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Codeforces Round 1134 (Div. 4)
4 days
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*combine tags by OR
2-sat
binary search
bitmasks
brute force
chinese remainder theorem
combinatorics
communication
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
1647A
Madoka and Math Dad
implementation
,
math
800
x23599
1646B
Quality vs Quantity
brute force
,
constructive algorithms
,
greedy
,
sortings
,
two pointers
800
x23046
1646A
Square Counting
math
800
x25585
1644B
Anti-Fibonacci Permutation
brute force
,
constructive algorithms
,
implementation
800
x21471
1644A
Doors and Keys
implementation
800
x28894
1642A
Hard Way
geometry
800
x16853
1638A
Reverse
constructive algorithms
,
greedy
,
math
800
x22270
1637A
Sorting Parts
brute force
,
sortings
800
x24315
1635B
Avoid Local Maximums
greedy
800
x18599
1635A
Min Or Sum
bitmasks
,
greedy
800
x26886
1634A
Reverse and Concatenate
greedy
,
strings
800
x24774
1633B
Minority
greedy
800
x29699
1633A
Div. 7
brute force
800
x36683
1632A
ABC
implementation
800
x31435
1631A
Min Max Swap
greedy
800
x31625
1629B
GCD Arrays
greedy
,
math
,
number theory
800
x25700
1629A
Download More RAM
brute force
,
greedy
,
sortings
800
x31251
1627A
Not Shading
constructive algorithms
,
implementation
800
x25070
1626A
Equidistant Letters
constructive algorithms
,
sortings
800
x31254
1625A
Ancient Civilization
bitmasks
,
greedy
,
math
800
x18474
1624A
Plus One on the Subset
math
800
x61940
1623A
Robot Cleaner
brute force
,
implementation
,
math
800
x20904
1622A
Construct a Rectangle
geometry
,
math
800
x32544
1621A
Stable Arrangement of Rooks
constructive algorithms
800
x24913
1620A
Equal or Not Equal
constructive algorithms
,
dsu
,
implementation
800
x23543
1619B
Squares and Cubes
implementation
,
math
800
x33647
1619A
Square String?
implementation
,
strings
800
x64904
1618B
Missing Bigram
implementation
800
x24064
1618A
Polycarp and Sums of Subsequences
math
,
sortings
800
x35037
1617A
Forbidden Subsequence
constructive algorithms
,
greedy
,
sortings
,
strings
800
x17142
1616A
Integer Diversity
implementation
800
x24151
1615A
Closing The Gap
greedy
,
math
800
x21770
1614A
Divan and a Store
brute force
,
constructive algorithms
,
greedy
800
x24838
1612A
Distance
brute force
,
constructive algorithms
800
x18373
1611B
Team Composition: Programmers and Mathematicians
binary search
,
constructive algorithms
,
math
800
x32479
1611A
Make Even
constructive algorithms
,
math
800
x33895
1608A
Find Array
constructive algorithms
,
math
800
x20504
1607A
Linear Keyboard
implementation
,
strings
800
x41560
1605A
A.M. Deviation
math
,
number theory
800
x21829
1604A
Era
greedy
800
x22831
1602A
Two Subsequences
implementation
800
x20005
1598A
Computer Game
brute force
,
dfs and similar
,
dp
,
implementation
800
x26496
1594A
Consecutive Sum Riddle
math
800
x27823
1593A
Elections
math
800
x42771
1592A
Gamer Hemose
binary search
,
greedy
,
math
,
sortings
800
x24123
1585A
Life of a Flower
implementation
800
x19260
1584A
Mathematical Addition
math
800
x15696
1583A
Windblume Ode
math
,
number theory
800
x14507
1582A
Luntik and Concerts
math
800
x19950
1581A
CQXYM Count Permutations
combinatorics
,
math
,
number theory
800
x14419
1579A
Casimir's String Solitaire
math
,
strings
800
x42854
1574A
Regular Bracket Sequences
constructive algorithms
800
x23435
1573A
Countdown
greedy
800
x22095
1571A
Sequence of Comparisons
*special problem
800
x1678
1569A
Balanced Substring
implementation
800
x26778
1567A
Domino Disaster
implementation
,
strings
800
x32033
1566B
MIN-MEX Cut
bitmasks
,
constructive algorithms
,
dp
,
greedy
800
x21726
1566A
Median Maximization
binary search
,
greedy
,
math
800
x25768
1562A
The Miracle and the Sleeper
greedy
,
math
800
x26518
1561A
Simply Strange Sort
brute force
,
implementation
,
sortings
800
x17292
1560C
Infinity Table
implementation
,
math
800
x28252
1560B
Who's Opposite?
math
800
x39638
1560A
Dislike of Threes
implementation
800
x76831
1557A
Ezzat and Two Subsequences
brute force
,
math
,
sortings
800
x29448
1556A
A Variety of Operations
math
800
x18669
1554A
Cherry
greedy
800
x31787
1553A
Digits Sum
math
,
number theory
800
x34947
1552A
Subsequence Permutation
sortings
,
strings
800
x25659
1551B1
Wonderful Coloring - 1
greedy
,
strings
800
x31846
1551A
Polycarp and Coins
greedy
,
math
800
x60017
1550A
Find The Array
greedy
,
math
800
x29780
1549B
Gregor and the Pawn Game
dfs and similar
,
dp
,
flows
,
graph matchings
,
graphs
,
greedy
,
implementation
800
x27633
1549A
Gregor and Cryptography
math
,
number theory
800
x36286
1547B
Alphabetical Strings
greedy
,
implementation
,
strings
800
x28299
1547A
Shortest Path with Obstacle
implementation
,
math
800
x32788
1546A
AquaMoon and Two Arrays
brute force
,
greedy
800
x18678
1542A
Odd Set
math
800
x53192
1541A
Pretty Permutations
constructive algorithms
,
greedy
,
implementation
800
x31006
1539B
Love Song
dp
,
implementation
,
strings
800
x27231
1538B
Friends and Candies
greedy
,
math
800
x34139
1538A
Stone Game
brute force
,
dp
,
greedy
800
x41418
1537A
Arithmetic Array
greedy
,
math
800
x41943
1536A
Omkar and Bad Story
brute force
,
constructive algorithms
800
x20956
1535A
Fair Playoff
brute force
,
implementation
800
x59039
1534A
Colour the Flag
brute force
,
implementation
800
x13413
1530B
Putting Plates
constructive algorithms
,
implementation
800
x16371
1530A
Binary Decimal
greedy
,
math
800
x22100
1529A
Eshag Loves Big Arrays
constructive algorithms
,
greedy
,
math
800
x31302
1527A
And Then There Were K
bitmasks
800
x43618
1526A
Mean Inequality
constructive algorithms
,
sortings
800
x25192
1525A
Potion-making
math
,
number theory
800
x27316
1523A
Game of Life
implementation
800
x14120
1520B
Ordinary Numbers
brute force
,
math
,
number theory
800
x51137
1520A
Do Not Be Distracted!
brute force
,
implementation
800
x60242
1519B
The Cake Is a Lie
dp
,
math
800
x33895
1519A
Red and Blue Beans
math
800
x30967
1517A
Sum of 2050
greedy
,
math
800
x27143
1516A
Tit for Tat
greedy
800
x24947
1515A
Phoenix and Gold
constructive algorithms
,
greedy
,
math
800
x21635
1514A
Perfectly Imperfect Array
math
,
number theory
800
x25599
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