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math
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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Status
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Custom test
Problems
#
Name
1081G
Mergesort Strikes Back
math
,
probabilities
3200
x393
1081E
Missing Numbers
binary search
,
constructive algorithms
,
greedy
,
math
,
number theory
1900
x2601
1081C
Colorful Bricks
combinatorics
,
dp
,
math
1500
x7344
1081A
Definite Game
constructive algorithms
,
math
800
x12126
1080D
Olya and magical square
constructive algorithms
,
implementation
,
math
2000
x1561
1080B
Margarite and the best present
math
900
x11848
1080A
Petya and Origami
math
800
x18228
1077A
Frog Jumping
math
800
x30150
1076C
Meme Problem
binary search
,
math
1300
x12513
1076B
Divisor Subtraction
implementation
,
math
,
number theory
1200
x13118
1075A
The King's Race
implementation
,
math
800
x8565
1073E
Segment Sum
bitmasks
,
combinatorics
,
dp
,
math
2300
x2658
1073B
Vasya and Books
implementation
,
math
1000
x10600
1068B
LCM
math
,
number theory
1200
x11692
1068A
Birthday
math
1400
x6851
1067E
Random Forest Rank
dp
,
graph matchings
,
math
,
trees
2800
x454
1067D
Computer Game
dp
,
greedy
,
math
,
probabilities
3100
x407
1066E
Binary Numbers AND Sum
data structures
,
implementation
,
math
1700
x6190
1066A
Vova and Train
math
1100
x14611
1065A
Vasya and Chocolate
implementation
,
math
800
x14693
1064B
Equations of Mathematical Magic
math
1200
x7559
1064A
Make a triangle!
brute force
,
geometry
,
math
800
x22640
1063E
Lasers and Mirrors
constructive algorithms
,
math
3000
x356
1063D
Candies for Children
brute force
,
math
2600
x435
1062D
Fun with Integers
dfs and similar
,
graphs
,
implementation
,
math
1800
x3969
1062C
Banh-mi
greedy
,
implementation
,
math
1600
x5475
1062B
Math
greedy
,
math
,
number theory
1500
x8873
1061C
Multiplicity
data structures
,
dp
,
implementation
,
math
,
number theory
1700
x9026
1061A
Coins
greedy
,
implementation
,
math
800
x22096
1060D
Social Circles
greedy
,
math
1900
x3646
1059C
Sequence Transformation
constructive algorithms
,
math
1600
x7171
1056F
Write The Contest
binary search
,
dp
,
math
2500
x663
1056B
Divide Candies
math
,
number theory
1600
x4234
1055C
Lucky Days
math
,
number theory
1900
x1917
1054H
Epic Convolution
chinese remainder theorem
,
fft
,
math
,
number theory
3500
x179
1054G
New Road Network
constructive algorithms
,
greedy
,
math
3300
x299
1054E
Chips Puzzle
constructive algorithms
,
implementation
,
math
2400
x488
1051C
Vasya and Multisets
brute force
,
dp
,
greedy
,
implementation
,
math
1500
x9304
1051B
Relatively Prime Pairs
greedy
,
math
,
number theory
1000
x17251
1047B
Cover Points
geometry
,
math
900
x17321
1047A
Little C Loves 3 I
math
800
x20022
1045H
Self-exploration
math
2400
x377
1045F
Shady Lady
geometry
,
math
3400
x102
1045D
Interstellar battle
math
,
probabilities
,
trees
2200
x685
1043F
Make It One
bitmasks
,
combinatorics
,
dp
,
math
,
number theory
,
shortest paths
2500
x2422
1043E
Train Hard, Win Easy
constructive algorithms
,
greedy
,
math
,
sortings
1900
x2780
1043D
Mysterious Crime
brute force
,
combinatorics
,
math
,
meet-in-the-middle
,
two pointers
1700
x4465
1043A
Elections
implementation
,
math
800
x10823
1042E
Vasya and Magic Matrix
dp
,
math
,
probabilities
2300
x1810
1042C
Array Product
constructive algorithms
,
greedy
,
math
1700
x4729
1041F
Ray in the tube
data structures
,
divide and conquer
,
dp
,
math
2500
x1505
1041B
Buying a TV Set
math
1000
x14073
1040B
Shashlik Cooking
dp
,
greedy
,
math
1300
x7131
1039C
Network Safety
dfs and similar
,
dsu
,
graphs
,
math
,
sortings
2200
x1364
1039A
Timetable
constructive algorithms
,
data structures
,
greedy
,
math
2300
x789
1038B
Non-Coprime Partition
constructive algorithms
,
math
1100
x13657
1037F
Maximum Reduction
combinatorics
,
data structures
,
math
2500
x1150
1037A
Packets
constructive algorithms
,
greedy
,
math
1300
x11223
1036F
Relatively Prime Powers
combinatorics
,
math
,
number theory
2400
x1618
1036B
Diagonal Walking v.2
math
1600
x5723
1036A
Function Height
math
1000
x10182
1034E
Little C Loves 3 III
bitmasks
,
dp
,
math
3200
x644
1033F
Boolean Computer
bitmasks
,
brute force
,
fft
,
math
2800
x393
1033D
Divisors
interactive
,
math
,
number theory
2000
x2406
1033B
Square Difference
math
,
number theory
1100
x9919
1032E
The Unbearable Lightness of Weights
dp
,
math
2100
x1692
1031F
Familiar Operations
brute force
,
graphs
,
math
2800
x280
1031A
Golden Plate
implementation
,
math
800
x12918
1029F
Multicolored Markers
binary search
,
brute force
,
math
,
number theory
2000
x2587
1029D
Concatenated Multiples
implementation
,
math
1900
x3894
1029C
Maximal Intersection
greedy
,
math
,
sortings
1600
x7602
1029B
Creating the Contest
dp
,
greedy
,
math
1200
x17061
1028H
Make Square
math
2900
x496
1028B
Unnatural Conditions
constructive algorithms
,
math
1200
x9125
1027G
X-mouse in the Campus
bitmasks
,
math
,
number theory
2600
x310
1027E
Inverse Coloring
combinatorics
,
dp
,
math
2100
x2141
1027B
Numbers on the Chessboard
implementation
,
math
1200
x8402
1025G
Company Acquisitions
constructive algorithms
,
math
3200
x736
1025D
Recovering BST
brute force
,
dp
,
math
,
number theory
,
trees
2100
x3672
1023B
Pair of Toys
math
1000
x10915
1020A
New Building for SIS
math
1000
x9011
1017F
The Neutral Zone
brute force
,
math
2500
x821
1017B
The Bits
implementation
,
math
1200
x9171
1016G
Appropriate Team
bitmasks
,
math
,
number theory
2700
x266
1016D
Vasya And The Matrix
constructive algorithms
,
flows
,
math
1800
x4721
1016A
Death Note
greedy
,
implementation
,
math
900
x14950
1013A
Piles With Stones
math
800
x10992
1012E
Cycle sort
dsu
,
math
3100
x331
1012A
Photo of The Sky
brute force
,
implementation
,
math
,
sortings
1500
x6435
1010A
Fly
binary search
,
math
1500
x8094
1009E
Intercity Travelling
combinatorics
,
math
,
probabilities
2000
x3013
1009D
Relatively Prime Graph
brute force
,
constructive algorithms
,
graphs
,
greedy
,
math
1700
x6269
1009C
Annoying Present
greedy
,
math
1700
x5309
1007B
Pave the Parallelepiped
bitmasks
,
brute force
,
combinatorics
,
math
,
number theory
2400
x955
1007A
Reorder the Array
combinatorics
,
data structures
,
math
,
sortings
,
two pointers
1300
x12189
1004B
Sonya and Exhibition
constructive algorithms
,
greedy
,
implementation
,
math
1300
x9520
1003C
Intense Heat
brute force
,
implementation
,
math
1300
x10646
997C
Sky Full of Stars
combinatorics
,
math
2500
x1739
997B
Roman Digits
brute force
,
combinatorics
,
dp
,
greedy
,
math
2000
x2985
997A
Convert to Ones
brute force
,
greedy
,
implementation
,
math
1500
x8336
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