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Codeforces Round 1006 (Div. 3)
3 days
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Difficulty:
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two pointers
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
2060C
Game of Mathletes
games
,
greedy
,
sortings
,
two pointers
900
x24360
2055C
The Trail
brute force
,
constructive algorithms
,
greedy
,
math
,
two pointers
1400
x13946
2051D
Counting Pairs
binary search
,
sortings
,
two pointers
1200
x17919
2038L
Bridge Renovation
brute force
,
dp
,
greedy
,
math
,
two pointers
1400
x5702
2037D
Sharky Surfing
data structures
,
greedy
,
two pointers
1300
x11864
2034B
Rakhsh's Revival
data structures
,
greedy
,
implementation
,
two pointers
1000
x12651
2033C
Sakurako's Field Trip
dp
,
greedy
,
two pointers
1400
x14457
2032C
Trinity
binary search
,
math
,
sortings
,
two pointers
1400
x13260
2025C
New Game
binary search
,
brute force
,
greedy
,
implementation
,
sortings
,
two pointers
1300
x15964
2025A
Two Screens
binary search
,
greedy
,
strings
,
two pointers
800
x25149
2000D
Right Left Wrong
greedy
,
implementation
,
two pointers
1200
x24531
2000B
Seating in a Bus
two pointers
800
x35645
1997B
Make Three Regions
constructive algorithms
,
two pointers
1100
x21513
1995B1
Bouquet (Easy Version)
binary search
,
brute force
,
greedy
,
sortings
,
two pointers
1100
x18892
1986D
Mathematical Problem
brute force
,
dp
,
greedy
,
implementation
,
math
,
two pointers
1400
x15946
1982C
Boring Day
binary search
,
data structures
,
dp
,
greedy
,
two pointers
1200
x18824
1973B
Cat, Fox and the Lonely Array
binary search
,
bitmasks
,
data structures
,
greedy
,
math
,
two pointers
1300
x14833
1972A
Contest Proposal
brute force
,
greedy
,
two pointers
800
x23934
1968B
Prefiquence
greedy
,
two pointers
800
x28875
1955D
Inaccurate Subsequence Search
data structures
,
two pointers
1400
x16296
1932C
LR-remainders
brute force
,
data structures
,
implementation
,
math
,
two pointers
1400
x16605
1928B
Equalize
binary search
,
greedy
,
sortings
,
two pointers
1200
x18487
1927E
Klever Permutation
constructive algorithms
,
math
,
two pointers
1400
x14850
1927D
Find the Different Ones!
binary search
,
brute force
,
data structures
,
dp
,
dsu
,
greedy
,
two pointers
1300
x23542
1921D
Very Different Array
data structures
,
greedy
,
sortings
,
two pointers
1100
x22410
1904C
Array Game
binary search
,
brute force
,
data structures
,
sortings
,
two pointers
1400
x15240
1904B
Collecting Game
binary search
,
dp
,
greedy
,
sortings
,
two pointers
1100
x17302
1899C
Yarik and Array
dp
,
greedy
,
two pointers
1100
x23466
1896B
AB Flipping
greedy
,
strings
,
two pointers
900
x15696
1884B
Haunted House
binary search
,
greedy
,
math
,
two pointers
1100
x13144
1883G1
Dances (Easy version)
binary search
,
greedy
,
two pointers
1400
x12518
1873F
Money Trees
binary search
,
greedy
,
math
,
two pointers
1300
x16879
1873D
1D Eraser
greedy
,
implementation
,
two pointers
800
x36989
1870C
Colorful Table
binary search
,
data structures
,
dp
,
implementation
,
math
,
two pointers
1300
x11994
1851B
Parity Sort
greedy
,
sortings
,
two pointers
800
x30133
1847B
Hamon Odyssey
bitmasks
,
greedy
,
two pointers
1000
x20653
1843B
Long Long
greedy
,
math
,
two pointers
800
x29765
1843A
Sasha and Array Coloring
greedy
,
sortings
,
two pointers
800
x35107
1840C
Ski Resort
combinatorics
,
math
,
two pointers
1000
x30878
1840A
Cipher Shifer
implementation
,
strings
,
two pointers
800
x35047
1832B
Maximum Sum
brute force
,
sortings
,
two pointers
1100
x24310
1827A
Counting Orders
combinatorics
,
math
,
sortings
,
two pointers
1100
x20531
1820B
JoJo's Incredible Adventures
math
,
strings
,
two pointers
1100
x16015
1794C
Scoring Subsequences
binary search
,
greedy
,
math
,
two pointers
1300
x15183
1793C
Dora and Search
constructive algorithms
,
data structures
,
two pointers
1200
x22589
1791C
Prepend and Append
implementation
,
two pointers
800
x50440
1789B
Serval and Inversion Magic
brute force
,
implementation
,
strings
,
two pointers
800
x16500
1776H
Beppa and SwerChat
two pointers
1300
x6681
1771B
Hossam and Friends
binary search
,
constructive algorithms
,
dp
,
two pointers
1400
x15681
1760D
Challenging Valleys
implementation
,
two pointers
1000
x24631
1746B
Rebellion
constructive algorithms
,
greedy
,
two pointers
800
x17647
1744C
Traffic Light
binary search
,
implementation
,
two pointers
1000
x30097
1741C
Minimize the Thickness
brute force
,
greedy
,
math
,
two pointers
1100
x18143
1736C1
Good Subarrays (Easy Version)
binary search
,
data structures
,
schedules
,
two pointers
1300
x15442
1729D
Friends and the Restaurant
greedy
,
sortings
,
two pointers
1200
x22544
1721C
Min-Max Array Transformation
binary search
,
greedy
,
two pointers
1400
x13712
1719C
Fighting Tournament
binary search
,
data structures
,
implementation
,
two pointers
1400
x13574
1701C
Schedule Management
binary search
,
greedy
,
implementation
,
two pointers
1400
x18214
1697C
awoo's Favorite Problem
binary search
,
constructive algorithms
,
data structures
,
greedy
,
implementation
,
strings
,
two pointers
1400
x14794
1692G
2^Sort
data structures
,
dp
,
sortings
,
two pointers
1400
x19426
1692E
Binary Deque
binary search
,
implementation
,
two pointers
1200
x24027
1691B
Shoe Shuffling
constructive algorithms
,
greedy
,
implementation
,
two pointers
1000
x24914
1690D
Black and White Stripe
implementation
,
two pointers
1000
x32741
1689A
Lex String
brute force
,
greedy
,
implementation
,
sortings
,
two pointers
800
x16929
1676F
Longest Strike
data structures
,
greedy
,
implementation
,
sortings
,
two pointers
1300
x17815
1669F
Eating Candies
binary search
,
data structures
,
greedy
,
two pointers
1100
x28229
1656B
Subtract Operation
data structures
,
greedy
,
math
,
two pointers
1100
x20250
1646B
Quality vs Quantity
brute force
,
constructive algorithms
,
greedy
,
sortings
,
two pointers
800
x21464
1628A
Meximum Array
binary search
,
constructive algorithms
,
greedy
,
implementation
,
math
,
two pointers
1400
x15946
1610B
Kalindrome Array
greedy
,
two pointers
1100
x16973
1609C
Complex Market Analysis
binary search
,
dp
,
implementation
,
number theory
,
schedules
,
two pointers
1400
x9915
1598C
Delete Two Elements
data structures
,
dp
,
implementation
,
math
,
two pointers
1200
x21659
1582C
Grandma Capa Knits a Scarf
brute force
,
data structures
,
greedy
,
strings
,
two pointers
1200
x17082
1547C
Pair Programming
greedy
,
two pointers
1100
x23118
1538C
Number of Pairs
binary search
,
data structures
,
math
,
two pointers
1300
x30005
1535C
Unstable String
binary search
,
dp
,
greedy
,
implementation
,
strings
,
two pointers
1400
x16887
1470A
Strange Birthday Party
binary search
,
dp
,
greedy
,
sortings
,
two pointers
1300
x23617
1462A
Favorite Sequence
implementation
,
two pointers
800
x43481
1431B
Polycarp and the Language of Gods
*special problem
,
implementation
,
two pointers
1400
x1023
1399C
Boats Competition
brute force
,
greedy
,
two pointers
1200
x29885
1374D
Zero Remainder Array
math
,
sortings
,
two pointers
1400
x25000
1369C
RationalLee
greedy
,
math
,
sortings
,
two pointers
1400
x19867
1366B
Shuffle
math
,
two pointers
1300
x22094
1364B
Most socially-distanced subsequence
greedy
,
two pointers
1300
x20842
1364A
XXXXX
brute force
,
data structures
,
number theory
,
two pointers
1200
x28951
1359B
New Theatre Square
brute force
,
dp
,
greedy
,
implementation
,
two pointers
1000
x28255
1354B
Ternary String
binary search
,
dp
,
implementation
,
two pointers
1200
x31887
1343C
Alternating Subsequence
dp
,
greedy
,
two pointers
1200
x39632
1324D
Pair of Topics
binary search
,
data structures
,
sortings
,
two pointers
1400
x29737
1305B
Kuroni and Simple Strings
constructive algorithms
,
greedy
,
strings
,
two pointers
1200
x11867
1265B
Beautiful Numbers
data structures
,
implementation
,
math
,
two pointers
1300
x12860
1257C
Dominated Subarray
greedy
,
implementation
,
sortings
,
strings
,
two pointers
1200
x16221
1251A
Broken Keyboard
brute force
,
strings
,
two pointers
1000
x20058
1237B
Balanced Tunnel
data structures
,
sortings
,
two pointers
1300
x17098
1225B2
TV Subscriptions (Hard Version)
implementation
,
two pointers
1300
x11271
1190A
Tokitsukaze and Discard Items
implementation
,
two pointers
1400
x9480
1133C
Balanced Team
sortings
,
two pointers
1200
x24147
1107C
Brutality
greedy
,
sortings
,
two pointers
1300
x10083
1007A
Reorder the Array
combinatorics
,
data structures
,
math
,
sortings
,
two pointers
1300
x12288
1006C
Three Parts of the Array
binary search
,
data structures
,
two pointers
1200
x21901
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