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#
Name
723D
Lakes in Berland
dfs and similar
,
dsu
,
graphs
,
greedy
,
implementation
1600
x6838
723C
Polycarp at the Radio
greedy
1600
x4521
723B
Text Document Analysis
expression parsing
,
implementation
,
strings
1100
x10090
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x71896
722F
Cyclic Cipher
chinese remainder theorem
,
data structures
,
implementation
,
number theory
,
two pointers
2800
x473
722E
Research Rover
combinatorics
,
dp
2900
x802
722D
Generating Sets
binary search
,
data structures
,
dfs and similar
,
greedy
,
strings
,
trees
1900
x3098
722C
Destroying Array
data structures
,
dsu
1600
x8931
722B
Verse Pattern
implementation
,
strings
1200
x6361
722A
Broken Clock
brute force
,
implementation
1300
x6596
721E
Road to Home
binary search
,
dp
2700
x302
721D
Maxim and Array
constructive algorithms
,
data structures
,
greedy
,
math
2000
x2302
721C
Journey
dp
,
graphs
1800
x5700
721B
Passwords
implementation
,
math
,
sortings
,
strings
1100
x11994
721A
One-dimensional Japanese Crossword
implementation
800
x18108
720F
Array Covering
data structures
3100
x145
720E
Cipher
implementation
3100
x63
720D
Slalom
data structures
,
dp
,
sortings
3100
x225
720C
Homework
constructive algorithms
3100
x98
720B
Cactusophobia
dfs and similar
,
flows
2400
x396
720A
Closing ceremony
greedy
2000
x841
719B
Anatoly and Cockroaches
greedy
1400
x8351
719A
Vitya in the Countryside
implementation
1100
x15432
718E
Matvey's Birthday
bitmasks
,
graphs
3300
x346
718D
Andrew and Chemistry
dp
,
hashing
,
trees
2900
x386
718C
Sasha and Array
data structures
,
math
,
matrices
2300
x3400
718A
Efim and Strange Grade
dp
,
implementation
,
math
1700
x4326
717I
Cowboy Beblop at his computer
geometry
2800
x203
717H
Pokermon League challenge
math
,
probabilities
2400
x418
717G
Underfail
flows
2400
x625
717F
Heroes of Making Magic III
data structures
2600
x288
717E
Paint it really, really dark gray
dfs and similar
1900
x1430
717D
Dexterina’s Lab
games
,
matrices
,
probabilities
1900
x1380
717C
Potions Homework
implementation
,
sortings
1200
x3895
717B
R3D3’s Summer Adventure
dp
,
greedy
2700
x139
717A
Festival Organization
combinatorics
,
math
,
number theory
2900
x336
716B
Complete the Word
greedy
,
two pointers
1300
x11854
716A
Crazy Computer
implementation
800
x21836
715E
Complete the Permutations
combinatorics
,
fft
,
graphs
,
math
3400
x347
715D
Create a Maze
constructive algorithms
3100
x248
715C
Digit Tree
dfs and similar
,
divide and conquer
,
dsu
,
trees
2700
x1963
715B
Complete The Graph
binary search
,
constructive algorithms
,
graphs
,
shortest paths
2300
x2672
715A
Plus and Square Root
constructive algorithms
,
math
1600
x5552
714B
Filya and Homework
implementation
,
sortings
1200
x14066
714A
Meeting of Old Friends
implementation
,
math
1100
x10694
713E
Sonya Partymaker
binary search
,
dp
3300
x343
713D
Animals and Puzzle
binary search
,
data structures
2700
x1081
713C
Sonya and Problem Wihtout a Legend
dp
,
sortings
2300
x4830
713B
Searching Rectangles
binary search
,
constructive algorithms
,
interactive
2200
x1421
713A
Sonya and Queries
data structures
,
implementation
1400
x8344
712E
Memory and Casinos
data structures
,
math
,
probabilities
2500
x605
712D
Memory and Scores
combinatorics
,
dp
,
math
2200
x1662
712C
Memory and De-Evolution
greedy
,
math
1600
x5587
712B
Memory and Trident
implementation
,
strings
1100
x9650
712A
Memory and Crow
implementation
,
math
800
x11531
711E
ZS and The Birthday Paradox
math
,
number theory
,
probabilities
2300
x1246
711D
Directed Roads
combinatorics
,
dfs and similar
,
graphs
,
math
1900
x4370
711C
Coloring Trees
dp
1700
x7859
711B
Chris and Magic Square
constructive algorithms
,
implementation
1400
x8356
711A
Bus to Udayland
brute force
,
implementation
800
x28888
710F
String Set Queries
brute force
,
data structures
,
hashing
,
interactive
,
string suffix structures
,
strings
2400
x1699
710E
Generate a String
dfs and similar
,
dp
2000
x5006
710D
Two Arithmetic Progressions
math
,
number theory
2500
x1169
710C
Magic Odd Square
constructive algorithms
,
math
1500
x4998
710B
Optimal Point on a Line
brute force
,
sortings
1400
x8546
710A
King Moves
implementation
800
x13561
709B
Checkpoints
greedy
,
implementation
,
sortings
1500
x4709
709A
Juicer
implementation
900
x30302
708E
Student's Camp
dp
,
math
3100
x940
708D
Incorrect Flow
flows
2900
x704
708C
Centroids
data structures
,
dfs and similar
,
dp
,
graphs
,
greedy
,
trees
2300
x3041
708B
Recover the String
constructive algorithms
,
greedy
,
implementation
,
math
1900
x3208
708A
Letters Cyclic Shift
constructive algorithms
,
greedy
,
implementation
,
strings
1200
x8926
707E
Garlands
data structures
2400
x1008
707D
Persistent Bookcase
bitmasks
,
data structures
,
dfs and similar
,
implementation
2200
x2610
707C
Pythagorean Triples
math
,
number theory
1500
x12326
707B
Bakery
graphs
1300
x12779
707A
Brain's Photos
implementation
800
x46768
706E
Working routine
data structures
,
implementation
2500
x1119
706D
Vasiliy's Multiset
binary search
,
bitmasks
,
data structures
,
trees
1800
x9420
706C
Hard problem
dp
,
strings
1600
x15722
706B
Interesting drink
binary search
,
dp
,
implementation
1100
x59036
706A
Beru-taxi
brute force
,
geometry
,
implementation
900
x14300
705B
Spider Man
games
,
math
1100
x9056
705A
Hulk
implementation
800
x100385
704E
Iron Man
data structures
,
geometry
,
trees
3300
x273
704D
Captain America
flows
,
greedy
3100
x781
704C
Black Widow
dp
,
graphs
,
implementation
,
math
2900
x458
704B
Ant Man
dp
,
graphs
,
greedy
2500
x1569
704A
Thor
brute force
,
data structures
,
implementation
1600
x8982
703E
Mishka and Divisors
dp
,
number theory
2600
x588
703D
Mishka and Interesting sum
data structures
2100
x3419
703C
Chris and Road
geometry
,
implementation
2100
x1692
703B
Mishka and trip
implementation
,
math
1400
x5639
703A
Mishka and Game
implementation
800
x53995
702F
T-Shirts
data structures
2800
x1200
702E
Analysis of Pathes in Functional Graph
data structures
,
graphs
2100
x2326
702D
Road to Post Office
math
1900
x3253
702C
Cellular Network
binary search
,
implementation
,
two pointers
1500
x13323
702B
Powers of Two
brute force
,
data structures
,
implementation
,
math
1500
x11390
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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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