Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
→ Pay attention
Before contest
Codeforces Round 941 (Div. 1)
2 days
Register now »
*has extra registration
Before contest
Codeforces Round 941 (Div. 2)
2 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
1230B
Ania and Minimizing
greedy
,
implementation
1000
x18283
1230A
Dawid and Bags of Candies
brute force
,
implementation
800
x20951
1228F
One Node is Gone
constructive algorithms
,
implementation
,
trees
2500
x417
1228E
Another Filling the Grid
combinatorics
,
dp
,
math
2300
x2485
1228D
Complete Tripartite
brute force
,
constructive algorithms
,
graphs
,
hashing
,
implementation
1900
x4963
1228C
Primes and Multiplication
math
,
number theory
1700
x8674
1228B
Filling the Grid
implementation
,
math
1400
x11286
1228A
Distinct Digits
brute force
,
implementation
800
x21192
1227G
Not Same
constructive algorithms
2600
x953
1227F2
Wrong Answer on test 233 (Hard Version)
combinatorics
,
math
2400
x1458
1227F1
Wrong Answer on test 233 (Easy Version)
dp
2200
x1751
1227E
Arson In Berland Forest
binary search
,
graphs
,
graphs
,
shortest paths
2200
x1434
1227D2
Optimal Subsequences (Hard Version)
data structures
,
greedy
1800
x4222
1227D1
Optimal Subsequences (Easy Version)
data structures
,
greedy
1600
x6117
1227C
Messy
constructive algorithms
1700
x5269
1227B
Box
constructive algorithms
1200
x9221
1227A
Math Problem
math
1100
x9461
1225G
To Make 1
bitmasks
,
constructive algorithms
,
dp
,
greedy
,
number theory
3100
x521
1225F
Tree Factory
constructive algorithms
,
greedy
,
trees
2500
x863
1225E
Rock Is Push
binary search
,
dp
2200
x1785
1225D
Power Products
hashing
,
math
,
number theory
1800
x7363
1225C
p-binary
bitmasks
,
brute force
,
math
1600
x8638
1225B2
TV Subscriptions (Hard Version)
implementation
,
two pointers
1300
x10068
1225B1
TV Subscriptions (Easy Version)
implementation
1000
x11590
1225A
Forgetting Things
math
900
x15497
1223G
Wooden Raft
binary search
,
math
,
number theory
3200
x226
1223F
Stack Exterminable Arrays
data structures
,
divide and conquer
,
dp
,
hashing
2600
x1940
1223E
Paint the Tree
dp
,
sortings
,
trees
2100
x2513
1223D
Sequence Sorting
dp
,
greedy
,
two pointers
2000
x3923
1223C
Save the Nature
binary search
,
greedy
1600
x7721
1223B
Strings Equalization
strings
1000
x14424
1223A
CME
math
800
x21297
1221G
Graph And Numbers
bitmasks
,
brute force
,
combinatorics
,
dp
,
meet-in-the-middle
2900
x518
1221F
Choose a Square
binary search
,
data structures
,
sortings
2400
x973
1221E
Game With String
games
2500
x1015
1221D
Make The Fence Great Again
dp
1800
x8593
1221C
Perfect Team
binary search
,
math
1200
x20089
1221B
Knights
constructive algorithms
,
greedy
1100
x11575
1221A
2048 Game
brute force
,
greedy
,
math
1000
x16295
1220G
Geolocation
geometry
3400
x48
1220F
Gardener Alex
binary search
,
data structures
2700
x656
1220E
Tourism
dfs and similar
,
dp
,
dsu
,
graphs
,
greedy
,
trees
2200
x2540
1220D
Alex and Julian
bitmasks
,
math
,
number theory
1900
x3684
1220C
Substring Game in the Lesson
games
,
greedy
,
strings
1300
x9888
1220B
Multiplication Table
math
,
number theory
1300
x11329
1220A
Cards
implementation
,
sortings
,
strings
800
x28773
1219G
Harvester
implementation
2000
x601
1219C
Periodic integer number
implementation
,
strings
1700
x1751
1218I
The Light Square
2-sat
,
dfs and similar
,
greedy
2100
x571
1218H
Function Composition
dfs and similar
2900
x108
1218G
Alpha planetary system
constructive algorithms
,
graphs
,
shortest paths
3000
x87
1218F
Workout plan
data structures
,
greedy
1500
x2875
1218E
Product Tuples
divide and conquer
,
fft
2500
x355
1218D
Xor Spanning Tree
divide and conquer
,
fft
,
graphs
2400
x312
1218C
Jumping Transformers
dp
2600
x171
1218B
Guarding warehouses
data structures
,
geometry
3000
x68
1218A
BubbleReactor
dp
,
graphs
2800
x106
1217F
Forced Online Queries Problem
data structures
,
divide and conquer
,
dsu
,
graphs
,
trees
2600
x538
1217E
Sum Queries?
data structures
,
greedy
,
implementation
,
math
2300
x1639
1217D
Coloring Edges
constructive algorithms
,
dfs and similar
,
graphs
2100
x4933
1217C
The Number Of Good Substrings
binary search
,
bitmasks
,
brute force
1700
x7082
1217B
Zmei Gorynich
greedy
,
math
1600
x10897
1217A
Creating a Character
binary search
,
math
1300
x14624
1216F
Wi-Fi
data structures
,
dp
,
greedy
2100
x2328
1216E2
Numerical Sequence (hard version)
binary search
,
math
2200
x1422
1216E1
Numerical Sequence (easy version)
binary search
,
brute force
,
math
1900
x3345
1216D
Swords
math
1300
x10804
1216C
White Sheet
geometry
,
math
1700
x8755
1216B
Shooting
greedy
,
implementation
,
sortings
900
x18019
1216A
Prefixes
strings
800
x18335
1215F
Radio Stations
2-sat
2700
x907
1215E
Marbles
bitmasks
,
dp
2200
x2909
1215D
Ticket Game
games
,
greedy
,
math
1700
x5964
1215C
Swap Letters
constructive algorithms
,
greedy
1500
x10791
1215B
The Number of Products
combinatorics
,
dp
,
implementation
1400
x12036
1215A
Yellow Cards
greedy
,
implementation
,
math
1000
x11245
1214H
Tiles Placement
constructive algorithms
,
dfs and similar
,
trees
2800
x369
1214G
Feeling Good
bitmasks
,
data structures
3200
x279
1214F
Employment
greedy
,
sortings
2700
x422
1214E
Petya and Construction Set
constructive algorithms
,
graphs
,
math
,
sortings
,
trees
2000
x2505
1214D
Treasure Island
dfs and similar
,
dp
,
flows
,
hashing
1900
x4927
1214C
Bad Sequence
data structures
,
greedy
1200
x12808
1214B
Badges
brute force
,
math
1100
x10507
1214A
Optimal Currency Exchange
brute force
,
math
1400
x8692
1213G
Path Queries
divide and conquer
,
dsu
,
graphs
,
sortings
,
trees
1800
x6584
1213F
Unstable String Sort
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
implementation
,
strings
2100
x2323
1213E
Two Small Strings
brute force
,
constructive algorithms
1900
x4905
1213D2
Equalizing by Division (hard version)
brute force
,
math
,
sortings
1600
x11019
1213D1
Equalizing by Division (easy version)
brute force
,
implementation
1500
x11002
1213C
Book Reading
math
1200
x17928
1213B
Bad Prices
data structures
,
implementation
1100
x25561
1213A
Chips Moving
math
900
x23460
1211I
Unusual Graph
*special problem
,
graphs
3000
x34
1211H
Road Repair in Treeland
*special problem
,
binary search
,
dp
,
trees
3100
x41
1211G
King's Path
*special problem
,
math
,
trees
2500
x66
1211F
kotlinkotlinkotlinkotlin...
*special problem
,
graphs
,
implementation
,
strings
2300
x118
1211E
Double Permutation Inc.
*special problem
,
binary search
,
greedy
2000
x188
1211D
Teams
*special problem
,
binary search
,
greedy
,
math
2000
x223
1211C
Ice Cream
*special problem
,
greedy
,
sortings
1700
x476
1211B
Traveling Around the Golden Ring of Berland
*special problem
,
implementation
1500
x753
←
1
2
...
39
40
41
42
43
...
94
95
→
User lists
Name