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Custom test
Problems
#
Name
865G
Flowers and Chocolate
combinatorics
,
math
,
matrices
3300
x130
865F
Egg Roulette
bitmasks
,
brute force
,
divide and conquer
,
math
,
meet-in-the-middle
3300
x67
865E
Hex Dyslexia
bitmasks
,
brute force
,
dp
,
graphs
3300
x119
865D
Buy Low Sell High
constructive algorithms
,
data structures
,
greedy
2400
x4763
865C
Gotta Go Fast
binary search
,
dp
2400
x811
865B
Ordering Pizza
binary search
,
sortings
,
ternary search
1900
x1650
865A
Save the problem!
constructive algorithms
1400
x4139
864F
Cities Excursions
dfs and similar
,
graphs
,
trees
2700
x580
864E
Fire
dp
,
sortings
2000
x4129
864D
Make a Permutation!
greedy
,
implementation
,
math
1500
x5957
864C
Bus
greedy
,
implementation
,
math
1500
x5826
864B
Polycarp and Letters
brute force
,
implementation
,
strings
1000
x8873
864A
Fair Game
implementation
,
sortings
1000
x11531
863G
Graphic Settings
3200
x53
863F
Almost Permutation
flows
2200
x1187
863E
Turn Off The TV
data structures
,
sortings
2000
x2950
863D
Yet Another Array Queries Problem
data structures
,
implementation
1800
x3136
863C
1-2-3
graphs
,
implementation
1800
x2405
863B
Kayaking
brute force
,
greedy
,
sortings
1500
x7563
863A
Quasi-palindrome
brute force
,
implementation
900
x9962
862F
Mahmoud and Ehab and the final stage
data structures
,
strings
2900
x197
862E
Mahmoud and Ehab and the function
binary search
,
data structures
,
sortings
2100
x1388
862D
Mahmoud and Ehab and the binary string
binary search
,
divide and conquer
,
interactive
2000
x1650
862C
Mahmoud and Ehab and the xor
constructive algorithms
1900
x3937
862B
Mahmoud and Ehab and the bipartiteness
dfs and similar
,
graphs
,
trees
1300
x15969
862A
Mahmoud and Ehab and the MEX
greedy
,
implementation
1000
x9351
860E
Arkady and a Nobody-men
data structures
,
dfs and similar
,
trees
2700
x421
859G
Circle of Numbers
math
3000
x145
859F
Ordering T-Shirts
greedy
2800
x160
859E
Desk Disorder
combinatorics
,
dfs and similar
,
dsu
,
graphs
,
trees
2100
x1643
859D
Third Month Insanity
dp
,
probabilities
,
trees
2100
x848
859C
Pie Rules
dp
,
games
1500
x5264
859B
Lazy Security Guard
brute force
,
geometry
,
math
1000
x6738
859A
Declined Finalists
greedy
,
implementation
800
x7614
858F
Wizard's Tour
constructive algorithms
,
dfs and similar
,
graphs
2300
x1474
858E
Tests Renumeration
greedy
,
implementation
2200
x497
858D
Polycarp's phone book
data structures
,
implementation
,
sortings
1600
x3712
858C
Did you mean...
dp
,
greedy
,
implementation
1500
x5443
858B
Which floor?
brute force
,
implementation
1500
x3687
858A
k-rounding
brute force
,
math
,
number theory
1100
x7846
856F
To Play or not to Play
greedy
3000
x101
856E
Satellites
3100
x65
856D
Masha and Cactus
dp
,
trees
2400
x369
856C
Eleventh Birthday
combinatorics
,
dp
,
math
2400
x523
856B
Similar Words
dp
,
hashing
,
strings
,
trees
2300
x476
856A
Set Theory
brute force
,
constructive algorithms
1600
x1358
855G
Harry Vs Voldemort
dfs and similar
,
dp
,
graphs
,
trees
3300
x199
855F
Nagini
binary search
,
data structures
3100
x417
855E
Salazar Slytherin's Locket
bitmasks
,
dp
2200
x1614
855D
Rowena Ravenclaw's Diadem
trees
2500
x474
855C
Helga Hufflepuff's Cup
dp
,
trees
2000
x1978
855B
Marvolo Gaunt's Ring
brute force
,
data structures
,
dp
1500
x8360
855A
Tom Riddle's Diary
brute force
,
implementation
,
strings
800
x20107
854B
Maxim Buys an Apartment
constructive algorithms
,
math
1200
x8120
854A
Fraction
brute force
,
constructive algorithms
,
math
800
x13394
853E
Lada Malina
data structures
,
geometry
3400
x64
853D
Michael and Charging Stations
binary search
,
dp
,
greedy
2400
x653
853C
Boredom
data structures
2100
x1387
853B
Jury Meeting
greedy
,
sortings
,
two pointers
1800
x2503
853A
Planning
greedy
1500
x5765
852I
Dating
brute force
,
dfs and similar
,
graphs
,
trees
2300
x554
852H
Bob and stages
dp
,
geometry
3000
x145
852G
Bathroom terminal
implementation
1700
x1263
852F
Product transformation
combinatorics
,
math
,
number theory
2200
x542
852E
Casinos and travel
dp
2100
x808
852D
Exploration plan
binary search
,
flows
,
graph matchings
,
shortest paths
2100
x949
852C
Property
greedy
,
sortings
2100
x375
852B
Neural Network country
dp
,
matrices
2000
x1373
852A
Digits
brute force
,
implementation
,
math
2500
x364
851B
Arpa and an exam about geometry
geometry
,
math
1400
x5431
851A
Arpa and a research in Mexican wave
implementation
,
math
800
x9497
850F
Rainbow Balls
math
2800
x595
850E
Random Elections
bitmasks
,
brute force
,
divide and conquer
,
fft
,
math
2800
x379
850D
Tournament Construction
constructive algorithms
,
dp
,
graphs
,
greedy
,
math
2800
x371
850C
Arpa and a game with Mojtaba
bitmasks
,
dp
,
games
2200
x1371
850B
Arpa and a list of numbers
implementation
,
number theory
2100
x1973
850A
Five Dimensional Points
brute force
,
geometry
,
math
1700
x2994
849B
Tell Your World
brute force
,
geometry
1600
x3495
849A
Odds and Ends
implementation
1000
x8909
848E
Days of Floral Colours
combinatorics
,
divide and conquer
,
dp
,
fft
,
math
3400
x200
848D
Shake It!
combinatorics
,
dp
,
flows
,
graphs
2900
x365
848C
Goodbye Souvenir
data structures
,
divide and conquer
2600
x1248
848B
Rooter's Song
constructive algorithms
,
data structures
,
geometry
,
implementation
,
sortings
,
two pointers
1900
x1814
848A
From Y to Y
constructive algorithms
1600
x5022
847M
Weather Tomorrow
implementation
,
math
1000
x6179
847L
Berland SU Computer Network
constructive algorithms
,
dfs and similar
,
graphs
,
hashing
,
trees
2400
x315
847K
Travel Cards
greedy
,
implementation
,
sortings
1800
x1482
847J
Students Initiation
binary search
,
flows
,
graphs
2400
x615
847I
Noise Level
dfs and similar
,
implementation
,
math
1900
x1502
847H
Load Testing
greedy
1600
x2370
847G
University Classes
implementation
900
x6515
847F
Berland Elections
greedy
,
sortings
2100
x848
847E
Packmen
binary search
,
dp
1800
x2729
847D
Dog Show
constructive algorithms
,
data structures
,
greedy
2200
x1013
847C
Sum of Nestings
constructive algorithms
1800
x2330
847B
Preparing for Merge Sort
binary search
,
data structures
1600
x4646
847A
Union of Doubly Linked Lists
implementation
1500
x3298
846F
Random Query
data structures
,
math
,
probabilities
,
two pointers
1800
x2203
846E
Chemistry in Berland
dfs and similar
,
greedy
,
trees
2300
x851
846D
Monitor
binary search
,
data structures
1900
x2350
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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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