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Please read
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Before contest
Codeforces Round 977 (Div. 2, based on COMPFEST 16 - Final Round)
06:51:38
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→ Filter Problems
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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Status
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Custom test
Problems
#
Name
912A
Tricky Alchemy
implementation
800
x13489
910A
The Way to Home
dfs and similar
,
dp
,
greedy
,
implementation
800
x11829
908A
New Year and Counting Cards
brute force
,
implementation
800
x14801
900A
Find Extra One
geometry
,
implementation
800
x13588
899A
Splitting in Teams
constructive algorithms
,
greedy
,
math
800
x10220
898A
Rounding
implementation
,
math
800
x16117
897A
Scarborough Fair
implementation
800
x14172
894A
QAQ
brute force
,
dp
800
x34261
888A
Local Extrema
brute force
,
implementation
800
x10938
884A
Book Reading
implementation
800
x10464
873A
Chores
implementation
800
x8225
867A
Between the Offices
implementation
800
x19248
859A
Declined Finalists
greedy
,
implementation
800
x7722
855A
Tom Riddle's Diary
brute force
,
implementation
,
strings
800
x21543
854A
Fraction
brute force
,
constructive algorithms
,
math
800
x13606
851A
Arpa and a research in Mexican wave
implementation
,
math
800
x9682
837A
Text Volume
implementation
800
x9398
835A
Key races
math
800
x20180
832A
Sasha and Sticks
games
,
math
800
x20707
831B
Keyboard Layouts
implementation
,
strings
800
x14404
822A
I'm bored with life
implementation
,
math
,
number theory
800
x33021
821A
Okabe and Future Gadget Laboratory
implementation
800
x8234
818A
Diplomas and Certificates
implementation
,
math
800
x6951
811A
Vladik and Courtesy
brute force
,
implementation
800
x11876
802G
Fake News (easy)
implementation
,
strings
800
x6978
796A
Buying A House
brute force
,
implementation
800
x13011
794A
Bank Robbery
brute force
,
implementation
800
x7007
791A
Bear and Big Brother
implementation
800
x193831
785A
Anton and Polyhedrons
implementation
,
strings
800
x88582
780A
Andryusha and Socks
implementation
800
x19511
770A
New Password
*special problem
,
implementation
800
x19817
769A
Year of University Entrance
*special problem
,
implementation
,
sortings
800
x5725
764A
Taymyr is calling you
brute force
,
implementation
,
math
800
x16266
760A
Petr and a calendar
implementation
,
math
800
x8196
758A
Holiday Of Equality
implementation
,
math
800
x60694
755A
PolandBall and Hypothesis
brute force
,
graphs
,
math
,
number theory
800
x18011
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x75194
749A
Bachgold Problem
greedy
,
implementation
,
math
,
number theory
800
x49098
748A
Santa Claus and a Place in a Class
implementation
,
math
800
x8968
747A
Display Size
brute force
,
math
800
x10224
746A
Compote
implementation
,
math
800
x21359
735A
Ostap and Grasshopper
implementation
,
strings
800
x12463
734B
Anton and Digits
brute force
,
greedy
,
implementation
,
math
800
x29272
734A
Anton and Danik
implementation
,
strings
800
x151038
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x72055
731A
Night at the Museum
implementation
,
strings
800
x45603
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x77893
721A
One-dimensional Japanese Crossword
implementation
800
x18441
716A
Crazy Computer
implementation
800
x22173
712A
Memory and Crow
implementation
,
math
800
x11888
711A
Bus to Udayland
brute force
,
implementation
800
x29270
710A
King Moves
implementation
800
x13798
707A
Brain's Photos
implementation
800
x48995
705A
Hulk
implementation
800
x105947
703A
Mishka and Game
implementation
800
x56222
702A
Maximum Increase
dp
,
greedy
,
implementation
800
x44771
701A
Cards
greedy
,
implementation
800
x19582
688A
Opponents
implementation
800
x13937
686A
Free Ice Cream
constructive algorithms
,
implementation
800
x37485
681A
A Good Contest
implementation
800
x15401
680A
Bear and Five Cards
constructive algorithms
,
implementation
800
x12314
678A
Johny Likes Numbers
implementation
,
math
800
x13276
677A
Vanya and Fence
implementation
800
x140326
676A
Nicholas and Permutation
constructive algorithms
,
implementation
800
x13818
673A
Bear and Game
implementation
800
x10057
672A
Summer Camp
implementation
800
x15314
669A
Little Artem and Presents
math
800
x10795
664A
Complicated GCD
math
,
number theory
800
x18141
658A
Bear and Reverse Radewoosh
implementation
800
x7067
648B
Собери стол
constructive algorithms
,
sortings
800
x1441
630A
Again Twenty Five!
number theory
800
x67425
629A
Far Relative’s Birthday Cake
brute force
,
combinatorics
,
constructive algorithms
,
implementation
800
x13378
624A
Save Luke
math
800
x10257
620A
Professor GukiZ's Robot
implementation
,
math
800
x13099
618A
Slime Combining
implementation
800
x8334
617A
Elephant
math
800
x184546
615A
Bulbs
implementation
800
x17292
609A
USB Flash Drives
greedy
,
implementation
,
sortings
800
x17228
599A
Patrick and Shopping
implementation
800
x28625
595A
Vitaly and Night
constructive algorithms
,
implementation
800
x14521
581A
Vasya the Hipster
implementation
,
math
800
x70817
551A
GukiZ and Contest
brute force
,
implementation
,
sortings
800
x16285
546A
Soldier and Bananas
brute force
,
implementation
,
math
800
x180523
540A
Combination Lock
implementation
800
x32421
520A
Pangram
implementation
,
strings
800
x96911
513A
Game
constructive algorithms
,
math
800
x20211
510A
Fox And Snake
implementation
800
x83313
509A
Maximum in Table
brute force
,
implementation
800
x38223
492A
Vanya and Cubes
implementation
800
x50084
490A
Team Olympiad
greedy
,
implementation
,
sortings
800
x59151
486A
Calculating Function
implementation
,
math
800
x117702
472A
Design Tutorial: Learn from Math
math
,
number theory
800
x59733
469A
I Wanna Be the Guy
greedy
,
implementation
800
x97295
467A
George and Accommodation
implementation
800
x121597
454A
Little Pony and Crystal Mine
implementation
800
x14820
448A
Rewards
implementation
800
x24208
447A
DZY Loves Hash
implementation
800
x9582
443A
Anton and Letters
constructive algorithms
,
implementation
800
x89385
440A
Forgotten Episode
implementation
800
x7340
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x59482
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