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Contest is running
Codeforces Round 953 (Div. 2)
01:19:27
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Difficulty:
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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
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Problems
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Problems
#
Name
816A
Karen and Morning
brute force
,
implementation
1000
x8943
814A
An abandoned sentiment from past
constructive algorithms
,
greedy
,
implementation
,
sortings
900
x10292
811A
Vladik and Courtesy
brute force
,
implementation
800
x11806
810A
Straight <<A>>
implementation
,
math
900
x8736
808A
Lucky Year
implementation
900
x9124
807A
Is it rated?
implementation
,
sortings
900
x19749
805B
3-palindrome
constructive algorithms
1000
x16373
805A
Fake NP
greedy
,
math
1000
x17681
804A
Find Amir
constructive algorithms
,
greedy
,
math
1000
x15277
802G
Fake News (easy)
implementation
,
strings
800
x6775
801B
Valued Keys
constructive algorithms
,
greedy
,
strings
900
x10072
798A
Mike and palindrome
brute force
,
constructive algorithms
,
strings
1000
x21151
796A
Buying A House
brute force
,
implementation
800
x12868
794A
Bank Robbery
brute force
,
implementation
800
x6939
793A
Oleg and shares
implementation
,
math
900
x6623
791A
Bear and Big Brother
implementation
800
x182393
785A
Anton and Polyhedrons
implementation
,
strings
800
x83786
780A
Andryusha and Socks
implementation
800
x18797
779A
Pupils Redistribution
constructive algorithms
,
math
1000
x9255
777A
Shell Game
constructive algorithms
,
implementation
,
math
1000
x10067
776A
A Serial Killer
brute force
,
implementation
,
strings
900
x11885
770A
New Password
*special problem
,
implementation
800
x18976
769A
Year of University Entrance
*special problem
,
implementation
,
sortings
800
x5602
768A
Oath of the Night's Watch
constructive algorithms
,
sortings
900
x26448
766B
Mahmoud and a Triangle
constructive algorithms
,
geometry
,
greedy
,
math
,
number theory
,
sortings
1000
x31493
766A
Mahmoud and Longest Uncommon Subsequence
constructive algorithms
,
strings
1000
x29258
765A
Neverending competitions
implementation
,
math
900
x8900
764B
Timofey and cubes
constructive algorithms
,
implementation
900
x11666
764A
Taymyr is calling you
brute force
,
implementation
,
math
800
x16079
761A
Dasha and Stairs
brute force
,
constructive algorithms
,
implementation
,
math
1000
x14365
760A
Petr and a calendar
implementation
,
math
800
x7755
758A
Holiday Of Equality
implementation
,
math
800
x58155
757A
Gotta Catch Em' All!
implementation
1000
x11117
755A
PolandBall and Hypothesis
brute force
,
graphs
,
math
,
number theory
800
x17622
753A
Santa Claus and Candies
dp
,
greedy
,
math
1000
x8817
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x72006
749A
Bachgold Problem
greedy
,
implementation
,
math
,
number theory
800
x47182
748A
Santa Claus and a Place in a Class
implementation
,
math
800
x8663
747B
Mammoth's Genome Decoding
implementation
,
strings
900
x8604
747A
Display Size
brute force
,
math
800
x10065
746B
Decoding
implementation
,
strings
900
x26577
746A
Compote
implementation
,
math
800
x20987
745A
Hongcow Learns the Cyclic Shift
implementation
,
strings
900
x10327
742A
Arpa’s hard exam and Mehrdad’s naive cheat
implementation
,
math
,
number theory
1000
x40489
735A
Ostap and Grasshopper
implementation
,
strings
800
x12339
734B
Anton and Digits
brute force
,
greedy
,
implementation
,
math
800
x28686
734A
Anton and Danik
implementation
,
strings
800
x142833
733A
Grasshopper And the String
implementation
1000
x16002
732B
Cormen --- The Best Friend Of a Man
dp
,
greedy
1000
x24167
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x68491
731A
Night at the Museum
implementation
,
strings
800
x43714
729A
Interview with Oleg
implementation
,
strings
900
x7331
727A
Transformation: from A to B
brute force
,
dfs and similar
,
math
1000
x13392
725A
Jumping Ball
implementation
1000
x7034
724A
Checking the Calendar
implementation
1000
x7014
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x72520
721A
One-dimensional Japanese Crossword
implementation
800
x18144
716A
Crazy Computer
implementation
800
x21864
712A
Memory and Crow
implementation
,
math
800
x11538
711A
Bus to Udayland
brute force
,
implementation
800
x28924
710A
King Moves
implementation
800
x13602
709A
Juicer
implementation
900
x30469
707A
Brain's Photos
implementation
800
x47065
706A
Beru-taxi
brute force
,
geometry
,
implementation
900
x14324
705A
Hulk
implementation
800
x100915
703A
Mishka and Game
implementation
800
x54202
702A
Maximum Increase
dp
,
greedy
,
implementation
800
x42591
701A
Cards
greedy
,
implementation
800
x19234
699A
Launch of Collider
implementation
1000
x15289
697A
Pineapple Incident
implementation
,
math
900
x12627
691A
Fashion in Berland
implementation
1000
x9966
688B
Lovely Palindromes
constructive algorithms
,
math
1000
x30829
688A
Opponents
implementation
800
x13790
686A
Free Ice Cream
constructive algorithms
,
implementation
800
x35972
681A
A Good Contest
implementation
800
x15141
680B
Bear and Finding Criminals
constructive algorithms
,
implementation
1000
x23611
680A
Bear and Five Cards
constructive algorithms
,
implementation
800
x12232
678A
Johny Likes Numbers
implementation
,
math
800
x12636
677A
Vanya and Fence
implementation
800
x132923
676A
Nicholas and Permutation
constructive algorithms
,
implementation
800
x13676
673A
Bear and Game
implementation
800
x9938
672B
Different is Good
constructive algorithms
,
implementation
,
strings
1000
x17117
672A
Summer Camp
implementation
800
x15087
670B
Game of Robots
implementation
1000
x11018
670A
Holidays
brute force
,
constructive algorithms
,
greedy
,
math
900
x16530
669A
Little Artem and Presents
math
800
x10583
664A
Complicated GCD
math
,
number theory
800
x17618
660B
Seating On Bus
implementation
1000
x5251
659A
Round House
implementation
,
math
1000
x15441
658A
Bear and Reverse Radewoosh
implementation
800
x6993
653A
Bear and Three Balls
brute force
,
implementation
,
sortings
900
x8051
652B
z-sort
sortings
1000
x9911
649A
Любимые числа Поликарпа
constructive algorithms
,
implementation
1000
x1117
648B
Собери стол
constructive algorithms
,
sortings
800
x1268
648A
Наибольший подъем
constructive algorithms
,
implementation
900
x609
644A
Parliament of Berland
*special problem
,
constructive algorithms
1000
x4408
641A
Little Artem and Grasshopper
implementation
1000
x5832
637A
Voting for Photos
*special problem
,
constructive algorithms
,
implementation
1000
x5330
631A
Interview
brute force
,
implementation
900
x9167
630A
Again Twenty Five!
number theory
800
x63283
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