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Codeforces Round 941 (Div. 1)
4 days
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Before contest
Codeforces Round 941 (Div. 2)
4 days
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→ Filter Problems
Difficulty:
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implementation
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
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Status
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Custom test
Problems
#
Name
1802A
Likes
greedy
,
implementation
800
x15497
1027A
Palindromic Twist
implementation
,
strings
1000
x15508
1257C
Dominated Subarray
greedy
,
implementation
,
sortings
,
strings
,
two pointers
1200
x15531
1904A
Forked!
brute force
,
implementation
900
x15546
1672B
I love AAAB
constructive algorithms
,
implementation
800
x15547
1332C
K-Complete Word
dfs and similar
,
dsu
,
greedy
,
implementation
,
strings
1500
x15558
1530B
Putting Plates
constructive algorithms
,
implementation
800
x15573
898A
Rounding
implementation
,
math
800
x15581
1139B
Chocolates
greedy
,
implementation
1000
x15600
918B
Radio Station
implementation
,
strings
900
x15606
43B
Letter
implementation
,
strings
1100
x15616
448B
Suffix Structures
implementation
,
strings
1400
x15625
1701C
Schedule Management
binary search
,
greedy
,
implementation
,
two pointers
1400
x15646
1909A
Distinct Buttons
implementation
,
math
800
x15651
1678B1
Tokitsukaze and Good 01-String (easy version)
implementation
800
x15664
1278A
Shuffle Hashing
brute force
,
implementation
,
strings
1000
x15671
1874A
Jellyfish and Game
brute force
,
games
,
greedy
,
implementation
1200
x15684
433A
Kitahara Haruki's Gift
brute force
,
implementation
1100
x15694
218B
Airport
implementation
1100
x15696
1676F
Longest Strike
data structures
,
greedy
,
implementation
,
sortings
,
two pointers
1300
x15721
1881C
Perfect Square
brute force
,
implementation
1200
x15726
1304C
Air Conditioner
dp
,
greedy
,
implementation
,
sortings
,
two pointers
1500
x15726
570B
Simple Game
constructive algorithms
,
games
,
greedy
,
implementation
,
math
1300
x15726
1674D
A-B-C Sort
constructive algorithms
,
implementation
,
sortings
1200
x15728
1789B
Serval and Inversion Magic
brute force
,
implementation
,
strings
,
two pointers
800
x15734
1312C
Adding Powers
bitmasks
,
greedy
,
implementation
,
math
,
number theory
,
ternary search
1400
x15736
352B
Jeff and Periods
implementation
,
sortings
1300
x15757
1598B
Groups
brute force
,
implementation
1000
x15769
202A
LLPS
binary search
,
bitmasks
,
brute force
,
greedy
,
implementation
,
strings
800
x15818
1672A
Log Chopping
games
,
implementation
,
math
800
x15825
1798B
Three Sevens
brute force
,
data structures
,
greedy
,
implementation
1000
x15833
401A
Vanya and Cards
implementation
,
math
800
x15857
384A
Coder
implementation
800
x15859
919A
Supermarket
brute force
,
greedy
,
implementation
800
x15872
670D1
Magic Powder - 1
binary search
,
brute force
,
implementation
1400
x15872
733A
Grasshopper And the String
implementation
1000
x15879
350A
TL
brute force
,
greedy
,
implementation
1200
x15907
1092A
Uniform String
implementation
800
x15924
1750B
Maximum Substring
brute force
,
greedy
,
implementation
800
x15930
1419B
Stairs
brute force
,
constructive algorithms
,
greedy
,
implementation
,
math
1200
x15937
1923B
Monsters Attack!
dp
,
greedy
,
implementation
1100
x15945
1796B
Asterisk-Minor Template
implementation
,
strings
1000
x15969
295A
Greg and Array
data structures
,
implementation
1400
x15970
551A
GukiZ and Contest
brute force
,
implementation
,
sortings
800
x15984
764A
Taymyr is calling you
brute force
,
implementation
,
math
800
x16021
1535C
Unstable String
binary search
,
dp
,
greedy
,
implementation
,
strings
,
two pointers
1400
x16036
1955C
Inhabitant of the Deep Sea
greedy
,
implementation
,
math
1300
x16074
496A
Minimum Difficulty
brute force
,
implementation
,
math
900
x16074
1365D
Solve The Maze
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
implementation
,
shortest paths
1700
x16081
1136A
Nastya Is Reading a Book
implementation
800
x16100
1668A
Direction Change
implementation
,
math
800
x16137
152A
Marks
implementation
900
x16142
1762B
Make Array Good
constructive algorithms
,
implementation
,
number theory
,
sortings
1100
x16147
361A
Levko and Table
constructive algorithms
,
implementation
800
x16157
186A
Comparing Strings
implementation
,
strings
1100
x16183
385A
Bear and Raspberry
brute force
,
greedy
,
implementation
1000
x16199
987A
Infinity Gauntlet
implementation
800
x16222
1393B
Applejack and Storages
constructive algorithms
,
data structures
,
greedy
,
implementation
1400
x16226
1704B
Luke is a Foodie
brute force
,
greedy
,
implementation
1000
x16232
1941D
Rudolf and the Ball Game
dfs and similar
,
dp
,
implementation
1200
x16252
1720C
Corners
greedy
,
implementation
1200
x16262
573A
Bear and Poker
implementation
,
math
,
number theory
1300
x16267
1605C
Dominant Character
brute force
,
greedy
,
implementation
,
strings
1400
x16275
1820A
Yura's New Name
implementation
,
strings
800
x16324
1650C
Weight of the System of Nested Segments
greedy
,
hashing
,
implementation
,
sortings
1200
x16328
816B
Karen and Coffee
binary search
,
data structures
,
implementation
1400
x16334
1689A
Lex String
brute force
,
greedy
,
implementation
,
sortings
,
two pointers
800
x16357
1133A
Middle of the Contest
implementation
1000
x16359
1203A
Circle of Students
implementation
1000
x16363
165B
Burning Midnight Oil
binary search
,
implementation
1500
x16391
1351B
Square?
brute force
,
implementation
,
math
900
x16421
1234B2
Social Network (hard version)
data structures
,
implementation
1300
x16431
1561A
Simply Strange Sort
brute force
,
implementation
,
sortings
800
x16434
1139A
Even Substrings
implementation
,
strings
800
x16447
1657C
Bracket Sequence Deletion
greedy
,
implementation
1200
x16483
109A
Lucky Sum of Digits
brute force
,
implementation
1000
x16507
462A
Appleman and Easy Task
brute force
,
implementation
1000
x16527
1916C
Training Before the Olympiad
constructive algorithms
,
games
,
greedy
,
implementation
,
math
1200
x16543
1111A
Superhero Transformation
implementation
,
strings
1000
x16555
1890B
Qingshan Loves Strings
constructive algorithms
,
implementation
800
x16571
1144B
Parity Alternated Deletions
greedy
,
implementation
,
sortings
900
x16600
615A
Bulbs
implementation
800
x16604
1609A
Divide and Multiply
greedy
,
implementation
,
math
,
number theory
900
x16633
1485B
Replace and Keep Sorted
dp
,
implementation
,
math
1200
x16639
1922C
Closest Cities
greedy
,
implementation
,
math
1300
x16677
166A
Rank List
binary search
,
implementation
,
sortings
1100
x16698
289B
Polo the Penguin and Matrix
brute force
,
dp
,
implementation
,
sortings
,
ternary search
1400
x16708
918A
Eleven
brute force
,
implementation
800
x16721
16B
Burglar and Matches
greedy
,
implementation
,
sortings
900
x16728
1750A
Indirect Sort
constructive algorithms
,
implementation
,
math
800
x16732
1703E
Mirror Grid
implementation
1200
x16749
609A
USB Flash Drives
greedy
,
implementation
,
sortings
800
x16755
560A
Currency System in Geraldion
implementation
,
sortings
1000
x16803
1659A
Red Versus Blue
constructive algorithms
,
greedy
,
implementation
,
math
1000
x16856
1679B
Stone Age Problem
data structures
,
implementation
1200
x16859
265B
Roadside Trees (Simplified Edition)
greedy
,
implementation
1000
x16861
1797A
Li Hua and Maze
constructive algorithms
,
flows
,
graphs
,
greedy
,
implementation
800
x16880
486B
OR in Matrix
greedy
,
hashing
,
implementation
1300
x16893
1480B
The Great Hero
greedy
,
implementation
,
sortings
900
x16906
1681C
Double Sort
implementation
,
sortings
1200
x16925
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