Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
→ Pay attention
Before contest
Codeforces Round 941 (Div. 1)
09:50:32
Register now »
*has extra registration
Before contest
Codeforces Round 941 (Div. 2)
09:50:32
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
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
1478C
Nezzar and Symmetric Array
implementation
,
math
,
sortings
1700
x9481
1684D
Traps
constructive algorithms
,
greedy
,
sortings
1700
x9283
1462E2
Close Tuples (hard version)
binary search
,
combinatorics
,
implementation
,
math
,
sortings
,
two pointers
1700
x9197
1253D
Harmonious Graph
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
sortings
1700
x8821
1783C
Yet Another Tournament
binary search
,
greedy
,
sortings
1700
x8760
1619E
MEX and Increments
constructive algorithms
,
data structures
,
dp
,
greedy
,
implementation
,
math
,
sortings
1700
x8638
382C
Arithmetic Progression
implementation
,
sortings
1700
x8151
1361A
Johnny and Contribution
constructive algorithms
,
graphs
,
greedy
,
sortings
1700
x8141
1893B
Neutral Tonality
constructive algorithms
,
greedy
,
sortings
,
two pointers
1700
x8023
1472E
Correct Placement
binary search
,
data structures
,
dp
,
sortings
,
two pointers
1700
x7704
1777C
Quiz Master
binary search
,
math
,
number theory
,
sortings
,
two pointers
1700
x7673
1779D
Boris and His Amazing Haircut
constructive algorithms
,
data structures
,
dp
,
dsu
,
greedy
,
sortings
1700
x7459
1257D
Yet Another Monster Killing Problem
binary search
,
data structures
,
dp
,
greedy
,
sortings
,
two pointers
1700
x7198
632C
The Smallest String Concatenation
sortings
,
strings
1700
x7184
1889B
Doremy's Connecting Plan
constructive algorithms
,
greedy
,
math
,
sortings
1700
x6696
1833F
Ira and Flamenco
combinatorics
,
constructive algorithms
,
data structures
,
implementation
,
math
,
sortings
,
two pointers
1700
x6621
1955E
Long Inversions
brute force
,
greedy
,
implementation
,
sortings
1700
x6611
1000C
Covered Points Count
data structures
,
implementation
,
sortings
1700
x6419
1930C
Lexicographically Largest
binary search
,
constructive algorithms
,
data structures
,
greedy
,
sortings
1700
x6323
1792D
Fixed Prefix Permutations
binary search
,
bitmasks
,
data structures
,
hashing
,
math
,
sortings
1700
x5859
439D
Devu and his Brother
binary search
,
sortings
,
ternary search
,
two pointers
1700
x5777
1102E
Monotonic Renumeration
combinatorics
,
sortings
1700
x5587
732D
Exams
binary search
,
greedy
,
sortings
1700
x5401
1884C
Medium Design
brute force
,
data structures
,
dp
,
greedy
,
sortings
1700
x5393
1148C
Crazy Diamond
constructive algorithms
,
sortings
1700
x5013
1310A
Recommendations
data structures
,
greedy
,
sortings
1700
x4965
567D
One-Dimensional Battle Ships
binary search
,
data structures
,
greedy
,
sortings
1700
x4640
1468D
Firecrackers
binary search
,
sortings
1700
x4456
978G
Petya's Exams
greedy
,
implementation
,
sortings
1700
x4189
761D
Dasha and Very Difficult Problem
binary search
,
brute force
,
constructive algorithms
,
greedy
,
sortings
1700
x3941
827A
String Reconstruction
data structures
,
greedy
,
sortings
,
strings
1700
x3936
729C
Road to Cinema
binary search
,
greedy
,
sortings
1700
x3835
631C
Report
data structures
,
sortings
1700
x3681
1687B
Railway System
constructive algorithms
,
graphs
,
greedy
,
interactive
,
sortings
1700
x3477
895B
XK Segments
binary search
,
math
,
sortings
,
two pointers
1700
x3416
160C
Find Pair
implementation
,
math
,
sortings
1700
x3380
1056C
Pick Heroes
greedy
,
implementation
,
interactive
,
sortings
1700
x2315
596C
Wilbur and Points
combinatorics
,
greedy
,
sortings
1700
x2234
925B
Resource Distribution
binary search
,
implementation
,
sortings
1700
x2174
161B
Discounts
constructive algorithms
,
greedy
,
sortings
1700
x1922
131E
Yet Another Task with Queens
sortings
1700
x1807
81C
Average Score
greedy
,
math
,
sortings
1700
x1624
216D
Spider's Web
binary search
,
sortings
,
two pointers
1700
x1319
159E
Zebra Tower
*special problem
,
data structures
,
greedy
,
sortings
1700
x987
1211C
Ice Cream
*special problem
,
greedy
,
sortings
1700
x476
1398D
Colored Rectangles
dp
,
greedy
,
sortings
1800
x10975
1437C
Chef Monocarp
dp
,
flows
,
graph matchings
,
greedy
,
math
,
sortings
1800
x10090
1475D
Cleaning the Phone
binary search
,
dp
,
sortings
,
two pointers
1800
x9695
459D
Pashmak and Parmida's problem
data structures
,
divide and conquer
,
sortings
1800
x9477
1401D
Maximum Distributed Tree
dfs and similar
,
dp
,
greedy
,
implementation
,
math
,
number theory
,
sortings
,
trees
1800
x8847
1572A
Book
binary search
,
brute force
,
data structures
,
dp
,
graphs
,
implementation
,
sortings
1800
x8511
1286A
Garland
dp
,
greedy
,
sortings
1800
x8381
1367D
Task On The Board
constructive algorithms
,
greedy
,
implementation
,
sortings
1800
x7960
1560E
Polycarp and String Transformation
binary search
,
implementation
,
sortings
,
strings
1800
x7639
1409E
Two Platforms
binary search
,
dp
,
sortings
,
two pointers
1800
x7538
1420D
Rescue Nibel!
combinatorics
,
data structures
,
sortings
1800
x7295
1619D
New Year's Problem
binary search
,
greedy
,
sortings
1800
x7225
1296E1
String Coloring (easy version)
constructive algorithms
,
dp
,
graphs
,
greedy
,
sortings
1800
x7086
1935C
Messenger in MAC
binary search
,
brute force
,
constructive algorithms
,
data structures
,
dp
,
greedy
,
sortings
1800
x7030
1213G
Path Queries
divide and conquer
,
dsu
,
graphs
,
sortings
,
trees
1800
x6595
830A
Office Keys
binary search
,
brute force
,
dp
,
greedy
,
sortings
1800
x6545
1859D
Andrey and Escape from Capygrad
binary search
,
data structures
,
dp
,
dsu
,
greedy
,
sortings
1800
x6509
1394A
Boboniu Chats with Du
dp
,
greedy
,
sortings
,
two pointers
1800
x6445
1870D
Prefix Purchase
greedy
,
implementation
,
sortings
1800
x6383
1721D
Maximum AND
bitmasks
,
dfs and similar
,
divide and conquer
,
greedy
,
sortings
1800
x6275
1156B
Ugly Pairs
dfs and similar
,
greedy
,
implementation
,
sortings
,
strings
1800
x6126
1705D
Mark and Lightbulbs
combinatorics
,
constructive algorithms
,
greedy
,
math
,
sortings
1800
x6084
1154E
Two Teams
data structures
,
implementation
,
sortings
1800
x6022
1801B
Buying gifts
data structures
,
greedy
,
sortings
1800
x5774
1552C
Maximize the Intersections
combinatorics
,
constructive algorithms
,
geometry
,
greedy
,
sortings
1800
x5767
1915G
Bicycles
graphs
,
greedy
,
implementation
,
shortest paths
,
sortings
1800
x5373
1133E
K Balanced Teams
dp
,
sortings
,
two pointers
1800
x5174
1176D
Recover it!
dfs and similar
,
graphs
,
greedy
,
number theory
,
sortings
1800
x5125
1941F
Rudolf and Imbalance
binary search
,
greedy
,
sortings
,
two pointers
1800
x5082
404C
Restore Graph
dfs and similar
,
graphs
,
sortings
1800
x4993
1249D2
Too Many Segments (hard version)
data structures
,
greedy
,
sortings
1800
x4863
1148D
Dirty Deeds Done Dirt Cheap
greedy
,
sortings
1800
x4858
527D
Clique Problem
data structures
,
dp
,
greedy
,
implementation
,
sortings
1800
x4645
1119D
Frets On Fire
binary search
,
sortings
1800
x4493
913D
Too Easy Problems
binary search
,
brute force
,
data structures
,
greedy
,
sortings
1800
x4492
1954D
Colored Balls
combinatorics
,
dp
,
math
,
sortings
1800
x4489
1077E
Thematic Contests
greedy
,
sortings
1800
x4351
1907F
Shift and Reverse
greedy
,
sortings
1800
x4330
922D
Robot Vacuum Cleaner
greedy
,
sortings
1800
x4228
1852B
Imbalanced Arrays
constructive algorithms
,
graphs
,
greedy
,
math
,
sortings
,
two pointers
1800
x4126
1282C
Petya and Exam
greedy
,
sortings
,
two pointers
1800
x4097
1081D
Maximum Distance
dsu
,
graphs
,
shortest paths
,
sortings
1800
x3875
652D
Nested Segments
data structures
,
sortings
1800
x3786
768C
Jon Snow and his Favourite Number
brute force
,
dp
,
implementation
,
sortings
1800
x3770
1904D2
Set To Max (Hard Version)
constructive algorithms
,
data structures
,
divide and conquer
,
greedy
,
implementation
,
sortings
1800
x3754
1005E1
Median on Segments (Permutations Edition)
sortings
1800
x3710
612D
The Union of k-Segments
greedy
,
sortings
1800
x3666
492D
Vanya and Computer Game
binary search
,
implementation
,
math
,
sortings
1800
x3115
652C
Foe Pairs
combinatorics
,
sortings
,
two pointers
1800
x3069
794C
Naming Company
games
,
greedy
,
sortings
1800
x3025
747D
Winter Is Coming
dp
,
greedy
,
sortings
1800
x2950
853B
Jury Meeting
greedy
,
sortings
,
two pointers
1800
x2503
38E
Let's Go Rolling!
dp
,
sortings
1800
x2480
432C
Prime Swaps
greedy
,
sortings
1800
x2430
433C
Ryouko's Memory Note
implementation
,
math
,
sortings
1800
x2395
←
1
2
...
4
5
6
7
8
...
10
11
→
User lists
Name