Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
Main
acmsguru
|
Problems
Submit
Status
Standings
Custom test
Problems
#
Name
2222D
Permutation Construction
constructive algorithms
,
data structures
,
sortings
x3115
2222B
Artistic Balance Tree
greedy
,
sortings
x7171
2220A
Blocked
greedy
,
sortings
x17963
2217E
Definitely Larger
binary search
,
constructive algorithms
,
data structures
,
graphs
,
greedy
,
sortings
2000
x2043
2215E
Star Map
constructive algorithms
,
data structures
,
geometry
,
greedy
,
sortings
2700
x157
2208D2
Tree Orientation (Hard Version)
dfs and similar
,
dsu
,
graphs
,
greedy
,
sortings
,
trees
2200
x1820
2208B
Cyclists
brute force
,
games
,
greedy
,
implementation
,
math
,
sortings
1100
x13604
2207B
One Night At Freddy's
games
,
greedy
,
sortings
1600
x5774
2205C
Simons and Posting Blogs
greedy
,
greedy
,
greedy
,
sortings
1500
x7687
2200F
Mooclear Reactor 2
brute force
,
data structures
,
greedy
,
implementation
,
sortings
1900
x2874
2200D
Portal
greedy
,
sortings
1300
x11743
2200B
Deletion Sort
bitmasks
,
brute force
,
greedy
,
sortings
800
x25390
2197B
Array and Permutation
implementation
,
schedules
,
sortings
,
two pointers
1100
x15853
2195F
Parabola Independence
dp
,
graphs
,
greedy
,
math
,
sortings
2000
x2692
2195B
Heapify 1
implementation
,
sortings
900
x24795
2193G
Paths in a Tree
dfs and similar
,
interactive
,
sortings
,
trees
2100
x2236
2193D
Monster Game
binary search
,
sortings
,
two pointers
1100
x21536
2191B
MEX Reordering
constructive algorithms
,
sortings
1000
x19877
2190C
Comparable Permutations
greedy
,
implementation
,
interactive
,
sortings
,
two pointers
2300
x1289
2189F
Zhora the Vacuum Cleaner
data structures
,
dfs and similar
,
dp
,
greedy
,
implementation
,
sortings
,
trees
2800
x227
2187G
Many Cartesian Trees
greedy
,
sortings
,
trees
3500
x98
2187A
Restricted Sorting
greedy
,
sortings
1300
x15848
2185C
Shifted MEX
implementation
,
sortings
900
x28941
2184E
Exquisite Array
combinatorics
,
data structures
,
dsu
,
sortings
1800
x5758
2183H
Minimise Cost
binary search
,
dp
,
greedy
,
sortings
3500
x159
2182E
New Year's Gifts
binary search
,
data structures
,
greedy
,
sortings
,
two pointers
1800
x5562
2181E
Elevator Against Humanity
brute force
,
constructive algorithms
,
greedy
,
sortings
2900
x143
2181D
Doorway
binary search
,
data structures
,
sortings
2000
x1354
2179C
Blackslex and Number Theory
implementation
,
math
,
number theory
,
sortings
1100
x22280
2176D
Fibonacci Paths
data structures
,
dp
,
graphs
,
sortings
1800
x5756
2176C
Odd Process
greedy
,
sortings
1300
x15703
2173E
Shiro's Mirror Duel
constructive algorithms
,
greedy
,
interactive
,
probabilities
,
sortings
2200
x1532
2172B
Buses
greedy
,
sortings
1800
x2128
2171H
Shiori Miyagi and Maximum Array Score
binary search
,
data structures
,
dp
,
sortings
2400
x1013
2167C
Isamatdin and His Magic Wand!
constructive algorithms
,
greedy
,
implementation
,
sortings
800
x36023
2167B
Your Name
sortings
,
strings
800
x51744
2167A
Square?
math
,
sortings
800
x58355
2165B
Marble Council
dp
,
math
,
sortings
1900
x4529
2164C
Dungeon
binary search
,
brute force
,
data structures
,
greedy
,
sortings
1400
x10682
2164A
Sequence Game
brute force
,
sortings
800
x20809
2163D2
Diadrash (Hard Version)
binary search
,
interactive
,
math
,
sortings
2500
x1495
2163A
Souvlaki VS. Kalamaki
brute force
,
greedy
,
math
,
sortings
800
x19578
2161C
Loyalty
constructive algorithms
,
greedy
,
sortings
,
two pointers
1200
x12529
2157E
Adjusting Drones
binary search
,
brute force
,
data structures
,
dp
,
dsu
,
greedy
,
implementation
,
sortings
1900
x3565
2157D
Billion Players Game
binary search
,
greedy
,
math
,
sortings
,
ternary search
,
two pointers
1600
x5994
2157A
Dungeon Equilibrium
greedy
,
implementation
,
sortings
800
x16481
2156F1
Strange Operation (Easy Version)
brute force
,
data structures
,
greedy
,
implementation
,
sortings
2200
x1616
2154E
No Mind To Think
binary search
,
divide and conquer
,
greedy
,
sortings
,
ternary search
,
two pointers
2500
x1202
2153C
Symmetrical Polygons
constructive algorithms
,
geometry
,
greedy
,
implementation
,
sortings
1500
x11761
2153A
Circle of Apple Trees
greedy
,
sortings
800
x26350
2150E1
Hidden Single (Version 1)
divide and conquer
,
interactive
,
math
,
probabilities
,
sortings
2600
x1025
2149B
Unconventional Pairs
greedy
,
sortings
800
x33014
2148F
Gravity Falls
greedy
,
implementation
,
sortings
1800
x6583
2148D
Destruction of the Dandelion Fields
constructive algorithms
,
greedy
,
sortings
1000
x26714
2145E
Predicting Popularity
binary search
,
data structures
,
greedy
,
sortings
2100
x3063
2143B
Discounts
greedy
,
sortings
,
two pointers
1000
x20900
2141G
Good Robot Paths
*special problem
,
data structures
,
geometry
,
sortings
2800
x62
2140D
A Cruel Segment's Thesis
data structures
,
greedy
,
sortings
2000
x4887
2140A
Shift Sort
greedy
,
sortings
800
x22249
2138D
Antiamuny and Slider Movement
brute force
,
combinatorics
,
implementation
,
math
,
sortings
2600
x640
2137F
Prefix Maximum Invariance
binary search
,
combinatorics
,
data structures
,
sortings
1900
x4052
2132E
Arithmetics Competition
binary search
,
data structures
,
greedy
,
sortings
,
ternary search
1700
x7583
2131F
Unjust Binary Life
binary search
,
data structures
,
greedy
,
greedy
,
math
,
sortings
,
two pointers
1900
x4715
2129E
Induced Subgraph Queries
data structures
,
graphs
,
sortings
3000
x475
2129B
Stay or Mirror
brute force
,
data structures
,
dp
,
greedy
,
sortings
1600
x13250
2129A
Double Perspective
constructive algorithms
,
dp
,
dsu
,
graphs
,
greedy
,
sortings
1300
x16631
2128B
Deque Process
constructive algorithms
,
greedy
,
sortings
,
two pointers
1100
x21406
2128A
Recycling Center
greedy
,
sortings
800
x28474
2127C
Trip Shopping
games
,
greedy
,
sortings
1400
x12371
2126D
This Is the Last Time
data structures
,
greedy
,
sortings
1200
x23980
2126C
I Will Definitely Make It
greedy
,
sortings
1100
x26258
2125A
Difficult Contest
constructive algorithms
,
implementation
,
sortings
,
strings
800
x27962
2124D
Make a Palindrome
greedy
,
sortings
,
two pointers
1700
x8086
2124A
Deranged Deletions
greedy
,
sortings
800
x19192
2123G
Modular Sorting
brute force
,
data structures
,
greedy
,
math
,
number theory
,
sortings
2100
x3247
2123E
MEX Count
binary search
,
data structures
,
greedy
,
sortings
,
two pointers
1400
x14892
2122C
Manhattan Pairs
constructive algorithms
,
geometry
,
greedy
,
math
,
sortings
1700
x8386
2121H
Ice Baby
binary search
,
brute force
,
data structures
,
dp
,
implementation
,
sortings
2300
x2238
2121G
Gangsta
data structures
,
divide and conquer
,
math
,
sortings
1900
x5359
2121D
1709
implementation
,
sortings
1300
x18196
2120C
Divine Tree
constructive algorithms
,
greedy
,
math
,
sortings
,
trees
1400
x12587
2117H
Incessant Rain
data structures
,
divide and conquer
,
sortings
2500
x982
2117G
Omg Graph
brute force
,
dsu
,
graphs
,
greedy
,
shortest paths
,
sortings
1900
x5140
2116B
Gellyfish and Baby's Breath
greedy
,
math
,
sortings
1300
x17545
2114F
Small Operations
binary search
,
brute force
,
dfs and similar
,
dp
,
math
,
number theory
,
sortings
2000
x5497
2111E
Changing the String
binary search
,
data structures
,
greedy
,
implementation
,
sortings
,
strings
1900
x5404
2111D
Creating a Schedule
constructive algorithms
,
data structures
,
greedy
,
implementation
,
sortings
1400
x11984
2110A
Fashionable Array
implementation
,
sortings
800
x29798
2106C
Cherry Bomb
greedy
,
math
,
sortings
1000
x25591
2103F
Maximize Nor
bitmasks
,
data structures
,
dp
,
implementation
,
sortings
2600
x618
2103C
Median Splits
binary search
,
greedy
,
implementation
,
sortings
1600
x10548
2102B
The Picky Cat
implementation
,
sortings
900
x19828
2101D
Mani and Segments
data structures
,
implementation
,
sortings
,
two pointers
2500
x1018
2101B
Quartet Swapping
brute force
,
data structures
,
divide and conquer
,
greedy
,
sortings
1800
x6821
2098B
Sasha and the Apartment Purchase
math
,
sortings
1400
x7875
2097A
Sports Betting
2-sat
,
brute force
,
math
,
sortings
1400
x8576
2096E
Wonderful Teddy Bears
greedy
,
implementation
,
sortings
2400
x2046
2096B
Wonderful Gloves
greedy
,
math
,
sortings
1100
x16563
2092A
Kamilka and the Sheep
greedy
,
math
,
number theory
,
sortings
800
x28310
2091B
Team Training
dp
,
greedy
,
sortings
800
x32693
←
1
2
3
...
12
13
→
→ Pay attention
Before contest
Codeforces Round 1097 (Div. 1, Based on Zhili Cup 2026)
3 days
Register now »
*has extra registration
Before contest
Codeforces Round 1097 (Div. 2, Based on Zhili Cup 2026)
3 days
Register now »
*has extra registration
→ Filter Problems
Difficulty:
—
sortings
combine-tags-by-or
*combine tags by OR
2-sat
binary search
bitmasks
brute force
chinese remainder theorem
combinatorics
communication
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
User lists
Name