Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
→ Pay attention
Before contest
Codeforces Round 946 (Div. 3)
43:42:41
Register now »
→ Filter Problems
Difficulty:
—
brute force
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
452A
Eevee
brute force
,
implementation
,
strings
1000
x7905
1916D
Mathematical Problem
brute force
,
constructive algorithms
,
geometry
,
math
1700
x7915
629B
Far Relative’s Problem
brute force
1100
x7953
1335E2
Three Blocks Palindrome (hard version)
brute force
,
data structures
,
dp
,
two pointers
1800
x7988
653A
Bear and Three Balls
brute force
,
implementation
,
sortings
900
x8016
1358D
The Best Vacation
binary search
,
brute force
,
greedy
,
implementation
,
two pointers
1900
x8031
1615C
Menorah
brute force
,
graphs
,
greedy
,
math
1600
x8066
1677A
Tokitsukaze and Strange Inequality
brute force
,
data structures
,
dp
1600
x8125
997A
Convert to Ones
brute force
,
greedy
,
implementation
,
math
1500
x8166
940A
Points on the line
brute force
,
greedy
,
sortings
1200
x8169
1660D
Maximum Product Strikes Back
brute force
,
implementation
,
math
,
two pointers
1600
x8181
475B
Strongly Connected City
brute force
,
dfs and similar
,
graphs
,
implementation
1400
x8250
1948D
Tandem Repeats?
brute force
,
strings
,
two pointers
1700
x8259
798B
Mike and strings
brute force
,
dp
,
strings
1300
x8272
548B
Mike and Fun
brute force
,
dp
,
greedy
,
implementation
1400
x8281
1770C
Koxia and Number Theory
brute force
,
chinese remainder theorem
,
math
,
number theory
1700
x8290
1732D1
Balance (Easy version)
brute force
,
data structures
,
implementation
,
number theory
1500
x8296
922B
Magic Forest
brute force
1300
x8306
1290A
Mind Control
brute force
,
data structures
,
implementation
1600
x8317
1130C
Connect
brute force
,
dfs and similar
,
dsu
1400
x8333
602A
Two Bases
brute force
,
implementation
1100
x8366
855B
Marvolo Gaunt's Ring
brute force
,
data structures
,
dp
1500
x8373
749B
Parallelogram is Back
brute force
,
constructive algorithms
,
geometry
1200
x8375
46A
Ball Game
brute force
,
implementation
800
x8393
978D
Almost Arithmetic Progression
brute force
,
implementation
,
math
1500
x8402
916A
Jamie and Alarm Snooze
brute force
,
implementation
,
math
900
x8482
195A
Let's Watch Football
binary search
,
brute force
,
math
1000
x8494
1023A
Single Wildcard Pattern Matching
brute force
,
implementation
,
strings
1200
x8523
868A
Bark to Unlock
brute force
,
implementation
,
strings
900
x8528
416B
Art Union
brute force
,
dp
,
implementation
1300
x8528
710B
Optimal Point on a Line
brute force
,
sortings
1400
x8534
1572A
Book
binary search
,
brute force
,
data structures
,
dp
,
graphs
,
implementation
,
sortings
1800
x8558
1500A
Going Home
brute force
,
hashing
,
implementation
,
math
1800
x8564
1523C
Compression and Expansion
brute force
,
data structures
,
greedy
,
implementation
,
trees
1600
x8598
1826D
Running Miles
brute force
,
dp
,
greedy
1700
x8633
1786B
Cake Assembly Line
brute force
,
sortings
1300
x8639
1121B
Mike and Children
brute force
,
implementation
1200
x8643
1225C
p-binary
bitmasks
,
brute force
,
math
1600
x8655
1311D
Three Integers
brute force
,
math
2000
x8665
344B
Simple Molecules
brute force
,
graphs
,
math
1200
x8687
409H
A + B Strikes Back
*special problem
,
brute force
,
constructive algorithms
,
dsu
,
implementation
1500
x8691
1214A
Optimal Currency Exchange
brute force
,
math
1400
x8705
289A
Polo the Penguin and Segments
brute force
,
implementation
1100
x8723
1714D
Color with Occurrences
brute force
,
data structures
,
dp
,
greedy
,
strings
1600
x8737
938B
Run For Your Prize
brute force
,
greedy
1100
x8738
1375D
Replace by MEX
brute force
,
constructive algorithms
,
sortings
1900
x8745
681B
Economy Game
brute force
1300
x8774
740A
Alyona and copybooks
brute force
,
implementation
1300
x8814
919C
Seat Arrangements
brute force
,
implementation
1300
x8824
584D
Dima and Lisa
brute force
,
math
,
number theory
1800
x8856
1907E
Good Triples
brute force
,
combinatorics
,
number theory
1600
x8867
864B
Polycarp and Letters
brute force
,
implementation
,
strings
1000
x8892
300C
Beautiful Numbers
brute force
,
combinatorics
1800
x8893
1269B
Modulo Equality
brute force
,
sortings
1500
x8901
816A
Karen and Morning
brute force
,
implementation
1000
x8905
490C
Hacking Cypher
brute force
,
math
,
number theory
,
strings
1700
x8910
1461D
Divide and Summarize
binary search
,
brute force
,
data structures
,
divide and conquer
,
implementation
,
sortings
1600
x8915
218A
Mountain Scenery
brute force
,
constructive algorithms
,
implementation
1100
x8930
259A
Little Elephant and Chess
brute force
,
strings
1000
x8943
704A
Thor
brute force
,
data structures
,
implementation
1600
x8944
982A
Row
brute force
,
constructive algorithms
1200
x8946
1921E
Eat the Chip
brute force
,
games
,
greedy
,
math
1600
x8949
1731C
Even Subarrays
bitmasks
,
brute force
,
hashing
,
math
,
number theory
1700
x8992
742B
Arpa’s obvious problem and Mehrdad’s terrible solution
brute force
,
math
,
number theory
1500
x9045
981A
Antipalindrome
brute force
,
implementation
,
strings
900
x9067
1482C
Basic Diplomacy
brute force
,
constructive algorithms
,
greedy
,
implementation
1600
x9101
463A
Caisa and Sugar
brute force
,
implementation
1200
x9107
631A
Interview
brute force
,
implementation
900
x9138
1051C
Vasya and Multisets
brute force
,
dp
,
greedy
,
implementation
,
math
1500
x9146
347B
Fixed Points
brute force
,
implementation
,
math
1100
x9151
909A
Generate Login
brute force
,
greedy
,
sortings
1000
x9162
1469D
Ceil Divisions
brute force
,
constructive algorithms
,
math
,
number theory
1700
x9169
1287B
Hyperset
brute force
,
data structures
,
implementation
1500
x9184
1498C
Planar Reflections
brute force
,
data structures
,
dp
1600
x9202
246D
Colorful Graph
brute force
,
dfs and similar
,
graphs
1600
x9214
1016B
Segment Occurrences
brute force
,
implementation
1300
x9255
1140C
Playlist
brute force
,
data structures
,
sortings
1600
x9272
1681D
Required Length
brute force
,
dfs and similar
,
dp
,
hashing
,
shortest paths
1700
x9280
898B
Proper Nutrition
brute force
,
implementation
,
number theory
1100
x9298
1198B
Welfare State
binary search
,
brute force
,
data structures
,
sortings
1600
x9323
822B
Crossword solving
brute force
,
implementation
,
strings
1000
x9326
869A
The Artful Expedient
brute force
,
implementation
1100
x9364
385C
Bear and Prime Numbers
binary search
,
brute force
,
data structures
,
dp
,
implementation
,
math
,
number theory
1700
x9396
1917C
Watering an Array
brute force
,
greedy
,
implementation
,
math
1600
x9439
875A
Classroom Watch
brute force
,
math
1200
x9495
1321C
Remove Adjacent
brute force
,
constructive algorithms
,
greedy
,
strings
1600
x9515
1191B
Tokitsukaze and Mahjong
brute force
,
implementation
1200
x9525
385B
Bear and Strings
brute force
,
greedy
,
implementation
,
math
,
strings
1200
x9546
1485C
Floor and Mod
binary search
,
brute force
,
math
,
number theory
1700
x9551
1814B
Long Legs
brute force
,
math
1700
x9557
1765E
Exchange
brute force
,
math
1000
x9559
891A
Pride
brute force
,
dp
,
greedy
,
math
,
number theory
1500
x9637
554B
Ohana Cleans Up
brute force
,
greedy
,
strings
1200
x9693
1659C
Line Empire
binary search
,
brute force
,
dp
,
greedy
,
implementation
,
math
1500
x9733
1105B
Zuhair and Strings
brute force
,
implementation
,
strings
1100
x9797
611B
New Year and Old Property
bitmasks
,
brute force
,
implementation
1300
x9797
1011B
Planning The Expedition
binary search
,
brute force
,
implementation
1200
x9812
1400D
Zigzags
brute force
,
combinatorics
,
data structures
,
math
,
two pointers
1900
x9820
548A
Mike and Fax
brute force
,
implementation
,
strings
1100
x9837
1849C
Binary String Copying
binary search
,
brute force
,
data structures
,
hashing
,
strings
1600
x9882
←
1
2
...
9
10
11
12
13
...
15
16
→
User lists
Name