Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
→ Pay attention
Before contest
Codeforces Round 1097 (Div. 1, Based on Zhili Cup 2026)
47:04:20
Register now »
*has extra registration
Before contest
Codeforces Round 1097 (Div. 2, Based on Zhili Cup 2026)
47:04:20
Register now »
*has extra registration
→ Filter Problems
Difficulty:
—
dp
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
Main
acmsguru
|
Problems
Submit
Status
Standings
Custom test
Problems
#
Name
706B
Interesting drink
binary search
,
dp
,
implementation
1100
x84332
704C
Black Widow
dp
,
graphs
,
implementation
,
math
2900
x525
704B
Ant Man
dp
,
graphs
,
greedy
2500
x2168
703E
Mishka and Divisors
dp
,
number theory
2600
x670
702A
Maximum Increase
dp
,
greedy
,
implementation
800
x54987
700B
Connecting Universities
dfs and similar
,
dp
,
graphs
,
trees
1800
x4641
698C
LRU
bitmasks
,
dp
,
math
,
probabilities
2400
x1443
698A
Vacations
dp
1400
x37927
696D
Legen...
data structures
,
dp
,
matrices
,
strings
2500
x1614
696C
PLEASE
combinatorics
,
dp
,
implementation
,
math
,
matrices
2000
x2217
691F
Couple Cover
brute force
,
dp
,
number theory
2200
x1437
690D3
The Wall (hard)
dp
2100
x630
689E
Mike and Geometry Problem
combinatorics
,
data structures
,
dp
,
geometry
,
implementation
2000
x2130
687C
The Values You Can Make
dp
1900
x8334
685B
Kay and Snowflake
data structures
,
dfs and similar
,
dp
,
trees
1900
x5355
685A
Robbers' watch
brute force
,
combinatorics
,
dp
,
math
1700
x4501
682D
Alyona and Strings
dp
,
strings
1900
x3514
682C
Alyona and the Tree
dfs and similar
,
dp
,
graphs
,
trees
1600
x8080
679B
Bear and Tower of Cubes
binary search
,
dp
,
greedy
2200
x2231
678E
Another Sith Tournament
bitmasks
,
dp
,
math
,
probabilities
2200
x2726
677E
Vanya and Balloons
binary search
,
brute force
,
dp
,
implementation
2300
x755
677D
Vanya and Treasure
data structures
,
dp
,
graphs
,
shortest paths
2300
x1958
676C
Vasya and String
binary search
,
dp
,
strings
,
two pointers
1500
x22428
675E
Trains and Statistic
data structures
,
dp
,
greedy
2300
x3331
671D
Roads in Yusland
data structures
,
dp
,
greedy
2900
x1313
671A
Recycling Bottles
dp
,
geometry
,
greedy
,
implementation
1800
x4376
666A
Reberland Linguistics
dp
,
implementation
,
strings
1800
x3808
665F
Four Divisors
data structures
,
dp
,
math
,
number theory
,
sortings
,
two pointers
2400
x749
665C
Simple Strings
dp
,
greedy
,
strings
1300
x17226
662E
To Hack or not to Hack
brute force
,
dp
,
greedy
3100
x164
662C
Binary Table
bitmasks
,
brute force
,
divide and conquer
,
dp
,
fft
,
math
2600
x2425
660C
Hard Process
binary search
,
dp
,
two pointers
1600
x10750
659G
Fence Divercity
combinatorics
,
dp
,
number theory
2300
x1317
653B
Bear and Compressing
brute force
,
dfs and similar
,
dp
,
strings
1300
x5333
651A
Joysticks
dp
,
greedy
,
implementation
,
math
1100
x24136
650D
Zip-line
binary search
,
data structures
,
dp
,
hashing
2600
x1595
650C
Table Compression
dfs and similar
,
dp
,
dsu
,
graphs
,
greedy
2200
x2180
650B
Image Preview
binary search
,
brute force
,
dp
,
two pointers
1900
x3490
645E
Intellectual Inquiry
dp
,
greedy
,
strings
2200
x1407
645D
Robot Rapping Results Report
binary search
,
dp
,
graphs
1800
x3337
643F
Bears and Juice
dp
,
math
,
meet-in-the-middle
2900
x819
643E
Bear and Destroying Subtrees
dp
,
math
,
probabilities
,
trees
2700
x700
643C
Levels and Regions
dp
2400
x1727
641D
Little Artem and Random Variable
dp
,
implementation
,
math
,
probabilities
2400
x1575
637D
Running with Obstacles
*special problem
,
data structures
,
dp
,
greedy
1600
x2125
633F
The Chocolate Spree
dfs and similar
,
dp
,
graphs
,
trees
2600
x1378
633D
Fibonacci-ish
brute force
,
dp
,
hashing
,
implementation
,
math
2000
x3051
633C
Spy Syndrome 2
data structures
,
dp
,
hashing
,
implementation
,
sortings
,
string suffix structures
,
strings
1900
x3373
632E
Thief in a Shop
divide and conquer
,
dp
,
fft
,
math
2400
x3548
631E
Product Sum
data structures
,
dp
,
geometry
2600
x3200
629E
Famil Door and Roads
combinatorics
,
data structures
,
dfs and similar
,
dp
,
probabilities
,
trees
2300
x1150
629D
Babaei and Birthday Cake
data structures
,
dp
2000
x4496
629C
Famil Door and Brackets
dp
,
strings
2000
x3022
628D
Magic Numbers
dp
2200
x8271
628B
New Skateboard
dp
1300
x12059
627D
Preorder Test
binary search
,
dfs and similar
,
dp
,
graphs
,
greedy
,
trees
2600
x999
627A
XOR Equation
dp
,
math
1700
x4798
626G
Raffles
data structures
,
dp
,
greedy
,
math
3100
x607
626F
Group Projects
dp
2400
x3591
626D
Jerry's Protest
brute force
,
combinatorics
,
dp
,
probabilities
1800
x3159
626B
Cards
constructive algorithms
,
dp
,
math
1300
x6920
623E
Transforming Sequence
combinatorics
,
dp
,
fft
,
math
3300
x614
623C
Electric Charges
binary search
,
dp
2900
x526
623B
Array GCD
dp
,
greedy
,
number theory
2300
x2370
621E
Wet Shark and Blocks
dp
,
matrices
2000
x3243
618G
Combining Slimes
dp
,
math
,
matrices
,
probabilities
3300
x271
618D
Hamiltonian Spanning Tree
dfs and similar
,
dp
,
graph matchings
,
greedy
,
trees
2200
x1895
615C
Running Track
dp
,
greedy
,
strings
,
trees
2000
x2464
615B
Longtail Hedgehog
dp
,
graphs
1600
x5740
613E
Puzzle Lover
dp
,
hashing
,
strings
3200
x526
613D
Kingdom and its Cities
dfs and similar
,
divide and conquer
,
dp
,
graphs
,
sortings
,
trees
2800
x4031
613B
Skills
binary search
,
brute force
,
dp
,
greedy
,
sortings
,
two pointers
1900
x2476
612F
Simba on the Circle
dp
2600
x466
611D
New Year and Ancient Prophecy
dp
,
hashing
,
strings
2000
x2744
611C
New Year and Domino
dp
,
implementation
1500
x9006
607B
Zuma
dp
1900
x16292
607A
Chain Reaction
binary search
,
dp
1600
x10811
603A
Alternative Thinking
dp
,
greedy
,
math
1600
x8251
602B
Approximating a Constant Range
dp
,
implementation
,
two pointers
1400
x12069
601E
A Museum Robbery
data structures
,
dp
2800
x1141
601C
Kleofáš and the n-thlon
dp
,
math
,
probabilities
2300
x1413
599E
Sandy and Nuts
bitmasks
,
dp
,
trees
2600
x761
598E
Chocolate Bar
brute force
,
dp
2000
x6083
597C
Subsequences
data structures
,
dp
1900
x6602
597B
Restaurant
dp
,
greedy
,
sortings
1600
x5665
596E
Wilbur and Strings
dfs and similar
,
dp
,
graphs
,
strings
2500
x425
596D
Wilbur and Trees
dp
,
math
,
probabilities
,
sortings
2300
x729
593E
Strange Calculation and Cats
dp
,
matrices
2400
x700
592D
Super M
dfs and similar
,
dp
,
graphs
,
trees
2200
x2966
590D
Top Secret Task
dp
2300
x1333
587B
Duff in Beach
dp
2100
x1496
585F
Digits of Number Pi
dp
,
implementation
,
strings
3200
x797
582E
Boolean Function
bitmasks
,
dp
,
expression parsing
3000
x547
582D
Number of Binominal Coefficients
dp
,
math
,
number theory
3300
x739
582B
Once Again...
constructive algorithms
,
dp
,
matrices
1900
x3643
581F
Zublicanes and Mumocrates
dp
,
trees
,
two pointers
2400
x1034
581E
Kojiro and Furrari
dp
,
greedy
2800
x220
580D
Kefa and Dishes
bitmasks
,
dp
1800
x11866
580A
Kefa and First Steps
brute force
,
dp
,
implementation
900
x104649
578D
LCS Again
dp
,
greedy
2700
x961
←
1
2
...
18
19
20
21
22
...
24
25
→
User lists
Name