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Problems
#
Name
1675F
Vlad and Unfinished Business
dfs and similar
,
dp
,
greedy
,
trees
1800
x5058
1675E
Replace With the Previous, Minimize
dsu
,
greedy
,
strings
1500
x10190
1675D
Vertical Paths
graphs
,
implementation
,
trees
1300
x12652
1675C
Detective Task
implementation
1100
x17852
1675B
Make It Increasing
greedy
,
implementation
900
x25089
1675A
Food for Animals
greedy
,
math
800
x31775
1674G
Remove Directed Edges
dfs and similar
,
dp
,
graphs
2000
x2403
1674F
Desktop Rearrangement
data structures
,
greedy
,
implementation
1800
x4899
1674E
Breaking the Wall
binary search
,
brute force
,
constructive algorithms
,
greedy
,
math
2000
x6203
1674D
A-B-C Sort
constructive algorithms
,
implementation
,
sortings
1200
x15849
1674C
Infinite Replacement
combinatorics
,
implementation
,
strings
1000
x23016
1674B
Dictionary
combinatorics
,
math
800
x25737
1674A
Number Transformation
constructive algorithms
,
math
800
x25771
1673F
Anti-Theft Road Planning
bitmasks
,
constructive algorithms
,
divide and conquer
,
greedy
,
interactive
,
math
2400
x776
1673E
Power or XOR?
bitmasks
,
combinatorics
,
math
,
number theory
2500
x666
1673D
Lost Arithmetic Progression
combinatorics
,
math
,
number theory
1900
x3211
1673C
Palindrome Basis
brute force
,
dp
,
math
,
number theory
1500
x11999
1673B
A Perfectly Balanced String?
brute force
,
greedy
,
strings
1100
x14415
1673A
Subtle Substring Subtraction
games
,
greedy
,
strings
800
x18256
1672I
PermutationForces
data structures
,
greedy
3000
x139
1672H
Zigu Zagu
constructive algorithms
,
data structures
,
greedy
2700
x917
1672G
Cross Xor
constructive algorithms
,
graphs
,
math
,
matrices
3200
x316
1672F2
Checker for Array Shuffling
constructive algorithms
,
dfs and similar
,
graphs
2800
x776
1672F1
Array Shuffling
constructive algorithms
,
graphs
,
greedy
2000
x2984
1672E
notepad.exe
binary search
,
constructive algorithms
,
greedy
,
interactive
2200
x2099
1672D
Cyclic Rotation
constructive algorithms
,
greedy
,
implementation
,
two pointers
1700
x6022
1672C
Unequal Array
constructive algorithms
,
greedy
,
implementation
1100
x12970
1672B
I love AAAB
constructive algorithms
,
implementation
800
x15599
1672A
Log Chopping
games
,
implementation
,
math
800
x15873
1671F
Permutation Counting
brute force
,
combinatorics
,
dp
,
fft
,
math
2700
x318
1671E
Preorder
combinatorics
,
divide and conquer
,
dp
,
dsu
,
hashing
,
sortings
,
trees
2100
x2659
1671D
Insert a Progression
brute force
,
constructive algorithms
,
greedy
1600
x7365
1671C
Dolce Vita
binary search
,
brute force
,
greedy
,
math
1200
x16115
1671B
Consecutive Points Segment
brute force
,
math
,
sortings
1000
x18182
1671A
String Building
implementation
800
x20210
1670F
Jee, You See?
bitmasks
,
combinatorics
,
dp
2400
x923
1670E
Hemose on the Tree
bitmasks
,
constructive algorithms
,
dfs and similar
,
trees
2200
x1689
1670D
Very Suspicious
binary search
,
brute force
,
geometry
,
greedy
,
implementation
,
math
1700
x4982
1670C
Where is the Pizza?
data structures
,
dfs and similar
,
dsu
,
graphs
,
implementation
,
math
1400
x9562
1670B
Dorms War
brute force
,
implementation
,
strings
1100
x12452
1670A
Prof. Slim
greedy
,
implementation
,
sortings
800
x15265
1669H
Maximal AND
bitmasks
,
greedy
,
math
1300
x16749
1669G
Fall Down
dfs and similar
,
implementation
1200
x17518
1669F
Eating Candies
binary search
,
data structures
,
greedy
,
two pointers
1100
x23530
1669E
2-Letter Strings
data structures
,
math
,
strings
1200
x17073
1669D
Colorful Stamp
implementation
1100
x21267
1669C
Odd/Even Increments
greedy
,
greedy
,
implementation
,
math
800
x33159
1669B
Triple
implementation
,
sortings
800
x40393
1669A
Division?
implementation
800
x58049
1668B
Social Distance
greedy
,
math
,
sortings
900
x16376
1668A
Direction Change
implementation
,
math
800
x16175
1667F
Yin Yang
implementation
3500
x93
1667E
Centroid Probabilities
combinatorics
,
dp
,
fft
,
math
3000
x629
1667D
Edge Elimination
constructive algorithms
,
dfs and similar
,
dp
,
trees
2900
x645
1667C
Half Queen Cover
constructive algorithms
,
math
2400
x1524
1667B
Optimal Partition
data structures
,
dp
2100
x3502
1667A
Make it Increasing
brute force
,
greedy
,
math
1300
x14428
1666L
Labyrinth
dfs and similar
,
graphs
1800
x2995
1666K
Kingdom Partition
flows
3200
x228
1666J
Job Lookup
constructive algorithms
,
dp
,
shortest paths
,
trees
2100
x1295
1666I
Interactive Treasure Hunt
brute force
,
constructive algorithms
,
geometry
,
interactive
,
math
2200
x1387
1666H
Heroes of Might
math
3500
x61
1666G
Global Warming
geometry
,
math
3100
x135
1666F
Fancy Stack
combinatorics
,
dp
,
implementation
2200
x1114
1666E
Even Split
binary search
,
constructive algorithms
,
greedy
,
math
2500
x685
1666D
Deletive Editing
greedy
900
x7086
1666C
Connect the Points
brute force
,
constructive algorithms
,
geometry
1800
x3092
1666B
Budget Distribution
3300
x54
1666A
Admissible Map
3300
x100
1665E
MinimizOR
bitmasks
,
brute force
,
data structures
,
divide and conquer
,
greedy
,
implementation
,
two pointers
2500
x1432
1665D
GCD Guess
bitmasks
,
chinese remainder theorem
,
constructive algorithms
,
games
,
interactive
,
math
,
number theory
2000
x3730
1665C
Tree Infection
binary search
,
greedy
,
sortings
,
trees
1600
x8086
1665B
Array Cloning Technique
constructive algorithms
,
greedy
,
sortings
900
x18969
1665A
GCD vs LCM
constructive algorithms
,
math
800
x23067
1663H
Cross-Language Program
*special problem
,
constructive algorithms
x1266
1663G
Six Characters
*special problem
,
constructive algorithms
,
strings
x205
1663F
In Every Generation...
*special problem
,
strings
x330
1663E
Are You Safe?
*special problem
,
implementation
x543
1663D
Is it rated - 3
*special problem
,
combinatorics
,
dp
,
math
x1390
1663C
Pōja Verdon
*special problem
,
implementation
,
math
x5624
1663B
Mike's Sequence
*special problem
,
divide and conquer
,
implementation
,
math
x3362
1663A
Who Tested?
*special problem
,
expression parsing
,
trees
x10415
1662O
Circular Maze
brute force
,
dfs and similar
,
graphs
,
implementation
x1278
1662N
Drone Photo
combinatorics
,
math
,
sortings
x697
1662M
Bottle Arrangements
constructive algorithms
x3315
1662L
Il Derby della Madonnina
data structures
,
dp
,
math
x999
1662K
Pandemic Restrictions
geometry
,
ternary search
x308
1662J
Training Camp
flows
,
graphs
x215
1662I
Ice Cream Shop
brute force
,
implementation
,
sortings
x1985
1662H
Boundary
brute force
,
math
x2815
1662G
Gastronomic Event
dp
,
greedy
,
trees
x448
1662F
Antennas
data structures
,
dfs and similar
,
graphs
,
graphs
,
implementation
,
implementation
,
shortest paths
,
shortest paths
x974
1662E
Round Table
math
x128
1662D
Evolution of Weasels
greedy
,
implementation
,
strings
x1699
1662C
European Trip
dp
,
graphs
,
math
,
matrices
x291
1662B
Toys
greedy
,
strings
x132
1662A
Organizing SWERC
brute force
,
implementation
x4193
1661F
Teleporters
binary search
,
greedy
2600
x558
1661E
Narrow Components
brute force
,
data structures
,
dp
,
dsu
,
math
,
trees
2500
x915
1661D
Progressions Covering
data structures
,
greedy
1900
x4549
←
1
2
...
17
18
19
20
21
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95
96
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Before contest
Codeforces Round 950 (Div. 3)
00:39:40
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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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