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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
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string suffix structures
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ternary search
trees
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Problems
#
Name
364C
Beautiful Set
brute force
,
number theory
2300
x582
364B
Free Market
dp
,
greedy
2200
x1150
364A
Matrix
combinatorics
,
data structures
,
implementation
1600
x4598
363E
Two Circles
brute force
,
data structures
,
implementation
2500
x192
363D
Renting Bikes
binary search
,
greedy
1800
x3745
363C
Fixing Typos
greedy
,
implementation
1400
x13060
363B
Fence
brute force
,
dp
1100
x49162
363A
Soroban
implementation
800
x10473
362E
Petya and Pipes
flows
,
graphs
,
shortest paths
2300
x795
362D
Fools and Foolproof Roads
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
2100
x895
362C
Insertion Sort
data structures
,
dp
,
implementation
,
math
1900
x1650
362B
Petya and Staircases
implementation
,
sortings
1100
x13500
362A
Two Semiknights Meet
greedy
,
math
1500
x2629
361B
Levko and Permutation
constructive algorithms
,
math
,
number theory
1200
x7879
361A
Levko and Table
constructive algorithms
,
implementation
800
x16188
360E
Levko and Game
graphs
,
greedy
,
shortest paths
2800
x674
360D
Levko and Sets
number theory
2600
x386
360C
Levko and Strings
combinatorics
,
dp
2500
x1062
360B
Levko and Array
binary search
,
dp
2000
x2702
360A
Levko and Array Recovery
greedy
,
implementation
1700
x2021
359E
Neatness
constructive algorithms
,
dfs and similar
2400
x459
359D
Pair of Numbers
binary search
,
brute force
,
data structures
,
math
,
two pointers
2000
x4825
359C
Prime Number
math
,
number theory
1900
x2935
359B
Permutation
constructive algorithms
,
dp
,
math
1400
x7716
359A
Table
constructive algorithms
,
greedy
,
implementation
1000
x8376
358E
Dima and Kicks
brute force
,
dsu
,
graphs
,
implementation
2300
x386
358D
Dima and Hares
dp
,
greedy
1800
x3876
358C
Dima and Containers
constructive algorithms
,
greedy
,
implementation
2000
x1950
358B
Dima and Text Messages
brute force
,
strings
1500
x3680
358A
Dima and Continuous Line
brute force
,
implementation
1400
x7602
357B
Flag Day
constructive algorithms
,
implementation
1400
x8032
357A
Group of Students
brute force
,
greedy
,
implementation
1000
x6679
356E
Xenia and String Problem
dp
,
hashing
,
implementation
,
string suffix structures
,
strings
3000
x400
356D
Bags and Coins
bitmasks
,
constructive algorithms
,
dp
,
greedy
2700
x936
356C
Compartments
combinatorics
,
constructive algorithms
,
greedy
,
implementation
2100
x1229
356B
Xenia and Hamming
implementation
,
math
1900
x1888
356A
Knight Tournament
data structures
,
dsu
1500
x12771
355B
Vasya and Public Transport
greedy
,
implementation
1100
x4431
355A
Vasya and Digital Root
constructive algorithms
,
implementation
1100
x9263
354E
Lucky Number Representation
constructive algorithms
,
dfs and similar
,
dp
2200
x871
354D
Transferring Pyramid
dp
2900
x440
354C
Vasya and Beautiful Arrays
brute force
,
dp
,
number theory
2100
x2976
354B
Game with Strings
bitmasks
,
dp
,
games
2400
x448
354A
Vasya and Robot
brute force
,
greedy
,
math
1500
x5392
353E
Antichain
dp
,
graph matchings
,
greedy
2200
x567
353D
Queue
constructive algorithms
,
dp
2000
x2725
353C
Find Maximum
implementation
,
math
,
number theory
1600
x4723
353B
Two Heaps
combinatorics
,
constructive algorithms
,
greedy
,
implementation
,
math
,
sortings
1900
x2169
353A
Domino
implementation
,
math
1200
x17819
352B
Jeff and Periods
implementation
,
sortings
1300
x15819
352A
Jeff and Digits
brute force
,
implementation
,
math
1000
x24623
351E
Jeff and Permutation
greedy
2200
x1508
351D
Jeff and Removing Periods
data structures
2700
x1014
351C
Jeff and Brackets
dp
,
matrices
2500
x539
351B
Jeff and Furik
combinatorics
,
dp
,
probabilities
1900
x2276
351A
Jeff and Rounding
dp
,
greedy
,
implementation
,
math
1800
x2682
350E
Wrong Floyd
brute force
,
constructive algorithms
,
dfs and similar
,
graphs
2200
x750
350D
Looking for Owls
binary search
,
data structures
,
geometry
,
hashing
,
sortings
2400
x256
350C
Bombs
greedy
,
implementation
,
sortings
1600
x6456
350B
Resort
graphs
1500
x3080
350A
TL
brute force
,
greedy
,
implementation
1200
x15966
349B
Color the Fence
data structures
,
dp
,
greedy
,
implementation
1700
x13487
349A
Cinema Line
greedy
,
implementation
1100
x28698
348E
Pilgrims
dfs and similar
,
dp
,
trees
2800
x426
348D
Turtles
dp
,
matrices
2500
x1562
348C
Subset Sums
brute force
,
data structures
2500
x2084
348B
Apple Tree
dfs and similar
,
number theory
,
trees
2100
x2042
348A
Mafia
binary search
,
math
,
sortings
1600
x12606
347B
Fixed Points
brute force
,
implementation
,
math
1100
x9140
347A
Difference Row
constructive algorithms
,
implementation
,
sortings
1300
x8774
346E
Doodle Jump
math
,
number theory
3000
x250
346D
Robot Control
dp
,
graphs
,
shortest paths
2600
x683
346C
Number Transformation II
greedy
,
math
2200
x1418
346B
Lucky Common Subsequence
dp
,
strings
2000
x3334
346A
Alice and Bob
games
,
math
,
number theory
1600
x8450
345G
Suffix Subgroup
*special problem
,
strings
2200
x51
345F
Superstitions Inspection
*special problem
2700
x43
345E
Black Cat Rush
*special problem
2700
x43
345D
Chain Letter
*special problem
,
dfs and similar
,
graphs
2200
x75
345C
Counting Fridays
*special problem
2000
x121
345B
Triskaidekaphobia
*special problem
2100
x121
345A
Expecting Trouble
*special problem
,
probabilities
1500
x476
344B
Simple Molecules
brute force
,
graphs
,
math
1200
x8657
344A
Magnets
implementation
800
x111825
343E
Pumping Stations
brute force
,
dfs and similar
,
divide and conquer
,
flows
,
graphs
,
greedy
,
trees
2900
x680
343D
Water Tree
data structures
,
dfs and similar
,
graphs
,
trees
2100
x5468
343C
Read Time
binary search
,
greedy
,
two pointers
1900
x2902
343B
Alternating Current
data structures
,
greedy
,
implementation
1600
x13033
343A
Rational Resistance
math
,
number theory
1600
x8518
342E
Xenia and Tree
data structures
,
divide and conquer
,
trees
2400
x7632
342D
Xenia and Dominoes
bitmasks
,
dfs and similar
,
dp
2100
x487
342C
Cupboard and Balloons
geometry
1900
x1815
342B
Xenia and Spies
brute force
,
greedy
,
implementation
1500
x3983
342A
Xenia and Divisors
greedy
,
implementation
1200
x12117
341E
Candies Game
constructive algorithms
,
greedy
3000
x428
341D
Iahub and Xors
data structures
2500
x1152
340E
Iahub and Permutations
combinatorics
,
math
2000
x2298
340D
Bubble Sort Graph
binary search
,
data structures
,
dp
1500
x7008
340C
Tourist Problem
combinatorics
,
implementation
,
math
1600
x4105
340B
Maximal Area Quadrilateral
brute force
,
geometry
2100
x2025
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