x2429
1039A
Timetable
constructive algorithms
,
data structures
,
greedy
,
math
2300
x799
1038F
Wrap Around
dp
,
strings
2900
x353
1038E
Maximum Matching
bitmasks
,
brute force
,
dfs and similar
,
dp
,
graphs
2400
x1008
1038D
Slime
dp
,
greedy
,
implementation
1800
x8506
1038C
Gambling
greedy
,
sortings
1300
x9540
1038B
Non-Coprime Partition
constructive algorithms
,
math
1100
x13864
1038A
Equality
implementation
,
strings
800
x15089
1037H
Security
data structures
,
string suffix structures
3200
x1070
1037G
A Game on Strings
games
3200
x321
1037F
Maximum Reduction
combinatorics
,
data structures
,
math
2500
x1163
1037E
Trips
graphs
2200
x2944
1037D
Valid BFS?
dfs and similar
,
graphs
,
shortest paths
,
trees
1700
x15547
1037C
Equalize
dp
,
greedy
,
strings
1300
x19131
1037B
Reach Median
greedy
1300
x10480
1037A
Packets
constructive algorithms
,
greedy
,
math
1300
x11312
1036G
Sources and Sinks
bitmasks
,
brute force
,
dfs and similar
2700
x388
1036F
Relatively Prime Powers
combinatorics
,
math
,
number theory
2400
x1640
1036E
Covered Points
fft
,
geometry
,
number theory
2400
x1668
1036D
Vasya and Arrays
greedy
,
two pointers
1600
x9651
1036C
Classy Numbers
combinatorics
,
dp
1900
x10219
1036B
Diagonal Walking v.2
math
1600
x5768
1036A
Function Height
math
1000
x10279
1034E
Little C Loves 3 III
bitmasks
,
dp
,
math
3200
x660
1034D
Intervals of Intervals
binary search
,
data structures
,
two pointers
3500
x468
1034C
Region Separation
combinatorics
,
dp
,
number theory
,
trees
2700
x904
1034B
Little C Loves 3 II
brute force
,
constructive algorithms
,
flows
,
graph matchings
2200
x2177
1034A
Enlarge GCD
number theory
1800
x8985
1033G
Chip Game
games
3500
x436
1033F
Boolean Computer
bitmasks
,
brute force
,
fft
,
math
2800
x397
1033E
Hidden Bipartite Graph
binary search
,
constructive algorithms
,
dfs and similar
,
graphs
,
interactive
2800
x674
1033D
Divisors
interactive
,
math
,
number theory
2000
x2462
1033C
Permutation Game
brute force
,
dp
,
games
1600
x5688
1033B
Square Difference
math
,
number theory
1100
x10284
1033A
King Escape
dfs and similar
,
graphs
,
implementation
1000
x14173
1032G
Chattering
2900
x473
1032F
Vasya and Maximum Matching
dp
,
trees
2400
x987
1032E
The Unbearable Lightness of Weights
dp
,
math
2100
x1713
1032D
Barcelonian Distance
geometry
,
implementation
1900
x2854
1032C
Playing Piano
constructive algorithms
,
dp
1700
x4071
1032B
Personalized Cup
1200
x5037
1032A
Kitchen Utensils
900
x6933
1031F
Familiar Operations
brute force
,
graphs
,
math
2800
x287
1031E
Triple Flips
constructive algorithms
2600
x541
1031D
Minimum path
greedy
1900
x2844
1031C
Cram Time
greedy
1600
x5384
1031B
Curiosity Has No Limits
1500
x3951
1031A
Golden Plate
implementation
,
math
800
x13030
1030G
Linear Congruential Generator
number theory
2900
x381
1030F
Putting Boxes Together
data structures
2500
x830
1030E
Vasya and Good Sequences
bitmasks
,
dp
2000
x3151
1030D
Vasya and Triangle
geometry
,
number theory
1800
x6058
1030C
Vasya and Golden Ticket
implementation
1300
x9521
1030B
Vasya and Cornfield
geometry
1100
x12510
1030A
In Search of an Easy Problem
implementation
800
x142363
1029F
Multicolored Markers
binary search
,
brute force
,
math
,
number theory
2000
x2639
1029E
Tree with Small Distances
dp
,
graphs
,
greedy
2100
x3017
1029D
Concatenated Multiples
implementation
,
math
1900
x3926
1029C
Maximal Intersection
greedy
,
math
,
sortings
1600
x7691
1029B
Creating the Contest
dp
,
greedy
,
math
1200
x17319
1029A
Many Equal Substrings
implementation
,
strings
1300
x12521
1028H
Make Square
math
2900
x503
1028G
Guess the number
dp
,
interactive
3000
x589
1028F
Make Symmetrical
brute force
2900
x527
1028E
Restore Array
constructive algorithms
2400
x1154
1028D
Order book
combinatorics
,
data structures
,
greedy
2100
x1769
1028C
Rectangles
geometry
,
implementation
,
sortings
1600
x4690
1028B
Unnatural Conditions
constructive algorithms
,
math
1200
x9421
1028A
Find Square
implementation
800
x11014
1027G
X-mouse in the Campus
bitmasks
,
math
,
number theory
2600
x319
1027F
Session in BSU
binary search
,
dfs and similar
,
dsu
,
graph matchings
,
graphs
2400
x1589
1027E
Inverse Coloring
combinatorics
,
dp
,
math
2100
x2162
1027D
Mouse Hunt
dfs and similar
,
graphs
1700
x7690
1027C
Minimum Value Rectangle
greedy
1600
x6955
1027B
Numbers on the Chessboard
implementation
,
math
1200
x8475
1027A
Palindromic Twist
implementation
,
strings
1000
x16880
1025G
Company Acquisitions
constructive algorithms
,
math
3200
x752
1025F
Disjoint Triangles
geometry
2700
x709
1025E
Colored Cubes
constructive algorithms
,
implementation
,
matrices
2700
x581
1025D
Recovering BST
brute force
,
dp
,
math
,
number theory
,
trees
2100
x3779
1025C
Plasticine zebra
constructive algorithms
,
implementation
1600
x6208
1025B
Weakened Common Divisor
brute force
,
greedy
,
number theory
1600
x8047
1025A
Doggo Recoloring
implementation
,
sortings
900
x15417
1023G
Pisces
data structures
,
flows
,
trees
3400
x131
1023F
Mobile Phone Network
dfs and similar
,
dsu
,
graphs
,
trees
2600
x917
1023E
Down or Right
constructive algorithms
,
interactive
,
matrices
2100
x2082
1023D
Array Restoration
constructive algorithms
,
data structures
1700
x4095
1023C
Bracket Subsequence
greedy
1200
x10120
1023B
Pair of Toys
math
1000
x11046
1023A
Single Wildcard Pattern Matching
brute force
,
implementation
,
strings
1200
x8837
1020B
Badge
brute force
,
dfs and similar
,
graphs
1000
x22093
1020A
New Building for SIS
math
1000
x9091
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