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Custom test
Problems
#
Name
1697A
Parkway Walk
greedy
,
implementation
800
x25433
1696H
Maximum Product?
brute force
,
combinatorics
,
dp
,
greedy
,
implementation
,
math
,
two pointers
3500
x153
1696C
Fishingprince Plays With Array
constructive algorithms
,
greedy
,
implementation
,
math
1400
x11319
1694A
Creep
greedy
,
implementation
800
x22159
1692E
Binary Deque
binary search
,
implementation
,
two pointers
1200
x20072
1692D
The Clock
brute force
,
implementation
1100
x18787
1692C
Where's the Bishop?
implementation
800
x32597
1692A
Marathon
implementation
800
x60284
1691D
Max GEQ Sum
binary search
,
constructive algorithms
,
data structures
,
divide and conquer
,
implementation
,
two pointers
1800
x5497
1691B
Shoe Shuffling
constructive algorithms
,
greedy
,
implementation
,
two pointers
1000
x21364
1690D
Black and White Stripe
implementation
,
two pointers
1000
x26969
1690C
Restoring the Duration of Tasks
data structures
,
greedy
,
implementation
800
x25499
1690B
Array Decrements
greedy
,
implementation
800
x24806
1689A
Lex String
brute force
,
greedy
,
implementation
,
sortings
,
two pointers
800
x16391
1687D
Cute number
binary search
,
brute force
,
data structures
,
dsu
,
implementation
,
math
2900
x557
1685B
Linguistics
greedy
,
implementation
,
sortings
,
strings
2000
x3170
1684C
Column Swapping
brute force
,
constructive algorithms
,
greedy
,
implementation
,
sortings
1400
x12037
1682D
Circular Spanning Tree
constructive algorithms
,
implementation
,
trees
2000
x3178
1682C
LIS or Reverse LIS?
constructive algorithms
,
greedy
,
implementation
,
math
1400
x14148
1681C
Double Sort
implementation
,
sortings
1200
x16986
1681B
Card Trick
implementation
,
math
800
x19836
1680B
Robots
implementation
800
x18079
1679C
Rooks Defenders
data structures
,
implementation
1400
x9909
1679B
Stone Age Problem
data structures
,
implementation
1200
x17061
1678B2
Tokitsukaze and Good 01-String (hard version)
dp
,
greedy
,
implementation
1800
x6402
1678B1
Tokitsukaze and Good 01-String (easy version)
implementation
800
x15690
1678A
Tokitsukaze and All Zero Sequence
implementation
800
x17931
1677B
Tokitsukaze and Meeting
data structures
,
implementation
,
math
1700
x4024
1676F
Longest Strike
data structures
,
greedy
,
implementation
,
sortings
,
two pointers
1300
x15890
1676D
X-Sum
brute force
,
greedy
,
implementation
1000
x24086
1676C
Most Similar Words
brute force
,
greedy
,
implementation
,
implementation
,
math
,
strings
800
x28896
1676A
Lucky?
implementation
800
x58379
1675D
Vertical Paths
graphs
,
implementation
,
trees
1300
x12595
1675C
Detective Task
implementation
1100
x17775
1675B
Make It Increasing
greedy
,
implementation
900
x24840
1674F
Desktop Rearrangement
data structures
,
greedy
,
implementation
1800
x4882
1674D
A-B-C Sort
constructive algorithms
,
implementation
,
sortings
1200
x15800
1674C
Infinite Replacement
combinatorics
,
implementation
,
strings
1000
x22956
1672D
Cyclic Rotation
constructive algorithms
,
greedy
,
implementation
,
two pointers
1700
x5995
1672C
Unequal Array
constructive algorithms
,
greedy
,
implementation
1100
x12942
1672B
I love AAAB
constructive algorithms
,
implementation
800
x15586
1672A
Log Chopping
games
,
implementation
,
math
800
x15854
1671A
String Building
implementation
800
x20178
1670D
Very Suspicious
binary search
,
brute force
,
geometry
,
greedy
,
implementation
,
math
1700
x4960
1670C
Where is the Pizza?
data structures
,
dfs and similar
,
dsu
,
graphs
,
implementation
,
math
1400
x9532
1670B
Dorms War
brute force
,
implementation
,
strings
1100
x12425
1670A
Prof. Slim
greedy
,
implementation
,
sortings
800
x15246
1669G
Fall Down
dfs and similar
,
implementation
1200
x17406
1669D
Colorful Stamp
implementation
1100
x21154
1669C
Odd/Even Increments
greedy
,
greedy
,
implementation
,
math
800
x33009
1669B
Triple
implementation
,
sortings
800
x40128
1669A
Division?
implementation
800
x57537
1668A
Direction Change
implementation
,
math
800
x16164
1667F
Yin Yang
implementation
3500
x91
1666F
Fancy Stack
combinatorics
,
dp
,
implementation
2200
x1111
1665E
MinimizOR
bitmasks
,
brute force
,
data structures
,
divide and conquer
,
greedy
,
implementation
,
two pointers
2500
x1428
1663E
Are You Safe?
*special problem
,
implementation
x541
1663C
Pōja Verdon
*special problem
,
implementation
,
math
x5620
1663B
Mike's Sequence
*special problem
,
divide and conquer
,
implementation
,
math
x3357
1662O
Circular Maze
brute force
,
dfs and similar
,
graphs
,
implementation
x1272
1662I
Ice Cream Shop
brute force
,
implementation
,
sortings
x1975
1662F
Antennas
data structures
,
dfs and similar
,
graphs
,
graphs
,
implementation
,
implementation
,
shortest paths
,
shortest paths
x966
1662D
Evolution of Weasels
greedy
,
implementation
,
strings
x1691
1662A
Organizing SWERC
brute force
,
implementation
x4182
1660F2
Promising String (hard version)
data structures
,
implementation
,
math
,
strings
2100
x2605
1660F1
Promising String (easy version)
brute force
,
implementation
,
math
,
strings
1700
x7012
1660E
Matrix and Shifts
brute force
,
constructive algorithms
,
greedy
,
implementation
1600
x6991
1660D
Maximum Product Strikes Back
brute force
,
implementation
,
math
,
two pointers
1600
x8184
1659D
Reverse Sort Sum
constructive algorithms
,
data structures
,
greedy
,
implementation
,
math
,
two pointers
1900
x3885
1659C
Line Empire
binary search
,
brute force
,
dp
,
greedy
,
implementation
,
math
1500
x9735
1659A
Red Versus Blue
constructive algorithms
,
greedy
,
implementation
,
math
1000
x17051
1658E
Gojou and Matrix Game
data structures
,
dp
,
games
,
hashing
,
implementation
,
math
,
number theory
,
sortings
2500
x1022
1658A
Marin and Photoshoot
constructive algorithms
,
implementation
,
math
800
x20140
1657C
Bracket Sequence Deletion
greedy
,
implementation
1200
x16537
1654C
Alice and the Cake
data structures
,
greedy
,
implementation
,
sortings
1400
x13172
1654A
Maximum Cake Tastiness
brute force
,
greedy
,
implementation
,
sortings
800
x18433
1651C
Fault-tolerant Network
brute force
,
data structures
,
implementation
1500
x10486
1651A
Playoff
implementation
800
x25373
1650F
Vitaly and Advanced Useless Algorithms
dp
,
greedy
,
implementation
2200
x1386
1650E
Rescheduling the Exam
binary search
,
data structures
,
greedy
,
implementation
,
math
,
sortings
1900
x4027
1650D
Twist the Permutation
brute force
,
constructive algorithms
,
implementation
,
math
1300
x12708
1650C
Weight of the System of Nested Segments
greedy
,
hashing
,
implementation
,
sortings
1200
x16420
1650A
Deletions of Two Adjacent Letters
implementation
,
strings
800
x33946
1649B
Game of Ball Passing
greedy
,
implementation
1300
x12783
1649A
Game
implementation
800
x15402
1648E
Air Reform
data structures
,
dfs and similar
,
divide and conquer
,
dsu
,
graphs
,
implementation
,
trees
3200
x384
1648D
Serious Business
data structures
,
divide and conquer
,
dp
,
implementation
,
shortest paths
2800
x793
1648C
Tyler and Strings
combinatorics
,
data structures
,
implementation
1900
x2870
1647B
Madoka and the Elegant Gift
brute force
,
constructive algorithms
,
graphs
,
implementation
1200
x15086
1647A
Madoka and Math Dad
implementation
,
math
800
x22503
1646F
Playing Around the Table
constructive algorithms
,
greedy
,
implementation
2900
x402
1646D
Weight the Tree
constructive algorithms
,
dfs and similar
,
dp
,
implementation
,
trees
2000
x3551
1644E
Expand the Path
brute force
,
combinatorics
,
data structures
,
implementation
,
math
1900
x3008
1644D
Cross Coloring
data structures
,
implementation
,
math
1700
x7002
1644C
Increase Subarray Sums
brute force
,
dp
,
greedy
,
implementation
1400
x13395
1644B
Anti-Fibonacci Permutation
brute force
,
constructive algorithms
,
implementation
800
x20467
1644A
Doors and Keys
implementation
800
x26917
1641B
Repetitions Decoding
constructive algorithms
,
implementation
,
sortings
2000
x3731
1638E
Colorful Operations
brute force
,
data structures
,
implementation
2400
x1795
1638D
Big Brush
constructive algorithms
,
data structures
,
greedy
,
implementation
2000
x4052
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