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
Codeforces Round 976 (Div. 2)
3 days
Register now »
*has extra registration
→ 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
1225E
Rock Is Push
binary search
,
dp
2200
x1889
1225D
Power Products
hashing
,
math
,
number theory
1800
x7989
1225C
p-binary
bitmasks
,
brute force
,
math
1600
x8957
1225B2
TV Subscriptions (Hard Version)
implementation
,
two pointers
1300
x10600
1225B1
TV Subscriptions (Easy Version)
implementation
1000
x11898
1225A
Forgetting Things
math
900
x15809
1223G
Wooden Raft
binary search
,
math
,
number theory
3200
x250
1223F
Stack Exterminable Arrays
data structures
,
divide and conquer
,
dp
,
hashing
2600
x2051
1223E
Paint the Tree
dp
,
sortings
,
trees
2100
x2609
1223D
Sequence Sorting
dp
,
greedy
,
two pointers
2000
x4040
1223C
Save the Nature
binary search
,
greedy
1600
x8322
1223B
Strings Equalization
strings
1000
x14867
1223A
CME
math
800
x21602
1221G
Graph And Numbers
bitmasks
,
brute force
,
combinatorics
,
dp
,
meet-in-the-middle
2900
x680
1221F
Choose a Square
binary search
,
data structures
,
sortings
2400
x1050
1221E
Game With String
games
2500
x1087
1221D
Make The Fence Great Again
dp
1800
x9093
1221C
Perfect Team
binary search
,
math
1200
x21046
1221B
Knights
constructive algorithms
,
greedy
1100
x11956
1221A
2048 Game
brute force
,
greedy
,
math
1000
x16838
1220G
Geolocation
geometry
3400
x54
1220F
Gardener Alex
binary search
,
data structures
2700
x695
1220E
Tourism
dfs and similar
,
dp
,
dsu
,
graphs
,
greedy
,
trees
2200
x2761
1220D
Alex and Julian
bitmasks
,
math
,
number theory
1900
x3895
1220C
Substring Game in the Lesson
games
,
greedy
,
strings
1300
x10206
1220B
Multiplication Table
math
,
number theory
1300
x11603
1220A
Cards
implementation
,
sortings
,
strings
800
x29689
1219G
Harvester
implementation
2000
x656
1219C
Periodic integer number
implementation
,
strings
1700
x1785
1218I
The Light Square
2-sat
,
dfs and similar
,
greedy
2100
x599
1218H
Function Composition
dfs and similar
2900
x115
1218G
Alpha planetary system
constructive algorithms
,
graphs
,
shortest paths
3000
x100
1218F
Workout plan
data structures
,
greedy
1500
x2938
1218E
Product Tuples
divide and conquer
,
fft
2500
x377
1218D
Xor Spanning Tree
divide and conquer
,
fft
,
graphs
2400
x498
1218C
Jumping Transformers
dp
2600
x180
1218B
Guarding warehouses
data structures
,
geometry
3000
x70
1218A
BubbleReactor
dp
,
graphs
2800
x131
1217F
Forced Online Queries Problem
data structures
,
divide and conquer
,
dsu
,
graphs
,
trees
2600
x589
1217E
Sum Queries?
data structures
,
greedy
,
implementation
,
math
2300
x1880
1217D
Coloring Edges
constructive algorithms
,
dfs and similar
,
graphs
2100
x5294
1217C
The Number Of Good Substrings
binary search
,
bitmasks
,
brute force
1700
x7449
1217B
Zmei Gorynich
greedy
,
math
1600
x11211
1217A
Creating a Character
binary search
,
math
1300
x15002
1216F
Wi-Fi
data structures
,
dp
,
greedy
2100
x2616
1216E2
Numerical Sequence (hard version)
binary search
,
math
2200
x1460
1216E1
Numerical Sequence (easy version)
binary search
,
brute force
,
math
1900
x3441
1216D
Swords
math
1300
x11137
1216C
White Sheet
geometry
,
math
1700
x9211
1216B
Shooting
greedy
,
implementation
,
sortings
900
x18407
1216A
Prefixes
strings
800
x18654
1215F
Radio Stations
2-sat
2700
x977
1215E
Marbles
bitmasks
,
dp
2200
x3029
1215D
Ticket Game
games
,
greedy
,
math
1700
x6154
1215C
Swap Letters
constructive algorithms
,
greedy
1500
x11194
1215B
The Number of Products
combinatorics
,
dp
,
implementation
1400
x12962
1215A
Yellow Cards
greedy
,
implementation
,
math
1000
x11530
1214H
Tiles Placement
constructive algorithms
,
dfs and similar
,
trees
2800
x391
1214G
Feeling Good
bitmasks
,
data structures
3200
x310
1214F
Employment
greedy
,
sortings
2700
x430
1214E
Petya and Construction Set
constructive algorithms
,
graphs
,
math
,
sortings
,
trees
2000
x2697
1214D
Treasure Island
dfs and similar
,
dp
,
flows
,
hashing
1900
x5178
1214C
Bad Sequence
data structures
,
greedy
1200
x13261
1214B
Badges
brute force
,
math
1100
x10842
1214A
Optimal Currency Exchange
brute force
,
math
1400
x9092
1213G
Path Queries
divide and conquer
,
dsu
,
graphs
,
sortings
,
trees
1800
x7250
1213F
Unstable String Sort
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
implementation
,
strings
2100
x2596
1213E
Two Small Strings
brute force
,
constructive algorithms
1900
x5169
1213D2
Equalizing by Division (hard version)
brute force
,
math
,
sortings
1600
x11436
1213D1
Equalizing by Division (easy version)
brute force
,
implementation
1500
x11380
1213C
Book Reading
math
1200
x18433
1213B
Bad Prices
data structures
,
implementation
1100
x26589
1213A
Chips Moving
math
900
x24064
1211I
Unusual Graph
*special problem
,
graphs
3000
x40
1211H
Road Repair in Treeland
*special problem
,
binary search
,
dp
,
trees
3100
x45
1211G
King's Path
*special problem
,
math
,
trees
2500
x71
1211F
kotlinkotlinkotlinkotlin...
*special problem
,
graphs
,
implementation
,
strings
2300
x124
1211E
Double Permutation Inc.
*special problem
,
binary search
,
greedy
2000
x193
1211D
Teams
*special problem
,
binary search
,
greedy
,
math
2000
x229
1211C
Ice Cream
*special problem
,
greedy
,
sortings
1700
x486
1211B
Traveling Around the Golden Ring of Berland
*special problem
,
implementation
1500
x764
1211A
Three Problems
*special problem
,
implementation
1000
x1404
1210G
Mateusz and Escape Room
dp
3500
x168
1210F2
Marek and Matching (hard version)
brute force
,
probabilities
3200
x213
1210F1
Marek and Matching (easy version)
brute force
,
probabilities
3100
x205
1210E
Wojtek and Card Tricks
math
2700
x406
1210D
Konrad and Company Evaluation
graphs
2400
x1511
1210C
Kamil and Making a Stream
math
,
number theory
,
trees
2000
x3328
1210B
Marcin and Training Camp
brute force
,
greedy
1700
x5824
1210A
Anadi and Domino
brute force
,
graphs
1700
x5163
1209H
Moving Walkways
data structures
,
greedy
,
math
3300
x141
1209G2
Into Blocks (hard version)
data structures
3200
x442
1209G1
Into Blocks (easy version)
data structures
,
dsu
,
greedy
,
implementation
,
two pointers
2000
x3216
1209F
Koala and Notebook
data structures
,
dfs and similar
,
graphs
,
shortest paths
,
strings
,
trees
2600
x1148
1209E2
Rotate Columns (hard version)
bitmasks
,
dp
,
greedy
,
sortings
2500
x1968
1209E1
Rotate Columns (easy version)
bitmasks
,
brute force
,
dp
,
greedy
,
sortings
2000
x2969
1209D
Cow and Snacks
dfs and similar
,
dsu
,
graphs
1700
x9279
1209C
Paint the Digits
constructive algorithms
,
greedy
,
implementation
1500
x7497
1209B
Koala and Lights
implementation
,
math
,
number theory
1300
x8163
1209A
Paint the Numbers
greedy
,
implementation
,
math
800
x12197
←
1
2
...
43
44
45
46
47
...
98
99
→
User lists
Name