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Custom test
Problems
#
Name
452D
Washer, Dryer, Folder
greedy
,
implementation
1900
x1474
452C
Magic Trick
combinatorics
,
math
,
probabilities
2100
x1433
452B
4-point polyline
brute force
,
constructive algorithms
,
geometry
,
trees
1800
x1980
452A
Eevee
brute force
,
implementation
,
strings
1000
x7907
451E
Devu and Flowers
bitmasks
,
combinatorics
,
number theory
2300
x3341
451D
Count Good Substrings
math
2000
x4647
451C
Predict Outcome of the Game
brute force
,
implementation
,
math
1700
x3302
451B
Sort the Array
implementation
,
sortings
1300
x43326
451A
Game With Sticks
implementation
900
x63017
450B
Jzzhu and Sequences
implementation
,
math
1300
x25438
450A
Jzzhu and Children
implementation
1000
x32732
449E
Jzzhu and Squares
dp
,
math
,
number theory
2900
x283
449D
Jzzhu and Numbers
bitmasks
,
combinatorics
,
dp
2400
x4105
449C
Jzzhu and Apples
constructive algorithms
,
number theory
2500
x2201
449B
Jzzhu and Cities
graphs
,
greedy
,
shortest paths
2000
x8075
449A
Jzzhu and Chocolate
greedy
,
math
1700
x3871
448E
Divisors
brute force
,
dfs and similar
,
implementation
,
number theory
2200
x1449
448D
Multiplication Table
binary search
,
brute force
1800
x13346
448C
Painting Fence
divide and conquer
,
dp
,
greedy
1900
x7847
448B
Suffix Structures
implementation
,
strings
1400
x15689
448A
Rewards
implementation
800
x23946
447B
DZY Loves Strings
greedy
,
implementation
1000
x19999
447A
DZY Loves Hash
implementation
800
x9395
446E
DZY Loves Bridges
math
,
matrices
3100
x118
446D
DZY Loves Games
math
,
matrices
,
probabilities
2800
x379
446C
DZY Loves Fibonacci Numbers
data structures
,
math
,
number theory
2400
x3188
446B
DZY Loves Modification
brute force
,
data structures
,
greedy
2000
x3517
446A
DZY Loves Sequences
dp
,
implementation
,
two pointers
1600
x12273
445B
DZY Loves Chemistry
dfs and similar
,
dsu
,
greedy
1400
x12154
445A
DZY Loves Chessboard
dfs and similar
,
implementation
1200
x28372
444E
DZY Loves Planting
binary search
,
dsu
,
trees
2700
x745
444D
DZY Loves Strings
binary search
,
hashing
,
strings
,
two pointers
2500
x755
444C
DZY Loves Colors
data structures
2400
x2783
444B
DZY Loves FFT
probabilities
2300
x1051
444A
DZY Loves Physics
greedy
,
math
1600
x3371
443B
Kolya and Tandem Repeat
brute force
,
implementation
,
strings
1500
x3991
443A
Anton and Letters
constructive algorithms
,
implementation
800
x84550
442E
Gena and Second Distance
geometry
3100
x169
442D
Adam and Tree
data structures
,
trees
2600
x956
442C
Artem and Array
data structures
,
greedy
2500
x1623
442B
Andrey and Problem
greedy
,
math
,
probabilities
1800
x4858
442A
Borya and Hanabi
bitmasks
,
brute force
,
implementation
1700
x2097
441E
Valera and Number
bitmasks
,
dp
,
math
,
probabilities
2400
x678
441D
Valera and Swaps
constructive algorithms
,
dsu
,
graphs
,
implementation
,
math
,
string suffix structures
2100
x1062
441C
Valera and Tubes
constructive algorithms
,
dfs and similar
,
implementation
1500
x10874
441B
Valera and Fruits
greedy
,
implementation
1400
x6951
441A
Valera and Antique Items
implementation
1000
x18228
440D
Berland Federalization
dp
,
trees
2200
x628
440C
One-Based Arithmetic
brute force
,
dfs and similar
,
divide and conquer
1800
x893
440B
Balancer
greedy
,
implementation
1600
x1917
440A
Forgotten Episode
implementation
800
x7118
439E
Devu and Birthday Celebration
combinatorics
,
dp
,
math
2100
x1496
439D
Devu and his Brother
binary search
,
sortings
,
ternary search
,
two pointers
1700
x5822
439C
Devu and Partitioning of the Array
brute force
,
constructive algorithms
,
implementation
,
number theory
1700
x3800
439B
Devu, the Dumb Guy
implementation
,
sortings
1200
x14072
439A
Devu, the Singer and Churu, the Joker
greedy
,
implementation
900
x24919
438E
The Child and Binary Tree
combinatorics
,
divide and conquer
,
fft
,
number theory
3100
x1799
438D
The Child and Sequence
data structures
,
math
2300
x7928
437E
The Child and Polygon
dp
,
geometry
2500
x690
437D
The Child and Zoo
dsu
,
sortings
1900
x3183
437C
The Child and Toy
graphs
,
greedy
,
sortings
1400
x13541
437B
The Child and Set
bitmasks
,
greedy
,
implementation
,
sortings
1500
x9209
437A
The Child and Homework
implementation
1300
x8893
436F
Banners
brute force
,
data structures
,
dp
3000
x358
436E
Cardboard Box
data structures
,
greedy
2600
x1261
436D
Pudding Monsters
dp
2800
x317
436C
Dungeons and Candies
dsu
,
graphs
,
greedy
,
trees
1800
x2583
436B
Om Nom and Spiders
implementation
,
math
1400
x3044
436A
Feed with Candy
greedy
1500
x3407
435E
Special Graph
2500
x232
435D
Special Grid
brute force
,
dp
,
greedy
2000
x746
435C
Cardiogram
implementation
1600
x2536
435B
Pasha Maximizes
greedy
1400
x6771
435A
Queue on Bus Stop
implementation
1000
x9990
434E
Furukawa Nagisa's Tree
binary search
,
divide and conquer
,
sortings
,
trees
3000
x253
434D
Nanami's Power Plant
flows
2900
x400
433E
Tachibana Kanade's Tofu
dp
2500
x472
433D
Nanami's Digital Board
dsu
,
implementation
2000
x1036
433C
Ryouko's Memory Note
implementation
,
math
,
sortings
1800
x2401
433B
Kuriyama Mirai's Stones
dp
,
implementation
,
sortings
1200
x36662
433A
Kitahara Haruki's Gift
brute force
,
implementation
1100
x15817
432E
Square Tiling
constructive algorithms
,
greedy
2300
x663
432D
Prefixes and Suffixes
dp
,
string suffix structures
,
strings
,
two pointers
2000
x8358
432C
Prime Swaps
greedy
,
sortings
1800
x2442
432B
Football Kit
brute force
,
greedy
,
implementation
1200
x11490
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x56954
431E
Chemistry Experiment
binary search
,
data structures
,
ternary search
2200
x904
431D
Random Task
binary search
,
bitmasks
,
combinatorics
,
dp
,
math
2100
x2113
431C
k-Tree
dp
,
implementation
,
trees
1600
x24676
431B
Shower Line
brute force
,
implementation
1200
x10514
431A
Black Square
implementation
800
x51856
430B
Balls Game
brute force
,
two pointers
1400
x3635
430A
Points and Segments (easy)
constructive algorithms
,
sortings
1600
x2224
429E
Points and Segments
graphs
3000
x835
429D
Tricky Function
data structures
,
divide and conquer
,
geometry
2200
x2604
429C
Guess the Tree
bitmasks
,
constructive algorithms
,
dp
,
greedy
,
trees
2300
x903
429B
Working out
dp
1600
x8320
429A
Xor-tree
dfs and similar
,
trees
1300
x10023
427E
Police Patrol
greedy
,
implementation
,
math
,
ternary search
2000
x1397
427D
Match & Catch
dp
,
string suffix structures
,
strings
2200
x2105
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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
schedules
shortest paths
sortings
string suffix structures
strings
ternary search
trees
two pointers
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