Enter
|
Register
Home
Top
Catalog
Contests
Gym
Problemset
Groups
Rating
Edu
API
Calendar
Help
→ Pay attention
Before contest
Codeforces Round 940 (Div. 2) and CodeCraft-23
40:05:04
Register now »
*has extra registration
→ Filter Problems
Difficulty:
—
implementation
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
1952D
Are You a Procrastinator?
implementation
x3978
1105D
Kilani and the Game
dfs and similar
,
graphs
,
implementation
,
shortest paths
1900
x3970
915E
Physical Education Lessons
data structures
,
implementation
,
sortings
2300
x3963
724B
Batch Sort
brute force
,
greedy
,
implementation
,
math
1500
x3960
443B
Kolya and Tandem Repeat
brute force
,
implementation
,
strings
1500
x3956
1624E
Masha-forgetful
brute force
,
constructive algorithms
,
dp
,
hashing
,
implementation
,
strings
2000
x3916
837C
Two Seals
brute force
,
implementation
1500
x3914
272B
Dima and Sequence
implementation
,
math
1400
x3910
1333F
Kate and imperfection
greedy
,
implementation
,
math
,
number theory
,
sortings
,
two pointers
2200
x3904
1118E
Yet Another Ball Problem
constructive algorithms
,
implementation
1700
x3899
590A
Median Smoothing
implementation
1700
x3892
1479B2
Painting the Array II
constructive algorithms
,
data structures
,
dp
,
greedy
,
implementation
2100
x3887
144C
Anagram Search
implementation
,
strings
1500
x3879
837B
Flag of Berland
brute force
,
implementation
1600
x3877
1200D
White Lines
brute force
,
data structures
,
dp
,
implementation
,
two pointers
1900
x3875
993A
Two Squares
geometry
,
implementation
1600
x3872
1311F
Moving Points
data structures
,
divide and conquer
,
implementation
,
sortings
1900
x3869
717C
Potions Homework
implementation
,
sortings
1200
x3860
1062D
Fun with Integers
dfs and similar
,
graphs
,
implementation
,
math
1800
x3857
1659D
Reverse Sort Sum
constructive algorithms
,
data structures
,
greedy
,
implementation
,
math
,
two pointers
1900
x3854
412C
Pattern
implementation
,
strings
1200
x3845
33A
What is for dinner?
greedy
,
implementation
1200
x3835
40A
Find Color
constructive algorithms
,
geometry
,
implementation
,
math
1300
x3834
1508B
Almost Sorted
binary search
,
combinatorics
,
constructive algorithms
,
implementation
1800
x3821
1363D
Guess The Maximums
binary search
,
implementation
,
interactive
,
math
2100
x3820
758C
Unfair Poll
binary search
,
constructive algorithms
,
implementation
,
math
1700
x3817
960C
Subsequence Counting
bitmasks
,
constructive algorithms
,
greedy
,
implementation
1700
x3805
439C
Devu and Partitioning of the Array
brute force
,
constructive algorithms
,
implementation
,
number theory
1700
x3792
1946D
Birthday Gift
bitmasks
,
brute force
,
constructive algorithms
,
greedy
,
implementation
1900
x3791
134A
Average Numbers
brute force
,
implementation
1200
x3789
1237D
Balanced Playlist
binary search
,
data structures
,
implementation
2000
x3779
768C
Jon Snow and his Favourite Number
brute force
,
dp
,
implementation
,
sortings
1800
x3769
1393D
Rarity and New Dress
dfs and similar
,
dp
,
implementation
,
shortest paths
2100
x3764
426B
Sereja and Mirroring
implementation
1300
x3763
551B
ZgukistringZ
brute force
,
constructive algorithms
,
implementation
,
strings
1800
x3755
990D
Graph And Its Complement
constructive algorithms
,
graphs
,
implementation
1700
x3753
1301D
Time to Run
constructive algorithms
,
graphs
,
implementation
2000
x3751
1280B
Beingawesomeism
implementation
,
math
1800
x3747
260B
Ancient Prophesy
brute force
,
implementation
,
strings
1600
x3733
124B
Permutations
brute force
,
combinatorics
,
implementation
1400
x3733
88A
Chord
brute force
,
implementation
1200
x3733
641B
Little Artem and Matrix
implementation
1400
x3728
1904D2
Set To Max (Hard Version)
constructive algorithms
,
data structures
,
divide and conquer
,
greedy
,
implementation
,
sortings
1800
x3723
1578E
Easy Scheduling
implementation
,
math
1200
x3722
1482D
Playlist
data structures
,
dsu
,
implementation
,
shortest paths
1900
x3722
1641B
Repetitions Decoding
constructive algorithms
,
implementation
,
sortings
2000
x3717
858D
Polycarp's phone book
data structures
,
implementation
,
sortings
1600
x3701
745B
Hongcow Solves A Puzzle
implementation
1400
x3697
1029D
Concatenated Multiples
implementation
,
math
1900
x3691
954C
Matrix Walk
implementation
1700
x3685
402B
Trees in a Row
brute force
,
implementation
1400
x3685
858B
Which floor?
brute force
,
implementation
1500
x3684
734D
Anton and Chess
implementation
1700
x3682
746C
Tram
constructive algorithms
,
implementation
,
math
1600
x3679
1797D
Li Hua and Tree
brute force
,
data structures
,
dfs and similar
,
dp
,
implementation
,
trees
1900
x3670
1107D
Compression
dp
,
implementation
,
math
,
number theory
1800
x3669
926A
2-3-numbers
implementation
,
math
1300
x3665
1927F
Microcycle
data structures
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
implementation
,
sortings
,
trees
1900
x3661
487A
Fight the Monster
binary search
,
brute force
,
implementation
1800
x3650
1770D
Koxia and Game
constructive algorithms
,
data structures
,
dfs and similar
,
dsu
,
flows
,
games
,
graph matchings
,
graphs
,
implementation
2000
x3646
1016C
Vasya And The Mushrooms
dp
,
implementation
1800
x3634
868B
Race Against Time
implementation
1400
x3628
1333D
Challenges in school №41
brute force
,
constructive algorithms
,
games
,
graphs
,
greedy
,
implementation
,
sortings
2100
x3627
41C
Email address
expression parsing
,
implementation
1300
x3625
1575J
Jeopardy of Dropped Balls
binary search
,
brute force
,
dsu
,
implementation
1500
x3624
1252C
Even Path
data structures
,
implementation
1600
x3619
56B
Spoilt Permutation
implementation
1300
x3610
1070H
BerOS File Suggestion
brute force
,
implementation
1500
x3607
1902D
Robot Queries
binary search
,
data structures
,
dp
,
implementation
1900
x3605
120C
Winnie-the-Pooh and honey
implementation
,
math
1100
x3573
1847D
Professor Higashikata
data structures
,
dsu
,
greedy
,
implementation
,
strings
1900
x3571
799C
Fountains
binary search
,
data structures
,
implementation
1800
x3569
940D
Alena And The Heater
binary search
,
implementation
1600
x3558
1808C
Unlucky Numbers
brute force
,
dp
,
greedy
,
implementation
1900
x3553
15A
Cottage Village
implementation
,
sortings
1200
x3551
321A
Ciel and Robot
binary search
,
implementation
,
math
1700
x3547
147A
Punctuation
implementation
,
strings
1300
x3543
1082D
Maximum Diameter Graph
constructive algorithms
,
graphs
,
implementation
1800
x3541
1580A
Portal
brute force
,
data structures
,
dp
,
greedy
,
implementation
1700
x3537
807B
T-Shirt Hunt
brute force
,
implementation
1300
x3525
46B
T-shirts from Sponsor
implementation
1100
x3525
332A
Down the Hatch!
implementation
1300
x3520
1646D
Weight the Tree
constructive algorithms
,
dfs and similar
,
dp
,
implementation
,
trees
2000
x3519
60A
Where Are My Flakes?
implementation
,
two pointers
1300
x3516
123A
Prime Permutation
implementation
,
number theory
,
strings
1300
x3505
673B
Problems for Round
greedy
,
implementation
1300
x3493
1196E
Connected Component on a Chessboard
constructive algorithms
,
implementation
1800
x3492
384B
Multitasking
greedy
,
implementation
,
sortings
,
two pointers
1500
x3471
1520G
To Go Or Not To Go?
brute force
,
dfs and similar
,
graphs
,
greedy
,
implementation
,
shortest paths
2200
x3461
280C
Game on Tree
implementation
,
math
,
probabilities
,
trees
2200
x3448
390A
Inna and Alarm Clock
implementation
x3441
630L
Cracking the Code
implementation
,
math
1400
x3440
827B
High Load
constructive algorithms
,
greedy
,
implementation
,
trees
1800
x3433
1905D
Cyclic MEX
data structures
,
implementation
,
math
,
two pointers
2000
x3432
228B
Two Tables
brute force
,
implementation
1400
x3430
1163C2
Power Transmission (Hard Edition)
data structures
,
geometry
,
implementation
,
math
1900
x3427
917A
The Monster
dp
,
greedy
,
implementation
,
math
1800
x3421
666A
Reberland Linguistics
dp
,
implementation
,
strings
1800
x3412
581D
Three Logos
bitmasks
,
brute force
,
constructive algorithms
,
geometry
,
implementation
,
math
1700
x3407
1266D
Decreasing Debts
constructive algorithms
,
data structures
,
graphs
,
greedy
,
implementation
,
math
,
two pointers
2000
x3405
←
1
2
...
16
17
18
19
20
...
26
27
→
User lists
Name