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Codeforces Round 1134 (Div. 4)
2 days
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combine-tags-by-or
*combine tags by OR
2-sat
binary search
bitmasks
brute force
chinese remainder theorem
combinatorics
communication
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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Custom test
Problems
#
Name
807A
Is it rated?
implementation
,
sortings
900
x23977
805B
3-palindrome
constructive algorithms
1000
x19192
805A
Fake NP
greedy
,
math
1000
x19593
804A
Find Amir
constructive algorithms
,
greedy
,
math
1000
x16695
802G1
Fake News (easy)
implementation
,
strings
800
x8370
801B
Valued Keys
constructive algorithms
,
greedy
,
strings
900
x11385
798A
Mike and palindrome
brute force
,
constructive algorithms
,
strings
1000
x24517
796A
Buying A House
brute force
,
implementation
800
x13970
794A
Bank Robbery
brute force
,
implementation
800
x8103
793A
Oleg and shares
implementation
,
math
900
x8306
791A
Bear and Big Brother
implementation
800
x278838
785A
Anton and Polyhedrons
implementation
,
strings
800
x117233
780A
Andryusha and Socks
implementation
800
x23629
779A
Pupils Redistribution
constructive algorithms
,
math
1000
x9813
777A
Shell Game
constructive algorithms
,
implementation
,
math
1000
x11195
776A
A Serial Killer
brute force
,
implementation
,
strings
900
x13018
770A
New Password
*special problem
,
implementation
800
x22146
769A
Year of University Entrance
*special problem
,
implementation
,
sortings
800
x6552
768A
Oath of the Night's Watch
constructive algorithms
,
sortings
900
x31571
766B
Mahmoud and a Triangle
constructive algorithms
,
geometry
,
greedy
,
math
,
number theory
,
sortings
1000
x39595
766A
Mahmoud and Longest Uncommon Subsequence
constructive algorithms
,
strings
1000
x35522
765A
Neverending competitions
implementation
,
math
900
x9669
764B
Timofey and cubes
constructive algorithms
,
implementation
900
x12831
764A
Taymyr is calling you
brute force
,
implementation
,
math
800
x17304
761A
Dasha and Stairs
brute force
,
constructive algorithms
,
implementation
,
math
1000
x15300
760A
Petr and a calendar
implementation
,
math
800
x8740
758A
Holiday Of Equality
implementation
,
math
800
x78777
757A
Gotta Catch Em' All!
implementation
1000
x11952
755A
PolandBall and Hypothesis
brute force
,
graphs
,
math
,
number theory
800
x20471
753A
Santa Claus and Candies
dp
,
greedy
,
math
1000
x10235
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x98068
749A
Bachgold Problem
greedy
,
implementation
,
math
,
number theory
800
x59134
748A
Santa Claus and a Place in a Class
implementation
,
math
800
x9419
747B
Mammoth's Genome Decoding
implementation
,
strings
900
x9800
747A
Display Size
brute force
,
math
800
x11428
746B
Decoding
implementation
,
strings
900
x32712
746A
Compote
implementation
,
math
800
x24304
745A
Hongcow Learns the Cyclic Shift
implementation
,
strings
900
x11109
742A
Arpa’s hard exam and Mehrdad’s naive cheat
implementation
,
math
,
number theory
1000
x54993
735A
Ostap and Grasshopper
implementation
,
strings
800
x13303
734B
Anton and Digits
brute force
,
greedy
,
implementation
,
math
800
x32585
734A
Anton and Danik
implementation
,
strings
800
x210165
733A
Grasshopper And the String
implementation
1000
x17155
732B
Cormen --- The Best Friend Of a Man
dp
,
greedy
1000
x26114
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x94156
731A
Night at the Museum
implementation
,
strings
800
x55098
729A
Interview with Oleg
implementation
,
strings
900
x8253
727A
Transformation: from A to B
brute force
,
dfs and similar
,
math
1000
x19311
725A
Jumping Ball
implementation
1000
x7593
724A
Checking the Calendar
implementation
1000
x7639
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x107175
721A
One-dimensional Japanese Crossword
implementation
800
x19564
716A
Crazy Computer
implementation
800
x24367
712A
Memory and Crow
implementation
,
math
800
x12803
711A
Bus to Udayland
brute force
,
implementation
800
x31296
710A
King Moves
implementation
800
x15093
709A
Juicer
implementation
900
x39292
707A
Brain's Photos
implementation
800
x57391
706A
Beru-taxi
brute force
,
geometry
,
implementation
900
x15547
705A
Hulk
implementation
800
x140177
703A
Mishka and Game
implementation
800
x69673
702A
Maximum Increase
dp
,
greedy
,
implementation
800
x58235
701A
Cards
greedy
,
implementation
800
x21497
699A
Launch of Collider
implementation
1000
x19949
697A
Pineapple Incident
implementation
,
math
900
x13532
691A
Fashion in Berland
implementation
1000
x11462
688B
Lovely Palindromes
constructive algorithms
,
math
1000
x36762
688A
Opponents
implementation
800
x14975
686A
Free Ice Cream
constructive algorithms
,
implementation
800
x45050
681A
A Good Contest
implementation
800
x17046
680B
Bear and Finding Criminals
constructive algorithms
,
implementation
1000
x26627
680A
Bear and Five Cards
constructive algorithms
,
implementation
800
x13522
678A
Johny Likes Numbers
implementation
,
math
800
x15716
677A
Vanya and Fence
implementation
800
x193561
676A
Nicholas and Permutation
constructive algorithms
,
implementation
800
x14980
673A
Bear and Game
implementation
800
x11019
672B
Different is Good
constructive algorithms
,
implementation
,
strings
1000
x18933
672A
Summer Camp
implementation
800
x16875
670B
Game of Robots
implementation
1000
x12273
670A
Holidays
brute force
,
constructive algorithms
,
greedy
,
math
900
x19066
669A
Little Artem and Presents
math
800
x11869
664A
Complicated GCD
math
,
number theory
800
x22845
660B
Seating On Bus
implementation
1000
x5966
659A
Round House
implementation
,
math
1000
x17253
658A
Bear and Reverse Radewoosh
implementation
800
x7839
653A
Bear and Three Balls
brute force
,
implementation
,
sortings
900
x9448
652B
z-sort
sortings
1000
x12264
649A
Любимые числа Поликарпа
constructive algorithms
,
implementation
1000
x1761
648B
Собери стол
constructive algorithms
,
sortings
800
x2266
648A
Наибольший подъем
constructive algorithms
,
implementation
900
x1225
644A
Parliament of Berland
*special problem
,
constructive algorithms
1000
x4711
641A
Little Artem and Grasshopper
implementation
1000
x6417
637A
Voting for Photos
*special problem
,
constructive algorithms
,
implementation
1000
x5944
631A
Interview
brute force
,
implementation
900
x9834
630A
Again Twenty Five!
number theory
800
x101594
629A
Far Relative’s Birthday Cake
brute force
,
combinatorics
,
constructive algorithms
,
implementation
800
x15161
628A
Tennis Tournament
implementation
,
math
1000
x7246
626A
Robot Sequence
brute force
,
implementation
1000
x7007
624A
Save Luke
math
800
x11295
622B
The Time
implementation
900
x11214
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