Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
Rating changes for last rounds are temporarily rolled back. They will be returned soon.
×
→ Pay attention
Before contest
Codeforces Round 941 (Div. 1)
4 days
Register now »
*has extra registration
Before contest
Codeforces Round 941 (Div. 2)
4 days
Register now »
*has extra registration
→ Filter Problems
Difficulty:
—
data structures
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
280E
Sequence Transformation
brute force
,
data structures
,
dp
,
implementation
,
math
3000
x196
1956F
Nene and the Passing Game
constructive algorithms
,
data structures
,
dsu
,
graphs
,
sortings
3000
x202
533D
Landmarks
data structures
,
dp
3000
x215
1743G
Antifibonacci Cut
bitmasks
,
combinatorics
,
constructive algorithms
,
data structures
,
dp
,
hashing
,
math
3000
x244
274E
Mirror Room
data structures
,
implementation
3000
x299
1615H
Reindeer Games
binary search
,
constructive algorithms
,
data structures
,
divide and conquer
,
flows
,
graphs
,
shortest paths
3000
x307
773E
Blog Post Rating
data structures
,
sortings
3000
x315
1252D
Find String in a Grid
data structures
,
dp
,
strings
,
trees
3000
x324
1797F
Li Hua and Path
data structures
,
dfs and similar
,
divide and conquer
,
dsu
,
trees
3000
x326
533A
Berland Miners
binary search
,
data structures
,
dfs and similar
,
greedy
,
trees
3000
x345
1418F
Equal Product
data structures
,
math
,
number theory
,
two pointers
3000
x352
297E
Mystic Carvings
data structures
3000
x352
436F
Banners
brute force
,
data structures
,
dp
3000
x358
1651F
Tower Defense
binary search
,
brute force
,
data structures
3000
x361
1609G
A Stroll Around the Matrix
data structures
,
greedy
,
math
3000
x361
1920F2
Smooth Sailing (Hard Version)
binary search
,
data structures
,
dsu
,
geometry
,
graphs
,
trees
3000
x392
1787G
Colorful Tree Again
brute force
,
data structures
,
trees
3000
x392
264E
Roadside Trees
data structures
,
dp
3000
x394
1583G
Omkar and Time Travel
data structures
,
math
3000
x399
1178G
The Awesomest Vertex
data structures
,
dfs and similar
3000
x406
1763F
Edge Queries
data structures
,
dfs and similar
,
dp
,
dsu
,
graphs
,
trees
3000
x417
1175G
Yet Another Partiton Problem
data structures
,
divide and conquer
,
dp
,
geometry
,
two pointers
3000
x428
1801E
Gasoline prices
data structures
,
divide and conquer
,
dsu
,
hashing
,
trees
3000
x432
1535F
String Distance
binary search
,
brute force
,
data structures
,
hashing
,
implementation
,
strings
3000
x437
1076G
Array Game
data structures
,
games
3000
x444
573D
Bear and Cavalry
data structures
,
divide and conquer
,
dp
3000
x445
1824D
LuoTianyi and the Function
data structures
3000
x448
798E
Mike and code of a permutation
constructive algorithms
,
data structures
,
graphs
,
sortings
3000
x454
696E
...Wait for it...
data structures
,
dsu
,
trees
3000
x475
793F
Julia the snail
data structures
,
divide and conquer
,
dp
3000
x505
568E
Longest Increasing Subsequence
data structures
,
dp
3000
x572
1476F
Lanterns
binary search
,
data structures
,
dp
3000
x612
1320E
Treeland and Viruses
data structures
,
dfs and similar
,
dp
,
shortest paths
,
trees
3000
x616
319E
Ping-Pong
data structures
3000
x630
1844G
Tree Weights
bitmasks
,
constructive algorithms
,
data structures
,
dfs and similar
,
implementation
,
math
,
matrices
,
number theory
,
trees
3000
x636
1616H
Keep XOR Low
bitmasks
,
combinatorics
,
data structures
,
divide and conquer
,
dp
,
math
3000
x777
150E
Freezing with Style
binary search
,
data structures
,
divide and conquer
,
trees
3000
x784
1163F
Indecisive Taxi Fee
data structures
,
graphs
,
shortest paths
3000
x816
587F
Duff is Mad
data structures
,
strings
3000
x986
997E
Good Subsegments
data structures
3000
x1073
603E
Pastoral Oddities
data structures
,
divide and conquer
,
dsu
,
math
,
trees
3000
x1148
1446D2
Frequency Problem (Hard Version)
data structures
,
greedy
,
two pointers
3000
x1209
464E
The Classic Problem
data structures
,
graphs
,
shortest paths
3000
x1291
914F
Substrings in a String
bitmasks
,
brute force
,
data structures
,
string suffix structures
,
strings
3000
x1414
739E
Gosha is hunting
brute force
,
data structures
,
dp
,
flows
,
math
,
probabilities
,
sortings
3000
x2043
526F
Pudding Monsters
data structures
,
divide and conquer
3000
x2296
187E
Heaven Tour
data structures
,
greedy
2900
x91
1386B
Mixture
*special problem
,
data structures
,
geometry
,
math
,
sortings
2900
x118
1726F
Late For Work (submissions are not allowed)
data structures
,
greedy
,
schedules
,
shortest paths
2900
x131
862F
Mahmoud and Ehab and the final stage
data structures
,
strings
2900
x197
1468B
Bakery
data structures
,
dsu
2900
x198
403E
Two Rooted Trees
data structures
,
implementation
,
trees
2900
x201
1928F
Digital Patterns
combinatorics
,
data structures
,
implementation
,
math
2900
x205
1735F
Pebbles and Beads
data structures
,
geometry
2900
x218
475F
Meta-universe
data structures
2900
x225
145D
Lucky Pair
combinatorics
,
data structures
,
implementation
2900
x237
1056G
Take Metro
brute force
,
data structures
,
graphs
2900
x238
238D
Tape Programming
data structures
,
implementation
2900
x244
1860F
Evaluate RBS
data structures
,
geometry
,
implementation
,
math
,
sortings
2900
x262
117E
Tree or not Tree
data structures
,
divide and conquer
,
implementation
,
trees
2900
x307
788E
New task
data structures
2900
x330
1359F
RC Kaboom Show
binary search
,
brute force
,
data structures
,
geometry
,
math
2900
x348
925E
May Holidays
data structures
,
trees
2900
x351
1654G
Snowy Mountain
data structures
,
dfs and similar
,
graphs
,
greedy
,
shortest paths
,
trees
2900
x353
1051G
Distinctification
data structures
,
dsu
,
greedy
2900
x358
193D
Two Segments
data structures
2900
x387
1455G
Forbidden Value
data structures
,
dp
2900
x395
930E
Coins Exhibition
data structures
,
dp
,
math
2900
x404
1500D
Tiles for Bathroom
data structures
,
sortings
,
two pointers
2900
x410
226E
Noble Knight's Path
data structures
,
trees
2900
x431
232D
Fence
binary search
,
data structures
,
string suffix structures
2900
x440
1601E
Phys Ed Online
data structures
,
dp
,
greedy
2900
x461
763E
Timofey and our friends animals
data structures
,
divide and conquer
,
dsu
2900
x475
1677E
Tokitsukaze and Beautiful Subsegments
data structures
2900
x504
1085G
Beautiful Matrix
combinatorics
,
data structures
,
dp
2900
x505
763D
Timofey and a flat tree
data structures
,
graphs
,
hashing
,
shortest paths
,
trees
2900
x514
1687D
Cute number
binary search
,
brute force
,
data structures
,
dsu
,
implementation
,
math
2900
x555
455E
Function
data structures
2900
x653
587E
Duff as a Queen
data structures
2900
x683
809D
Hitchhiking in the Baltic States
data structures
,
dp
2900
x754
802O
April Fools' Problem (hard)
binary search
,
data structures
,
flows
2900
x814
1083C
Max Mex
data structures
,
trees
2900
x836
938G
Shortest Path Queries
bitmasks
,
data structures
,
dsu
,
graphs
2900
x853
1129D
Isolation
data structures
,
dp
2900
x942
1479D
Odd Mineral Resource
binary search
,
bitmasks
,
brute force
,
data structures
,
probabilities
,
trees
2900
x951
671D
Roads in Yusland
data structures
,
dp
,
greedy
2900
x1106
741D
Arpa’s letter-marked tree and Mehrdad’s Dokhtar-kosh paths
data structures
,
dfs and similar
,
trees
2900
x2434
1488H
Build From Suffixes
*special problem
,
combinatorics
,
data structures
2800
x52
962G
Visible Black Areas
data structures
,
dsu
,
geometry
,
trees
2800
x125
796F
Sequence Recovery
bitmasks
,
data structures
,
greedy
2800
x169
1425I
Impressive Harvesting of The Orchard
data structures
2800
x227
1109C
Sasha and a Patient Friend
binary search
,
data structures
,
implementation
2800
x244
1900F
Local Deletions
binary search
,
data structures
,
implementation
2800
x253
1913F
Palindromic Problem
binary search
,
data structures
,
hashing
,
string suffix structures
,
strings
2800
x285
217E
Alien DNA
data structures
,
dsu
,
trees
2800
x290
1904F
Beautiful Tree
data structures
,
dfs and similar
,
graphs
,
implementation
,
trees
2800
x301
1633F
Perfect Matching
data structures
,
divide and conquer
,
interactive
,
trees
2800
x306
1578B
Building Forest Trails
data structures
,
dsu
2800
x321
625E
Frog Fights
data structures
,
greedy
2800
x323
1844F2
Min Cost Permutation (Hard Version)
binary search
,
constructive algorithms
,
data structures
,
greedy
,
math
,
sortings
2800
x367
←
1
2
3
4
5
...
16
17
→
User lists
Name