Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
Please read
the new rule regarding the restriction on the use of AI tools
.
×
→ Pay attention
Before contest
Kotlin Heroes: Episode 11
9 days
Register now »
→ Filter Problems
Difficulty:
—
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
Add tag
Main
acmsguru
|
Problems
Submit
Status
Standings
Custom test
Problems
#
Name
1701D
Permutation Restoration
binary search
,
data structures
,
greedy
,
math
,
sortings
,
two pointers
1900
x5663
1701C
Schedule Management
binary search
,
greedy
,
implementation
,
two pointers
1400
x16889
1701B
Permutation
greedy
800
x20171
1701A
Grass Field
implementation
800
x26226
1700F
Puzzle
constructive algorithms
,
dp
,
greedy
2600
x927
1700E
Serega the Pirate
brute force
,
constructive algorithms
2600
x851
1700D
River Locks
binary search
,
dp
,
greedy
,
math
1900
x6075
1700C
Helping the Nature
constructive algorithms
,
data structures
,
greedy
1700
x10884
1700B
Palindromic Numbers
constructive algorithms
,
implementation
,
math
1100
x18679
1700A
Optimal Path
constructive algorithms
,
greedy
,
math
800
x22838
1699E
Three Days Grace
data structures
,
dp
,
greedy
,
math
,
number theory
,
two pointers
2600
x1139
1699D
Almost Triple Deletions
data structures
,
dp
,
greedy
2300
x3139
1699C
The Third Problem
combinatorics
,
constructive algorithms
,
math
1700
x9740
1699B
Almost Ternary Matrix
bitmasks
,
constructive algorithms
,
matrices
900
x19668
1699A
The Third Three Number Problem
constructive algorithms
,
math
800
x23962
1698G
Long Binary String
bitmasks
,
math
,
matrices
,
meet-in-the-middle
,
number theory
2900
x315
1698F
Equal Reversal
constructive algorithms
,
graphs
,
implementation
,
math
2800
x623
1698E
PermutationForces II
brute force
,
combinatorics
,
greedy
,
sortings
,
trees
,
two pointers
2300
x1634
1698D
Fixed Point Guessing
binary search
,
constructive algorithms
,
interactive
1600
x9246
1698C
3SUM Closure
brute force
,
data structures
1300
x18458
1698B
Rising Sand
constructive algorithms
,
greedy
,
implementation
800
x20889
1698A
XOR Mixup
bitmasks
,
brute force
800
x28916
1697F
Too Many Constraints
2-sat
,
constructive algorithms
,
graphs
,
implementation
2800
x559
1697E
Coloring
brute force
,
combinatorics
,
constructive algorithms
,
dp
,
geometry
,
graphs
,
greedy
,
implementation
,
math
2400
x1185
1697D
Guess The String
binary search
,
constructive algorithms
,
interactive
1900
x4419
1697C
awoo's Favorite Problem
binary search
,
constructive algorithms
,
data structures
,
greedy
,
implementation
,
strings
,
two pointers
1400
x14317
1697B
Promo
greedy
,
sortings
900
x26458
1697A
Parkway Walk
greedy
,
implementation
800
x25705
1696H
Maximum Product?
brute force
,
combinatorics
,
dp
,
greedy
,
implementation
,
math
,
two pointers
3500
x161
1696G
Fishingprince Plays With Array Again
brute force
,
data structures
,
geometry
,
math
3300
x272
1696F
Tree Recovery
brute force
,
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
trees
2600
x869
1696E
Placing Jinas
combinatorics
,
math
2000
x4022
1696D
Permutation Graph
binary search
,
constructive algorithms
,
data structures
,
divide and conquer
,
greedy
,
shortest paths
1900
x5434
1696C
Fishingprince Plays With Array
constructive algorithms
,
greedy
,
implementation
,
math
1400
x11581
1696B
NIT Destroys the Universe
greedy
900
x21134
1696A
NIT orz!
bitmasks
,
greedy
800
x18724
1695E
Ambiguous Dominoes
constructive algorithms
,
dfs and similar
,
graphs
2700
x448
1695D2
Tree Queries (Hard Version)
constructive algorithms
,
dfs and similar
,
dp
,
greedy
,
trees
2300
x1989
1695D1
Tree Queries (Easy Version)
brute force
,
constructive algorithms
,
dfs and similar
,
dp
,
greedy
,
trees
2200
x2165
1695C
Zero Path
brute force
,
data structures
,
dp
,
graphs
,
greedy
,
shortest paths
1700
x10886
1695B
Circle Game
games
,
greedy
1000
x18402
1695A
Subrectangle Guess
games
800
x16320
1694B
Paranoid String
constructive algorithms
,
greedy
1200
x19075
1694A
Creep
greedy
,
implementation
800
x22619
1693F
I Might Be Wrong
binary search
,
greedy
,
two pointers
3400
x401
1693E
Outermost Maximums
data structures
,
greedy
3400
x422
1693D
Decinc Dividing
brute force
,
data structures
,
divide and conquer
,
dp
,
greedy
2800
x828
1693C
Keshi in Search of AmShZ
graphs
,
greedy
,
shortest paths
2300
x2567
1693B
Fake Plastic Trees
dfs and similar
,
dp
,
greedy
,
trees
1700
x8422
1693A
Directional Increase
greedy
1300
x16088
1692H
Gambling
data structures
,
dp
,
greedy
,
math
1700
x7427
1692G
2^Sort
data structures
,
dp
,
sortings
,
two pointers
1400
x17561
1692F
3SUM
brute force
,
math
1300
x22617
1692E
Binary Deque
binary search
,
implementation
,
two pointers
1200
x21758
1692D
The Clock
brute force
,
implementation
1100
x19343
1692C
Where's the Bishop?
implementation
800
x33964
1692B
All Distinct
greedy
,
sortings
800
x34017
1692A
Marathon
implementation
800
x64491
1691F
K-Set Tree
combinatorics
,
dfs and similar
,
dp
,
math
,
trees
2500
x964
1691E
Number of Groups
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
sortings
2300
x1825
1691D
Max GEQ Sum
binary search
,
constructive algorithms
,
data structures
,
divide and conquer
,
implementation
,
two pointers
1800
x5768
1691C
Sum of Substrings
brute force
,
constructive algorithms
,
greedy
,
math
,
strings
1400
x15604
1691B
Shoe Shuffling
constructive algorithms
,
greedy
,
implementation
,
two pointers
1000
x22923
1691A
Beat The Odds
brute force
,
greedy
,
math
800
x30466
1690G
Count the Trains
binary search
,
data structures
,
greedy
,
sortings
2000
x3381
1690F
Shifting String
graphs
,
math
,
number theory
,
strings
1700
x7133
1690E
Price Maximization
binary search
,
greedy
,
math
,
two pointers
1500
x15138
1690D
Black and White Stripe
implementation
,
two pointers
1000
x29330
1690C
Restoring the Duration of Tasks
data structures
,
greedy
,
implementation
800
x26075
1690B
Array Decrements
greedy
,
implementation
800
x25278
1690A
Print a Pedestal (Codeforces logo?)
constructive algorithms
,
greedy
800
x33401
1689E
ANDfinity
bitmasks
,
brute force
,
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
2500
x1203
1689D
Lena and Matrix
data structures
,
dp
,
geometry
,
shortest paths
1900
x4194
1689C
Infected Tree
dfs and similar
,
dp
,
trees
1600
x11162
1689B
Mystic Permutation
data structures
,
greedy
900
x17506
1689A
Lex String
brute force
,
greedy
,
implementation
,
sortings
,
two pointers
800
x16758
1688C
Manipulating History
constructive algorithms
,
greedy
,
strings
1700
x8125
1688B
Patchouli's Magical Talisman
bitmasks
,
constructive algorithms
,
greedy
,
sortings
800
x18241
1688A
Cirno's Perfect Bitmasks Classroom
bitmasks
,
brute force
800
x21576
1687F
Koishi's Unconscious Permutation
fft
,
math
3500
x84
1687E
Become Big For Me
combinatorics
,
constructive algorithms
,
greedy
,
math
,
number theory
3500
x224
1687D
Cute number
binary search
,
brute force
,
data structures
,
dsu
,
implementation
,
math
2900
x584
1687C
Sanae and Giant Robot
binary search
,
brute force
,
data structures
,
dsu
,
greedy
,
sortings
2500
x1402
1687B
Railway System
constructive algorithms
,
graphs
,
greedy
,
interactive
,
sortings
1700
x3617
1687A
The Enchanted Forest
brute force
,
greedy
1600
x10342
1686B
Odd Subarrays
dp
,
greedy
800
x18238
1686A
Everything Everywhere All But One
greedy
800
x20470
1685E
The Ultimate LIS Problem
data structures
,
greedy
3500
x150
1685D2
Permutation Weight (Hard Version)
constructive algorithms
,
greedy
3500
x107
1685D1
Permutation Weight (Easy Version)
constructive algorithms
,
dfs and similar
,
dsu
2800
x444
1685C
Bring Balance
brute force
,
constructive algorithms
,
greedy
2600
x1003
1685B
Linguistics
greedy
,
implementation
,
sortings
,
strings
2000
x3260
1685A
Circular Local MiniMax
constructive algorithms
,
greedy
,
sortings
1100
x17054
1684H
Hard Cut
constructive algorithms
,
dfs and similar
,
divide and conquer
,
math
3400
x239
1684G
Euclid Guess
constructive algorithms
,
flows
,
graph matchings
,
math
,
number theory
2800
x610
1684F
Diverse Segments
data structures
,
two pointers
2600
x896
1684E
MEX vs DIFF
binary search
,
brute force
,
constructive algorithms
,
data structures
,
greedy
,
two pointers
2100
x3149
1684D
Traps
constructive algorithms
,
greedy
,
sortings
1700
x9636
1684C
Column Swapping
brute force
,
constructive algorithms
,
greedy
,
implementation
,
sortings
1400
x12289
1684B
Z mod X = C
constructive algorithms
,
math
800
x20931
←
1
2
...
18
19
20
21
22
...
98
99
→
User lists
Name