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Before contest
Good Bye 2024: 2025 is NEAR
3 days
→ Filter Problems
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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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Problems
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Status
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Custom test
Problems
#
Name
510E
Fox And Dinner
flows
2300
x2240
510D
Fox And Jumping
bitmasks
,
brute force
,
dp
,
math
1900
x5717
510C
Fox And Names
dfs and similar
,
graphs
,
sortings
1600
x16725
510B
Fox And Two Dots
dfs and similar
1500
x14183
510A
Fox And Snake
implementation
800
x86360
509F
Progress Monitoring
dp
,
trees
2300
x1086
509E
Pretty Song
math
,
strings
2000
x1805
509D
Restoring Numbers
constructive algorithms
,
math
2200
x764
509C
Sums of Digits
dp
,
greedy
,
implementation
2000
x2107
509B
Painting Pebbles
constructive algorithms
,
greedy
,
implementation
1300
x9678
509A
Maximum in Table
brute force
,
implementation
800
x38873
508E
Arthur and Brackets
dp
,
greedy
2200
x1777
508D
Tanya and Password
dfs and similar
,
graphs
2500
x3498
508C
Anya and Ghosts
constructive algorithms
,
greedy
1600
x4482
508B
Anton and currency you all know
greedy
,
math
,
strings
1300
x22821
508A
Pasha and Pixels
brute force
1100
x7986
507E
Breaking Good
dfs and similar
,
dp
,
graphs
,
shortest paths
2100
x2962
507D
The Maths Lecture
dp
,
implementation
2200
x1864
507C
Guess Your Way Out!
implementation
,
math
,
trees
1700
x4390
507B
Amr and Pins
geometry
,
math
1400
x24951
507A
Amr and Music
greedy
,
implementation
,
sortings
1000
x18757
506E
Mr. Kitayuta's Gift
combinatorics
,
dp
,
matrices
,
strings
3000
x767
506D
Mr. Kitayuta's Colorful Graph
brute force
,
dfs and similar
,
dsu
,
graphs
2400
x2200
505E
Mr. Kitayuta vs. Bamboos
binary search
,
greedy
2900
x1416
505D
Mr. Kitayuta's Technology
dfs and similar
2200
x2584
505C
Mr. Kitayuta, the Treasure Hunter
dfs and similar
,
dp
,
two pointers
1900
x6481
505B
Mr. Kitayuta's Colorful Graph
dfs and similar
,
dp
,
dsu
,
graphs
1400
x13271
505A
Mr. Kitayuta's Gift
brute force
,
implementation
,
strings
1100
x6699
504E
Misha and LCP on Tree
binary search
,
dfs and similar
,
hashing
,
string suffix structures
,
trees
3000
x944
504D
Misha and XOR
bitmasks
2700
x309
501E
Misha and Palindrome Degree
binary search
,
combinatorics
,
implementation
2500
x924
501D
Misha and Permutations Summation
data structures
2000
x2446
501C
Misha and Forest
constructive algorithms
,
data structures
,
greedy
,
sortings
,
trees
1500
x5684
501B
Misha and Changing Handles
data structures
,
dsu
,
strings
1100
x16809
501A
Contest
implementation
900
x23002
500G
New Year Running
number theory
,
trees
3200
x157
500F
New Year Shopping
divide and conquer
,
dp
2700
x748
500E
New Year Domino
data structures
,
dp
,
dsu
2300
x1453
500D
New Year Santa Network
combinatorics
,
dfs and similar
,
graphs
,
trees
1900
x3136
500C
New Year Book Reading
constructive algorithms
,
greedy
,
implementation
,
math
1600
x5838
500B
New Year Permutation
dfs and similar
,
dsu
,
graphs
,
greedy
,
math
,
sortings
1600
x8939
500A
New Year Transportation
dfs and similar
,
graphs
,
implementation
1000
x54194
499B
Lecture
implementation
,
strings
1000
x39952
499A
Watching a movie
greedy
,
implementation
1000
x14018
498E
Stairs and Lines
dp
,
matrices
2700
x480
498D
Traffic Jams in the Land
data structures
,
dp
,
number theory
2400
x1136
498C
Array and Operations
flows
,
graph matchings
,
number theory
2100
x3551
498B
Name That Tune
dp
,
probabilities
,
two pointers
2400
x1195
498A
Crazy Town
geometry
1700
x6500
497E
Subsequences Return
dp
,
matrices
2900
x287
497D
Gears
brute force
,
geometry
,
math
2900
x231
496E
Distributing Parts
greedy
,
sortings
2100
x1675
496D
Tennis Game
binary search
1900
x3039
496C
Removing Columns
brute force
,
constructive algorithms
,
implementation
1500
x7780
496B
Secret Combination
brute force
,
constructive algorithms
,
implementation
1500
x5954
496A
Minimum Difficulty
brute force
,
implementation
,
math
900
x16552
495B
Modular Equations
math
,
number theory
1600
x7076
495A
Digital Counter
implementation
1100
x8547
494E
Sharti
data structures
,
games
3200
x321
494D
Birthday
data structures
,
dfs and similar
,
dp
,
trees
2700
x617
494C
Helping People
dp
,
probabilities
2600
x876
494B
Obsessive String
dp
,
strings
2000
x2758
494A
Treasure
greedy
1500
x6270
493E
Vasya and Polynomial
math
2800
x491
493D
Vasya and Chess
constructive algorithms
,
games
,
math
1700
x9745
493C
Vasya and Basketball
binary search
,
brute force
,
data structures
,
implementation
,
sortings
,
two pointers
1600
x6856
493B
Vasya and Wrestling
implementation
1400
x13418
493A
Vasya and Football
implementation
1300
x6136
492E
Vanya and Field
math
2000
x1636
492D
Vanya and Computer Game
binary search
,
implementation
,
math
,
sortings
1800
x3182
492C
Vanya and Exams
greedy
,
sortings
1400
x14241
492B
Vanya and Lanterns
binary search
,
implementation
,
math
,
sortings
1200
x77384
492A
Vanya and Cubes
implementation
800
x51912
491C
Deciphering
flows
,
graph matchings
2300
x419
491B
New York Hotel
greedy
,
math
2100
x571
491A
Up the hill
constructive algorithms
,
implementation
1000
x2969
490F
Treeland Tour
data structures
,
dfs and similar
,
dp
,
trees
2200
x1739
490E
Restoring Increasing Sequence
binary search
,
brute force
,
greedy
,
implementation
2000
x1608
490D
Chocolate
brute force
,
dfs and similar
,
math
,
meet-in-the-middle
,
number theory
1900
x2162
490C
Hacking Cypher
brute force
,
math
,
number theory
,
strings
1700
x9123
490B
Queue
dsu
,
implementation
1500
x6065
490A
Team Olympiad
greedy
,
implementation
,
sortings
800
x60571
489F
Special Matrices
combinatorics
,
dp
2100
x1678
489E
Hiking
binary search
,
dp
2300
x1040
489D
Unbearable Controversy of Being
brute force
,
combinatorics
,
dfs and similar
,
graphs
1700
x6722
489C
Given Length and Sum of Digits...
dp
,
greedy
,
implementation
1400
x46869
489B
BerSU Ball
dfs and similar
,
dp
,
graph matchings
,
greedy
,
sortings
,
two pointers
1200
x49915
489A
SwapSort
greedy
,
implementation
,
sortings
1200
x10138
488B
Candy Boxes
brute force
,
constructive algorithms
,
math
1900
x2127
488A
Giga Tower
brute force
1100
x14370
487E
Tourists
data structures
,
dfs and similar
,
graphs
,
trees
3200
x2391
487D
Conveyor Belts
data structures
2700
x909
487C
Prefix Product Sequence
constructive algorithms
,
math
,
number theory
2300
x2810
487B
Strip
binary search
,
data structures
,
dp
,
two pointers
2000
x3588
487A
Fight the Monster
binary search
,
brute force
,
implementation
1800
x3778
486E
LIS of Sequence
data structures
,
dp
,
greedy
,
hashing
,
math
2200
x2308
486D
Valid Sets
dfs and similar
,
dp
,
math
,
trees
2100
x4085
486C
Palindrome Transformation
brute force
,
greedy
,
implementation
1700
x11810
486B
OR in Matrix
greedy
,
hashing
,
implementation
1300
x17937
486A
Calculating Function
implementation
,
math
800
x123231
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