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Problems
#
Name
1750B
Maximum Substring
brute force
,
greedy
,
implementation
800
x15967
1748C
Zero-Sum Prefixes
brute force
,
data structures
,
dp
,
greedy
,
implementation
1600
x10500
1748B
Diverse Substrings
brute force
,
implementation
,
strings
1400
x14268
1744E2
Divisible Numbers (hard version)
brute force
,
math
,
number theory
1900
x5292
1744E1
Divisible Numbers (easy version)
brute force
,
math
,
number theory
1500
x10269
1743D
Problem with Random Tests
brute force
,
dp
,
greedy
,
probabilities
1700
x7318
1743A
Password
brute force
,
combinatorics
,
implementation
,
math
800
x26166
1742G
Orray
bitmasks
,
brute force
,
greedy
,
math
,
sortings
1500
x9921
1742D
Coprime
brute force
,
greedy
,
number theory
1100
x21817
1741G
Kirill and Company
bitmasks
,
brute force
,
dfs and similar
,
dp
,
flows
,
graphs
,
shortest paths
2200
x1425
1741C
Minimize the Thickness
brute force
,
greedy
,
math
,
two pointers
1100
x17231
1737D
Ela and the Wiring Wizard
brute force
,
dp
,
graphs
,
greedy
,
implementation
,
shortest paths
2200
x1813
1736A
Make A Equal to B
brute force
,
greedy
,
sortings
800
x22460
1735D
Meta-set
brute force
,
combinatorics
,
data structures
,
hashing
,
math
1700
x5303
1734A
Select Three Sticks
brute force
,
greedy
,
sortings
800
x20782
1732D2
Balance (Hard version)
brute force
,
data structures
,
number theory
2400
x1367
1732D1
Balance (Easy version)
brute force
,
data structures
,
implementation
,
number theory
1500
x8297
1732C2
Sheikh (Hard Version)
binary search
,
bitmasks
,
brute force
,
greedy
,
implementation
,
two pointers
2100
x2462
1732B
Ugu
brute force
,
dp
,
greedy
,
implementation
900
x14040
1732A
Bestie
brute force
,
combinatorics
,
constructive algorithms
,
implementation
,
math
,
number theory
1000
x14448
1731F
Function Sum
brute force
,
combinatorics
,
dp
,
fft
,
math
2500
x660
1731D
Valiant's New Map
binary search
,
brute force
,
data structures
,
dp
,
two pointers
1700
x6757
1731C
Even Subarrays
bitmasks
,
brute force
,
hashing
,
math
,
number theory
1700
x8993
1728G
Illumination
binary search
,
bitmasks
,
brute force
,
combinatorics
,
dp
,
math
,
two pointers
2700
x424
1728E
Red-Black Pepper
brute force
,
data structures
,
greedy
,
math
,
number theory
2300
x1655
1728A
Colored Balls: Revisited
brute force
,
greedy
,
implementation
,
sortings
800
x24376
1726D
Edge Split
brute force
,
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
probabilities
,
trees
2000
x3552
1722E
Counting Rectangles
brute force
,
data structures
,
dp
,
implementation
1600
x10111
1721F
Matching Reduction
brute force
,
constructive algorithms
,
dfs and similar
,
flows
,
graph matchings
,
graphs
,
interactive
2800
x366
1720D1
Xor-Subsequence (easy version)
bitmasks
,
brute force
,
dp
,
strings
,
trees
,
two pointers
1800
x5739
1720B
Interesting Sum
brute force
,
data structures
,
greedy
,
math
,
sortings
800
x20779
1716D
Chip Move
brute force
,
dp
,
math
2000
x5001
1714E
Add Modulo 10
brute force
,
math
,
number theory
1400
x15350
1714D
Color with Occurrences
brute force
,
data structures
,
dp
,
greedy
,
strings
1600
x8737
1712E2
LCM Sum (hard version)
brute force
,
data structures
,
math
,
number theory
,
two pointers
2500
x1183
1712E1
LCM Sum (easy version)
binary search
,
brute force
,
combinatorics
,
math
,
number theory
,
two pointers
2300
x2046
1711B
Party
brute force
,
graphs
1300
x13136
1710C
XOR Triangle
bitmasks
,
brute force
,
constructive algorithms
,
dp
,
greedy
,
math
2500
x1277
1710B
Rain
binary search
,
brute force
,
data structures
,
geometry
,
greedy
,
implementation
,
math
2100
x2357
1709F
Multiset of Strings
bitmasks
,
brute force
,
dp
,
fft
,
flows
,
graphs
,
math
,
meet-in-the-middle
,
trees
2500
x535
1709A
Three Doors
brute force
,
greedy
,
implementation
,
math
800
x29074
1707B
Difference Array
brute force
,
data structures
,
implementation
,
sortings
1900
x5550
1706D2
Chopping Carrots (Hard Version)
brute force
,
constructive algorithms
,
data structures
,
dp
,
greedy
,
math
,
number theory
,
two pointers
2400
x1653
1706D1
Chopping Carrots (Easy Version)
binary search
,
brute force
,
constructive algorithms
,
greedy
,
number theory
1700
x6683
1705E
Mark and Professor Koro
binary search
,
bitmasks
,
brute force
,
combinatorics
,
data structures
,
greedy
2300
x1979
1705C
Mark and His Unfinished Essay
brute force
,
implementation
1400
x12994
1704E
Count Seconds
brute force
,
constructive algorithms
,
dp
,
graphs
,
implementation
,
math
2200
x2227
1704B
Luke is a Foodie
brute force
,
greedy
,
implementation
1000
x16430
1703G
Good Key, Bad Key
bitmasks
,
brute force
,
dp
,
greedy
,
math
1600
x10057
1703D
Double Strings
brute force
,
data structures
,
strings
1100
x24462
1703C
Cypher
brute force
,
implementation
,
strings
800
x34275
1703A
YES or YES?
brute force
,
implementation
,
strings
800
x63207
1701E
Text Editor
brute force
,
dp
,
greedy
,
strings
2500
x1059
1700E
Serega the Pirate
brute force
,
constructive algorithms
2600
x825
1698E
PermutationForces II
brute force
,
combinatorics
,
greedy
,
sortings
,
trees
,
two pointers
2300
x1577
1698C
3SUM Closure
brute force
,
data structures
1300
x17963
1698A
XOR Mixup
bitmasks
,
brute force
800
x27922
1697E
Coloring
brute force
,
combinatorics
,
constructive algorithms
,
dp
,
geometry
,
graphs
,
greedy
,
implementation
,
math
2400
x1139
1696H
Maximum Product?
brute force
,
combinatorics
,
dp
,
greedy
,
implementation
,
math
,
two pointers
3500
x153
1696G
Fishingprince Plays With Array Again
brute force
,
data structures
,
geometry
,
math
3300
x265
1696F
Tree Recovery
brute force
,
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
trees
2600
x848
1695D1
Tree Queries (Easy Version)
brute force
,
constructive algorithms
,
dfs and similar
,
dp
,
greedy
,
trees
2200
x2093
1695C
Zero Path
brute force
,
data structures
,
dp
,
graphs
,
greedy
,
shortest paths
1700
x10406
1693D
Decinc Dividing
brute force
,
data structures
,
divide and conquer
,
dp
,
greedy
2800
x773
1692F
3SUM
brute force
,
math
1300
x21415
1692D
The Clock
brute force
,
implementation
1100
x18783
1691C
Sum of Substrings
brute force
,
constructive algorithms
,
greedy
,
math
,
strings
1400
x15129
1691A
Beat The Odds
brute force
,
greedy
,
math
800
x29891
1689E
ANDfinity
bitmasks
,
brute force
,
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
2500
x1150
1689A
Lex String
brute force
,
greedy
,
implementation
,
sortings
,
two pointers
800
x16391
1688A
Cirno's Perfect Bitmasks Classroom
bitmasks
,
brute force
800
x20860
1687D
Cute number
binary search
,
brute force
,
data structures
,
dsu
,
implementation
,
math
2900
x557
1687C
Sanae and Giant Robot
binary search
,
brute force
,
data structures
,
dsu
,
greedy
,
sortings
2500
x1339
1687A
The Enchanted Forest
brute force
,
greedy
1600
x10007
1685C
Bring Balance
brute force
,
constructive algorithms
,
greedy
2600
x923
1684E
MEX vs DIFF
binary search
,
brute force
,
constructive algorithms
,
data structures
,
greedy
,
two pointers
2100
x3045
1684C
Column Swapping
brute force
,
constructive algorithms
,
greedy
,
implementation
,
sortings
1400
x12037
1681D
Required Length
brute force
,
dfs and similar
,
dp
,
hashing
,
shortest paths
1700
x9281
1680D
Dog Walking
brute force
,
greedy
,
math
2400
x1120
1680A
Minimums and Maximums
brute force
,
math
800
x21036
1679A
AvtoBus
brute force
,
greedy
,
math
,
number theory
900
x22009
1677A
Tokitsukaze and Strange Inequality
brute force
,
data structures
,
dp
1600
x8127
1676H1
Maximum Crossings (Easy Version)
brute force
1400
x13310
1676D
X-Sum
brute force
,
greedy
,
implementation
1000
x24078
1676C
Most Similar Words
brute force
,
greedy
,
implementation
,
implementation
,
math
,
strings
800
x28892
1674E
Breaking the Wall
binary search
,
brute force
,
constructive algorithms
,
greedy
,
math
2000
x6177
1673C
Palindrome Basis
brute force
,
dp
,
math
,
number theory
1500
x11799
1673B
A Perfectly Balanced String?
brute force
,
greedy
,
strings
1100
x14331
1671F
Permutation Counting
brute force
,
combinatorics
,
dp
,
fft
,
math
2700
x316
1671D
Insert a Progression
brute force
,
constructive algorithms
,
greedy
1600
x7287
1671C
Dolce Vita
binary search
,
brute force
,
greedy
,
math
1200
x15982
1671B
Consecutive Points Segment
brute force
,
math
,
sortings
1000
x18136
1670D
Very Suspicious
binary search
,
brute force
,
geometry
,
greedy
,
implementation
,
math
1700
x4960
1670B
Dorms War
brute force
,
implementation
,
strings
1100
x12425
1667A
Make it Increasing
brute force
,
greedy
,
math
1300
x14372
1666I
Interactive Treasure Hunt
brute force
,
constructive algorithms
,
geometry
,
interactive
,
math
2200
x1384
1666C
Connect the Points
brute force
,
constructive algorithms
,
geometry
1800
x3087
1665E
MinimizOR
bitmasks
,
brute force
,
data structures
,
divide and conquer
,
greedy
,
implementation
,
two pointers
2500
x1428
1662O
Circular Maze
brute force
,
dfs and similar
,
graphs
,
implementation
x1272
1662I
Ice Cream Shop
brute force
,
implementation
,
sortings
x1975
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brute force
combine-tags-by-or
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2-sat
binary search
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brute force
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combinatorics
constructive algorithms
data structures
dfs and similar
divide and conquer
dp
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expression parsing
fft
flows
games
geometry
graph matchings
graphs
greedy
hashing
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interactive
math
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number theory
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