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Problems
#
Name
100J
Interval Coloring
*special problem
,
greedy
,
math
2400
x60
661H
Rotate Matrix
*special problem
2400
x64
1910H
Sum of Digits of Sums
*special problem
,
binary search
,
data structures
2400
x80
64I
Sort the Table
*special problem
,
sortings
2400
x84
1958G
Observation Towers
*special problem
2400
x86
119E
Alternative Reality
geometry
2400
x93
409I
Feed the Golorp
*special problem
2400
x116
39G
Inverse Function
implementation
2400
x123
929D
Пограничные врата
2400
x149
177G1
Fibonacci Strings
strings
2400
x164
1970G3
Min-Fund Prison (Hard)
bitmasks
,
dfs and similar
,
dp
,
graphs
,
trees
2400
x182
331D1
Escaping on Beaveractor
dfs and similar
,
implementation
2400
x199
1575M
Managing Telephone Poles
data structures
,
geometry
2400
x239
97A
Domino
brute force
,
implementation
2400
x250
350D
Looking for Owls
binary search
,
data structures
,
geometry
,
hashing
,
sortings
2400
x256
38H
The Great Marathon
dp
2400
x264
75E
Ship's Shortest Path
geometry
,
shortest paths
2400
x270
802L
Send the Fool Further! (hard)
dfs and similar
,
dp
,
math
,
trees
2400
x283
1403A
The Potion of Great Power
*special problem
,
2-sat
,
binary search
,
data structures
,
graphs
,
interactive
,
sortings
,
two pointers
2400
x286
175D
Plane of Tanks: Duel
brute force
,
dp
,
math
,
probabilities
2400
x289
332E
Binary Key
dp
,
greedy
,
implementation
2400
x294
97C
Winning Strategy
binary search
,
graphs
,
math
,
shortest paths
2400
x297
335D
Rectangles and Square
brute force
,
dp
2400
x304
1218D
Xor Spanning Tree
divide and conquer
,
fft
,
graphs
2400
x313
847L
Berland SU Computer Network
constructive algorithms
,
dfs and similar
,
graphs
,
hashing
,
trees
2400
x315
32E
Hide-and-Seek
geometry
,
implementation
2400
x321
73E
Morrowindows
math
,
number theory
2400
x322
1970A3
Balanced Unshuffle (Hard)
constructive algorithms
,
trees
2400
x326
1970A2
Balanced Unshuffle (Medium)
brute force
,
constructive algorithms
,
trees
2400
x333
200E
Tractor College
implementation
,
math
,
number theory
,
ternary search
2400
x333
534E
Berland Local Positioning System
constructive algorithms
,
greedy
,
hashing
,
implementation
2400
x341
58E
Expression
dp
2400
x348
74D
Hanger
data structures
2400
x359
107C
Arrangement
bitmasks
,
dp
2400
x362
26E
Multithreading
constructive algorithms
2400
x362
331C2
The Great Julya Calendar
dp
2400
x364
1045H
Self-exploration
math
2400
x365
51E
Pentagon
combinatorics
,
graphs
,
matrices
2400
x367
952F
2 + 2 != 4
2400
x369
856D
Masha and Cactus
dp
,
trees
2400
x369
198C
Delivering Carcinogen
binary search
,
geometry
2400
x369
1912H
Hypercatapult Commute
graphs
2400
x374
332D
Theft of Blueprints
graphs
,
math
2400
x381
273D
Dima and Figure
dp
2400
x385
720B
Cactusophobia
dfs and similar
,
flows
2400
x392
204D
Little Elephant and Retro Strings
dp
2400
x396
593E
Strange Calculation and Cats
dp
,
matrices
2400
x399
107D
Crime Management
dp
,
graphs
,
matrices
2400
x400
83C
Track
graphs
,
greedy
,
shortest paths
2400
x401
198E
Gripping Story
binary search
,
data structures
,
sortings
2400
x403
717H
Pokermon League challenge
math
,
probabilities
2400
x417
154D
Flatland Fencing
games
,
math
2400
x418
1912G
Great City Saint Petersburg
data structures
2400
x420
513D1
Constrained Tree
dfs and similar
2400
x425
662A
Gambling Nim
bitmasks
,
math
,
matrices
,
probabilities
2400
x429
534F
Simplified Nonogram
bitmasks
,
dp
,
hashing
,
meet-in-the-middle
2400
x443
277C
Game
games
,
implementation
2400
x447
354B
Game with Strings
bitmasks
,
dp
,
games
2400
x448
359E
Neatness
constructive algorithms
,
dfs and similar
2400
x460
1710E
Two Arrays
binary search
,
games
,
graph matchings
2400
x466
1070B
Berkomnadzor
data structures
,
greedy
2400
x469
887D
Ratings and Reality Shows
data structures
,
two pointers
2400
x471
1090C
New Year Presents
constructive algorithms
,
data structures
2400
x479
1054E
Chips Puzzle
constructive algorithms
,
implementation
,
math
2400
x479
316G3
Good Substrings
string suffix structures
2400
x488
1184E3
Daleks' Invasion (hard)
data structures
,
dsu
,
graphs
,
trees
2400
x493
1045B
Space Isaac
hashing
,
number theory
2400
x493
193C
Hamming Distance
constructive algorithms
,
greedy
,
math
,
matrices
2400
x496
690A3
Collective Mindsets (hard)
2400
x517
542A
Place Your Ad Here
data structures
,
sortings
2400
x521
283D
Cows and Cool Sequences
dp
,
math
,
number theory
2400
x523
856C
Eleventh Birthday
combinatorics
,
dp
,
math
2400
x526
946F
Fibonacci String Subsequences
combinatorics
,
dp
,
matrices
2400
x529
380B
Sereja and Tree
graphs
,
implementation
2400
x530
1070I
Privatization of Roads in Berland
flows
,
graph matchings
,
graphs
2400
x532
316D3
PE Lesson
dp
,
math
2400
x535
1938K
Tree Quiz
2400
x537
293C
Cube Problem
brute force
,
math
,
number theory
2400
x554
883J
Renovation
constructive algorithms
,
greedy
,
sortings
2400
x556
1765L
Project Manager
brute force
,
data structures
,
implementation
2400
x563
567F
Mausoleum
dp
2400
x567
633E
Startup Funding
binary search
,
constructive algorithms
,
data structures
,
probabilities
,
two pointers
2400
x568
323C
Two permutations
data structures
2400
x570
665F
Four Divisors
data structures
,
dp
,
math
,
number theory
,
sortings
,
two pointers
2400
x576
160E
Buses and People
binary search
,
data structures
,
sortings
2400
x576
845E
Fire in the City
binary search
,
data structures
2400
x579
1089M
Minegraphed
constructive algorithms
,
graphs
2400
x585
28D
Don't fear, DravDe is kind
binary search
,
data structures
,
dp
,
hashing
2400
x587
979E
Kuro and Topological Parity
dp
2400
x590
847J
Students Initiation
binary search
,
flows
,
graphs
2400
x615
1055D
Refactoring
greedy
,
implementation
,
strings
2400
x616
922F
Divisibility
constructive algorithms
,
dp
,
greedy
,
number theory
2400
x617
367D
Sereja and Sets
bitmasks
,
dfs and similar
2400
x617
758F
Geometrical Progression
brute force
,
math
,
number theory
2400
x620
717G
Underfail
flows
2400
x623
625D
Finals in arithmetic
constructive algorithms
,
implementation
,
math
2400
x623
796E
Exam Cheating
binary search
,
dp
2400
x627
513G2
Inversions problem
dp
,
probabilities
2400
x628
295D
Greg and Caves
combinatorics
,
dp
2400
x636
161C
Abracadabra
divide and conquer
2400
x638
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data structures
dfs and similar
divide and conquer
dp
dsu
expression parsing
fft
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games
geometry
graph matchings
graphs
greedy
hashing
implementation
interactive
math
matrices
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number theory
probabilities
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shortest paths
sortings
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strings
ternary search
trees
two pointers
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