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Codeforces Round 968 (Div. 2)
30:10:23
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combine-tags-by-or
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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
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Status
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Custom test
Problems
#
Name
859A
Declined Finalists
greedy
,
implementation
800
x7682
855A
Tom Riddle's Diary
brute force
,
implementation
,
strings
800
x20936
854A
Fraction
brute force
,
constructive algorithms
,
math
800
x13551
851A
Arpa and a research in Mexican wave
implementation
,
math
800
x9639
847G
University Classes
implementation
900
x6641
841A
Generous Kefa
brute force
,
implementation
900
x13091
839A
Arya and Bran
implementation
900
x14096
837A
Text Volume
implementation
800
x9342
835A
Key races
math
800
x20100
834A
The Useless Toy
implementation
900
x8599
832A
Sasha and Sticks
games
,
math
800
x20613
831B
Keyboard Layouts
implementation
,
strings
800
x14239
822A
I'm bored with life
implementation
,
math
,
number theory
800
x32671
821A
Okabe and Future Gadget Laboratory
implementation
800
x8172
820A
Mister B and Book Reading
implementation
900
x8102
818A
Diplomas and Certificates
implementation
,
math
800
x6866
814A
An abandoned sentiment from past
constructive algorithms
,
greedy
,
implementation
,
sortings
900
x10355
811A
Vladik and Courtesy
brute force
,
implementation
800
x11841
810A
Straight <<A>>
implementation
,
math
900
x8786
808A
Lucky Year
implementation
900
x9234
807A
Is it rated?
implementation
,
sortings
900
x20316
802G
Fake News (easy)
implementation
,
strings
800
x6889
801B
Valued Keys
constructive algorithms
,
greedy
,
strings
900
x10182
796A
Buying A House
brute force
,
implementation
800
x12958
794A
Bank Robbery
brute force
,
implementation
800
x6981
793A
Oleg and shares
implementation
,
math
900
x6721
791A
Bear and Big Brother
implementation
800
x189330
785A
Anton and Polyhedrons
implementation
,
strings
800
x86835
780A
Andryusha and Socks
implementation
800
x19280
776A
A Serial Killer
brute force
,
implementation
,
strings
900
x11991
770A
New Password
*special problem
,
implementation
800
x19557
769A
Year of University Entrance
*special problem
,
implementation
,
sortings
800
x5681
768A
Oath of the Night's Watch
constructive algorithms
,
sortings
900
x27104
765A
Neverending competitions
implementation
,
math
900
x8958
764B
Timofey and cubes
constructive algorithms
,
implementation
900
x11773
764A
Taymyr is calling you
brute force
,
implementation
,
math
800
x16201
760A
Petr and a calendar
implementation
,
math
800
x7856
758A
Holiday Of Equality
implementation
,
math
800
x59724
755A
PolandBall and Hypothesis
brute force
,
graphs
,
math
,
number theory
800
x17876
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x74042
749A
Bachgold Problem
greedy
,
implementation
,
math
,
number theory
800
x48497
748A
Santa Claus and a Place in a Class
implementation
,
math
800
x8752
747B
Mammoth's Genome Decoding
implementation
,
strings
900
x8743
747A
Display Size
brute force
,
math
800
x10151
746B
Decoding
implementation
,
strings
900
x27393
746A
Compote
implementation
,
math
800
x21197
745A
Hongcow Learns the Cyclic Shift
implementation
,
strings
900
x10380
735A
Ostap and Grasshopper
implementation
,
strings
800
x12406
734B
Anton and Digits
brute force
,
greedy
,
implementation
,
math
800
x29085
734A
Anton and Danik
implementation
,
strings
800
x147903
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x70806
731A
Night at the Museum
implementation
,
strings
800
x44973
729A
Interview with Oleg
implementation
,
strings
900
x7374
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x75869
721A
One-dimensional Japanese Crossword
implementation
800
x18332
716A
Crazy Computer
implementation
800
x22020
712A
Memory and Crow
implementation
,
math
800
x11864
711A
Bus to Udayland
brute force
,
implementation
800
x29163
710A
King Moves
implementation
800
x13732
709A
Juicer
implementation
900
x31480
707A
Brain's Photos
implementation
800
x48339
706A
Beru-taxi
brute force
,
geometry
,
implementation
900
x14417
705A
Hulk
implementation
800
x103876
703A
Mishka and Game
implementation
800
x55529
702A
Maximum Increase
dp
,
greedy
,
implementation
800
x44019
701A
Cards
greedy
,
implementation
800
x19409
697A
Pineapple Incident
implementation
,
math
900
x12696
688A
Opponents
implementation
800
x13886
686A
Free Ice Cream
constructive algorithms
,
implementation
800
x36953
681A
A Good Contest
implementation
800
x15323
680A
Bear and Five Cards
constructive algorithms
,
implementation
800
x12282
678A
Johny Likes Numbers
implementation
,
math
800
x12781
677A
Vanya and Fence
implementation
800
x137596
676A
Nicholas and Permutation
constructive algorithms
,
implementation
800
x13772
673A
Bear and Game
implementation
800
x10020
672A
Summer Camp
implementation
800
x15213
670A
Holidays
brute force
,
constructive algorithms
,
greedy
,
math
900
x16804
669A
Little Artem and Presents
math
800
x10703
664A
Complicated GCD
math
,
number theory
800
x17981
658A
Bear and Reverse Radewoosh
implementation
800
x7042
653A
Bear and Three Balls
brute force
,
implementation
,
sortings
900
x8168
648B
Собери стол
constructive algorithms
,
sortings
800
x1390
648A
Наибольший подъем
constructive algorithms
,
implementation
900
x648
631A
Interview
brute force
,
implementation
900
x9229
630A
Again Twenty Five!
number theory
800
x65515
629A
Far Relative’s Birthday Cake
brute force
,
combinatorics
,
constructive algorithms
,
implementation
800
x13318
624A
Save Luke
math
800
x10226
622B
The Time
implementation
900
x9271
621A
Wet Shark and Odd and Even
implementation
900
x20105
620A
Professor GukiZ's Robot
implementation
,
math
800
x13032
618A
Slime Combining
implementation
800
x8317
617A
Elephant
math
800
x179534
616A
Comparing Two Long Integers
implementation
,
strings
900
x9739
615A
Bulbs
implementation
800
x17106
611A
New Year and Days
implementation
900
x11623
609A
USB Flash Drives
greedy
,
implementation
,
sortings
800
x17093
599A
Patrick and Shopping
implementation
800
x28412
598A
Tricky Sum
math
900
x25785
595A
Vitaly and Night
constructive algorithms
,
implementation
800
x14479
591A
Wizards' Duel
implementation
,
math
900
x14120
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