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Codeforces Round 950 (Div. 3)
34:23:48
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*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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Custom test
Problems
#
Name
1036G
Sources and Sinks
bitmasks
,
brute force
,
dfs and similar
2700
x363
1036F
Relatively Prime Powers
combinatorics
,
math
,
number theory
2400
x1416
1036E
Covered Points
fft
,
geometry
,
number theory
2400
x1417
1036D
Vasya and Arrays
greedy
,
two pointers
1600
x9002
1036C
Classy Numbers
combinatorics
,
dp
1900
x8707
1036B
Diagonal Walking v.2
math
1600
x5627
1036A
Function Height
math
1000
x10050
1034E
Little C Loves 3 III
bitmasks
,
dp
,
math
3200
x603
1034D
Intervals of Intervals
binary search
,
data structures
,
two pointers
3500
x435
1034C
Region Separation
combinatorics
,
dp
,
number theory
,
trees
2700
x856
1034B
Little C Loves 3 II
brute force
,
constructive algorithms
,
flows
,
graph matchings
2200
x2078
1034A
Enlarge GCD
number theory
1800
x8363
1033G
Chip Game
games
3500
x359
1033F
Boolean Computer
bitmasks
,
brute force
,
fft
,
math
2800
x367
1033E
Hidden Bipartite Graph
binary search
,
constructive algorithms
,
dfs and similar
,
graphs
,
interactive
2800
x586
1033D
Divisors
interactive
,
math
,
number theory
2000
x2314
1033C
Permutation Game
brute force
,
dp
,
games
1600
x5396
1033B
Square Difference
math
,
number theory
1100
x9279
1033A
King Escape
dfs and similar
,
graphs
,
implementation
1000
x13027
1032G
Chattering
2900
x428
1032F
Vasya and Maximum Matching
dp
,
trees
2400
x904
1032E
The Unbearable Lightness of Weights
dp
,
math
2100
x1521
1032D
Barcelonian Distance
geometry
,
implementation
1900
x2758
1032C
Playing Piano
constructive algorithms
,
dp
1700
x3904
1032B
Personalized Cup
1200
x4963
1032A
Kitchen Utensils
900
x6794
1031F
Familiar Operations
brute force
,
graphs
,
math
2800
x267
1031E
Triple Flips
constructive algorithms
2600
x432
1031D
Minimum path
greedy
1900
x2621
1031C
Cram Time
greedy
1600
x5172
1031B
Curiosity Has No Limits
1500
x3891
1031A
Golden Plate
implementation
,
math
800
x12767
1030G
Linear Congruential Generator
number theory
2900
x350
1030F
Putting Boxes Together
data structures
2500
x791
1030E
Vasya and Good Sequences
bitmasks
,
dp
2000
x2976
1030D
Vasya and Triangle
geometry
,
number theory
1800
x5689
1030C
Vasya and Golden Ticket
implementation
1300
x9333
1030B
Vasya and Cornfield
geometry
1100
x11904
1030A
In Search of an Easy Problem
implementation
800
x121394
1029F
Multicolored Markers
binary search
,
brute force
,
math
,
number theory
2000
x2484
1029E
Tree with Small Distances
dp
,
graphs
,
greedy
2100
x2796
1029D
Concatenated Multiples
implementation
,
math
1900
x3765
1029C
Maximal Intersection
greedy
,
math
,
sortings
1600
x7340
1029B
Creating the Contest
dp
,
greedy
,
math
1200
x16496
1029A
Many Equal Substrings
implementation
,
strings
1300
x12056
1028H
Make Square
math
2900
x481
1028G
Guess the number
dp
,
interactive
3000
x533
1028F
Make Symmetrical
brute force
2900
x511
1028E
Restore Array
constructive algorithms
2400
x1126
1028D
Order book
combinatorics
,
data structures
,
greedy
2100
x1715
1028C
Rectangles
geometry
,
implementation
,
sortings
1600
x4378
1028B
Unnatural Conditions
constructive algorithms
,
math
1200
x8818
1028A
Find Square
implementation
800
x10650
1027G
X-mouse in the Campus
bitmasks
,
math
,
number theory
2600
x298
1027F
Session in BSU
binary search
,
dfs and similar
,
dsu
,
graph matchings
,
graphs
2400
x1510
1027E
Inverse Coloring
combinatorics
,
dp
,
math
2100
x1915
1027D
Mouse Hunt
dfs and similar
,
graphs
1700
x7091
1027C
Minimum Value Rectangle
greedy
1600
x6657
1027B
Numbers on the Chessboard
implementation
,
math
1200
x8136
1027A
Palindromic Twist
implementation
,
strings
1000
x15639
1025G
Company Acquisitions
constructive algorithms
,
math
3200
x653
1025F
Disjoint Triangles
geometry
2700
x639
1025E
Colored Cubes
constructive algorithms
,
implementation
,
matrices
2700
x549
1025D
Recovering BST
brute force
,
dp
,
math
,
number theory
,
trees
2100
x3363
1025C
Plasticine zebra
constructive algorithms
,
implementation
1600
x5994
1025B
Weakened Common Divisor
brute force
,
greedy
,
number theory
1600
x7784
1025A
Doggo Recoloring
implementation
,
sortings
900
x14630
1023G
Pisces
data structures
,
flows
,
trees
3400
x114
1023F
Mobile Phone Network
dfs and similar
,
dsu
,
graphs
,
trees
2600
x865
1023E
Down or Right
constructive algorithms
,
interactive
,
matrices
2100
x1961
1023D
Array Restoration
constructive algorithms
,
data structures
1700
x3950
1023C
Bracket Subsequence
greedy
1200
x9626
1023B
Pair of Toys
math
1000
x10644
1023A
Single Wildcard Pattern Matching
brute force
,
implementation
,
strings
1200
x8532
1020B
Badge
brute force
,
dfs and similar
,
graphs
1000
x20291
1020A
New Building for SIS
math
1000
x8880
1019E
Raining season
data structures
,
divide and conquer
,
trees
3200
x329
1019D
Large Triangle
binary search
,
geometry
,
sortings
2700
x630
1019C
Sergey's problem
constructive algorithms
,
graphs
3000
x1079
1019B
The hat
binary search
,
interactive
2000
x1892
1019A
Elections
brute force
,
greedy
1700
x4571
1017H
The Films
brute force
3300
x139
1017G
The Tree
data structures
3200
x828
1017F
The Neutral Zone
brute force
,
math
2500
x803
1017E
The Supersonic Rocket
geometry
,
hashing
,
strings
2400
x815
1017D
The Wu
bitmasks
,
brute force
,
data structures
1900
x3357
1017C
The Phone Number
constructive algorithms
,
greedy
1600
x5925
1017B
The Bits
implementation
,
math
1200
x9057
1017A
The Rank
implementation
800
x20040
1016G
Appropriate Team
bitmasks
,
math
,
number theory
2700
x258
1016F
Road Projects
dfs and similar
,
dp
,
trees
2600
x783
1016E
Rest In The Shades
binary search
,
geometry
2400
x933
1016D
Vasya And The Matrix
constructive algorithms
,
flows
,
math
1800
x4492
1016C
Vasya And The Mushrooms
dp
,
implementation
1800
x3642
1016B
Segment Occurrences
brute force
,
implementation
1300
x9273
1016A
Death Note
greedy
,
implementation
,
math
900
x14706
1015F
Bracket Substring
dp
,
strings
2300
x1055
1015E2
Stars Drawing (Hard Edition)
binary search
,
dp
,
greedy
1900
x3481
1015E1
Stars Drawing (Easy Edition)
brute force
,
dp
,
greedy
1700
x5492
1015D
Walking Between Houses
constructive algorithms
,
greedy
1600
x7974
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