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Codeforces Round 987 (Div. 2)
14:30:35
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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
#
Name
766A
Mahmoud and Longest Uncommon Subsequence
constructive algorithms
,
strings
1000
x30669
765A
Neverending competitions
implementation
,
math
900
x9027
764B
Timofey and cubes
constructive algorithms
,
implementation
900
x11888
764A
Taymyr is calling you
brute force
,
implementation
,
math
800
x16363
761A
Dasha and Stairs
brute force
,
constructive algorithms
,
implementation
,
math
1000
x14539
760A
Petr and a calendar
implementation
,
math
800
x8214
758A
Holiday Of Equality
implementation
,
math
800
x61606
757A
Gotta Catch Em' All!
implementation
1000
x11272
755A
PolandBall and Hypothesis
brute force
,
graphs
,
math
,
number theory
800
x18132
753A
Santa Claus and Candies
dp
,
greedy
,
math
1000
x9093
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x76408
749A
Bachgold Problem
greedy
,
implementation
,
math
,
number theory
800
x49845
748A
Santa Claus and a Place in a Class
implementation
,
math
800
x9013
747B
Mammoth's Genome Decoding
implementation
,
strings
900
x8908
747A
Display Size
brute force
,
math
800
x10280
746B
Decoding
implementation
,
strings
900
x28226
746A
Compote
implementation
,
math
800
x21559
745A
Hongcow Learns the Cyclic Shift
implementation
,
strings
900
x10478
742A
Arpa’s hard exam and Mehrdad’s naive cheat
implementation
,
math
,
number theory
1000
x43007
735A
Ostap and Grasshopper
implementation
,
strings
800
x12514
734B
Anton and Digits
brute force
,
greedy
,
implementation
,
math
800
x29460
734A
Anton and Danik
implementation
,
strings
800
x154222
733A
Grasshopper And the String
implementation
1000
x16175
732B
Cormen --- The Best Friend Of a Man
dp
,
greedy
1000
x24606
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x73156
731A
Night at the Museum
implementation
,
strings
800
x46177
729A
Interview with Oleg
implementation
,
strings
900
x7492
727A
Transformation: from A to B
brute force
,
dfs and similar
,
math
1000
x14024
725A
Jumping Ball
implementation
1000
x7092
724A
Checking the Calendar
implementation
1000
x7101
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x79504
721A
One-dimensional Japanese Crossword
implementation
800
x18605
716A
Crazy Computer
implementation
800
x22349
712A
Memory and Crow
implementation
,
math
800
x11908
711A
Bus to Udayland
brute force
,
implementation
800
x29537
710A
King Moves
implementation
800
x13849
709A
Juicer
implementation
900
x32554
707A
Brain's Photos
implementation
800
x49542
706A
Beru-taxi
brute force
,
geometry
,
implementation
900
x14520
705A
Hulk
implementation
800
x107975
703A
Mishka and Game
implementation
800
x57137
702A
Maximum Increase
dp
,
greedy
,
implementation
800
x45451
701A
Cards
greedy
,
implementation
800
x19676
699A
Launch of Collider
implementation
1000
x16012
697A
Pineapple Incident
implementation
,
math
900
x12813
691A
Fashion in Berland
implementation
1000
x10226
688B
Lovely Palindromes
constructive algorithms
,
math
1000
x32380
688A
Opponents
implementation
800
x13981
686A
Free Ice Cream
constructive algorithms
,
implementation
800
x37828
681A
A Good Contest
implementation
800
x15546
680B
Bear and Finding Criminals
constructive algorithms
,
implementation
1000
x24439
680A
Bear and Five Cards
constructive algorithms
,
implementation
800
x12352
678A
Johny Likes Numbers
implementation
,
math
800
x13355
677A
Vanya and Fence
implementation
800
x143387
676A
Nicholas and Permutation
constructive algorithms
,
implementation
800
x13846
673A
Bear and Game
implementation
800
x10077
672B
Different is Good
constructive algorithms
,
implementation
,
strings
1000
x17424
672A
Summer Camp
implementation
800
x15373
670B
Game of Robots
implementation
1000
x11274
670A
Holidays
brute force
,
constructive algorithms
,
greedy
,
math
900
x17060
669A
Little Artem and Presents
math
800
x10857
664A
Complicated GCD
math
,
number theory
800
x18379
660B
Seating On Bus
implementation
1000
x5378
659A
Round House
implementation
,
math
1000
x15865
658A
Bear and Reverse Radewoosh
implementation
800
x7086
653A
Bear and Three Balls
brute force
,
implementation
,
sortings
900
x8248
652B
z-sort
sortings
1000
x10335
649A
Любимые числа Поликарпа
constructive algorithms
,
implementation
1000
x1296
648B
Собери стол
constructive algorithms
,
sortings
800
x1485
648A
Наибольший подъем
constructive algorithms
,
implementation
900
x704
644A
Parliament of Berland
*special problem
,
constructive algorithms
1000
x4458
641A
Little Artem and Grasshopper
implementation
1000
x5937
637A
Voting for Photos
*special problem
,
constructive algorithms
,
implementation
1000
x5417
631A
Interview
brute force
,
implementation
900
x9334
630A
Again Twenty Five!
number theory
800
x69430
629A
Far Relative’s Birthday Cake
brute force
,
combinatorics
,
constructive algorithms
,
implementation
800
x13460
628A
Tennis Tournament
implementation
,
math
1000
x6407
626A
Robot Sequence
brute force
,
implementation
1000
x6266
624A
Save Luke
math
800
x10361
622B
The Time
implementation
900
x9665
622A
Infinite Sequence
implementation
,
math
1000
x9411
621A
Wet Shark and Odd and Even
implementation
900
x20675
620B
Grandfather Dovlet’s calculator
implementation
1000
x9633
620A
Professor GukiZ's Robot
implementation
,
math
800
x13265
618A
Slime Combining
implementation
800
x8352
617A
Elephant
math
800
x189050
616B
Dinner with Emma
games
,
greedy
1000
x11983
616A
Comparing Two Long Integers
implementation
,
strings
900
x9937
615A
Bulbs
implementation
800
x17472
611A
New Year and Days
implementation
900
x11660
610A
Pasha and Stick
combinatorics
,
math
1000
x23477
609A
USB Flash Drives
greedy
,
implementation
,
sortings
800
x17402
608A
Saitama Destroys Hotel
implementation
,
math
1000
x9370
604A
Uncowed Forces
implementation
1000
x8999
599A
Patrick and Shopping
implementation
800
x29176
598A
Tricky Sum
math
900
x26784
595A
Vitaly and Night
constructive algorithms
,
implementation
800
x14551
591A
Wizards' Duel
implementation
,
math
900
x14575
588A
Duff and Meat
greedy
900
x22964
586A
Alena's Schedule
implementation
900
x10147
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