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Good Bye 2024: 2025 is NEAR
3 days
→ Filter Problems
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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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Custom test
Problems
#
Name
706D
Vasiliy's Multiset
binary search
,
bitmasks
,
data structures
,
trees
1800
x10312
706C
Hard problem
dp
,
strings
1600
x16615
706B
Interesting drink
binary search
,
dp
,
implementation
1100
x65571
706A
Beru-taxi
brute force
,
geometry
,
implementation
900
x14577
705B
Spider Man
games
,
math
1100
x9199
705A
Hulk
implementation
800
x110108
704E
Iron Man
data structures
,
geometry
,
trees
3300
x284
704D
Captain America
flows
,
greedy
3100
x805
704C
Black Widow
dp
,
graphs
,
implementation
,
math
2900
x467
704B
Ant Man
dp
,
graphs
,
greedy
2500
x1902
704A
Thor
brute force
,
data structures
,
implementation
1600
x9396
703E
Mishka and Divisors
dp
,
number theory
2600
x604
703D
Mishka and Interesting sum
data structures
2100
x3656
703C
Chris and Road
geometry
,
implementation
2100
x1863
703B
Mishka and trip
implementation
,
math
1400
x5706
703A
Mishka and Game
implementation
800
x57755
702F
T-Shirts
data structures
2800
x1509
702E
Analysis of Pathes in Functional Graph
data structures
,
graphs
2100
x2634
702D
Road to Post Office
math
1900
x3387
702C
Cellular Network
binary search
,
implementation
,
two pointers
1500
x16061
702B
Powers of Two
brute force
,
data structures
,
implementation
,
math
1500
x12139
702A
Maximum Increase
dp
,
greedy
,
implementation
800
x46100
701C
They Are Everywhere
binary search
,
strings
,
two pointers
1500
x15530
701B
Cells Not Under Attack
data structures
,
math
1200
x11821
701A
Cards
greedy
,
implementation
800
x19769
700E
Cool Slogans
string suffix structures
,
strings
3300
x1196
700D
Huffman Coding on Segment
data structures
,
greedy
3100
x464
700C
Break Up
dfs and similar
,
graphs
2600
x1317
700B
Connecting Universities
dfs and similar
,
dp
,
graphs
,
trees
1800
x4083
700A
As Fast As Possible
binary search
,
math
1900
x3201
699B
One Bomb
implementation
1400
x7622
699A
Launch of Collider
implementation
1000
x16141
698F
Coprime Permutation
combinatorics
,
number theory
3000
x438
698E
Cron
2800
x118
698D
Limak and Shooting Points
brute force
,
geometry
,
math
2600
x545
698C
LRU
bitmasks
,
dp
,
math
,
probabilities
2400
x1337
698B
Fix a Tree
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
trees
1700
x5798
698A
Vacations
dp
1400
x31057
697B
Barnicle
brute force
,
implementation
,
math
,
strings
1400
x5767
697A
Pineapple Incident
implementation
,
math
900
x12859
696F
...Dary!
binary search
,
geometry
,
two pointers
3300
x125
696E
...Wait for it...
data structures
,
dsu
,
trees
3000
x564
696D
Legen...
data structures
,
dp
,
matrices
,
strings
2500
x1332
696C
PLEASE
combinatorics
,
dp
,
implementation
,
math
,
matrices
2000
x2091
696B
Puzzles
dfs and similar
,
math
,
probabilities
,
trees
1700
x3529
696A
Lorenzo Von Matterhorn
brute force
,
data structures
,
implementation
,
trees
1500
x6135
691F
Couple Cover
brute force
,
dp
,
number theory
2200
x1316
691E
Xor-sequences
matrices
1900
x2587
691D
Swaps in Permutation
dfs and similar
,
dsu
,
math
1700
x5578
691C
Exponential notation
implementation
,
strings
1800
x2625
691B
s-palindrome
implementation
,
strings
1600
x7468
691A
Fashion in Berland
implementation
1000
x10274
690F3
Tree of Life (hard)
trees
3200
x54
690F2
Tree of Life (medium)
constructive algorithms
,
hashing
,
trees
2700
x85
690F1
Tree of Life (easy)
1300
x2177
690E2
Photographs (II)
2600
x143
690E1
Photographs (I)
1800
x680
690D3
The Wall (hard)
dp
2100
x525
690D2
The Wall (medium)
combinatorics
1800
x1251
690D1
The Wall (easy)
1200
x2635
690C3
Brain Network (hard)
trees
2200
x916
690C2
Brain Network (medium)
dfs and similar
,
graphs
,
trees
1500
x3853
690C1
Brain Network (easy)
1300
x2804
690B3
Recover Polygon (hard)
data structures
2600
x93
690B2
Recover Polygon (medium)
geometry
2600
x205
690B1
Recover Polygon (easy)
1700
x943
690A3
Collective Mindsets (hard)
2400
x553
690A2
Collective Mindsets (medium)
2300
x710
690A1
Collective Mindsets (easy)
1100
x2882
689E
Mike and Geometry Problem
combinatorics
,
data structures
,
dp
,
geometry
,
implementation
2000
x1957
689D
Friends and Subsequences
binary search
,
data structures
2100
x3512
689C
Mike and Chocolate Thieves
binary search
,
combinatorics
,
math
1700
x5442
689B
Mike and Shortcuts
dfs and similar
,
graphs
,
greedy
,
shortest paths
1600
x6069
689A
Mike and Cellphone
brute force
,
constructive algorithms
,
implementation
1400
x5279
688B
Lovely Palindromes
constructive algorithms
,
math
1000
x32678
688A
Opponents
implementation
800
x14051
687E
TOF
dfs and similar
,
graphs
2900
x323
687D
Dividing Kingdom II
brute force
,
data structures
,
dsu
,
graphs
,
sortings
2500
x964
687C
The Values You Can Make
dp
1900
x5761
687B
Remainders Game
chinese remainder theorem
,
math
,
number theory
1800
x5972
687A
NP-Hard Problem
dfs and similar
,
graphs
1500
x14568
686B
Little Robber Girl's Zoo
constructive algorithms
,
implementation
,
sortings
1100
x7818
686A
Free Ice Cream
constructive algorithms
,
implementation
800
x38268
685E
Travelling Through the Snow Queen's Kingdom
bitmasks
,
brute force
,
divide and conquer
,
graphs
2800
x560
685D
Kay and Eternity
brute force
,
implementation
,
sortings
2600
x487
685C
Optimal Point
binary search
,
math
2900
x588
685B
Kay and Snowflake
data structures
,
dfs and similar
,
dp
,
trees
1900
x4261
685A
Robbers' watch
brute force
,
combinatorics
,
dp
,
math
1700
x4289
683J
The Hero with Bombs
*special problem
3000
x41
683I
Loader
*special problem
,
graphs
2500
x41
683H
Exchange of Books
*special problem
1900
x100
683G
The Fraction
*special problem
1900
x134
683F
Reformat the String
*special problem
1800
x151
683E
Hammer throwing
*special problem
1800
x193
683D
Chocolate Bar
*special problem
,
math
1400
x329
683C
Symmetric Difference
*special problem
1600
x326
683B
The Teacher of Physical Education
*special problem
1600
x321
683A
The Check of the Point
*special problem
,
geometry
1200
x808
682E
Alyona and Triangles
geometry
,
two pointers
2600
x669
682D
Alyona and Strings
dp
,
strings
1900
x3338
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