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Codeforces Round 973 (Div. 2)
16:12:56
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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
#
Name
898A
Rounding
implementation
,
math
800
x16024
897A
Scarborough Fair
implementation
800
x14145
894A
QAQ
brute force
,
dp
800
x34098
888A
Local Extrema
brute force
,
implementation
800
x10909
884A
Book Reading
implementation
800
x10442
873A
Chores
implementation
800
x8190
867A
Between the Offices
implementation
800
x19206
859A
Declined Finalists
greedy
,
implementation
800
x7699
855A
Tom Riddle's Diary
brute force
,
implementation
,
strings
800
x21437
854A
Fraction
brute force
,
constructive algorithms
,
math
800
x13586
851A
Arpa and a research in Mexican wave
implementation
,
math
800
x9667
837A
Text Volume
implementation
800
x9374
835A
Key races
math
800
x20127
832A
Sasha and Sticks
games
,
math
800
x20662
831B
Keyboard Layouts
implementation
,
strings
800
x14350
822A
I'm bored with life
implementation
,
math
,
number theory
800
x32878
821A
Okabe and Future Gadget Laboratory
implementation
800
x8228
818A
Diplomas and Certificates
implementation
,
math
800
x6932
811A
Vladik and Courtesy
brute force
,
implementation
800
x11856
802G
Fake News (easy)
implementation
,
strings
800
x6934
796A
Buying A House
brute force
,
implementation
800
x12994
794A
Bank Robbery
brute force
,
implementation
800
x6996
791A
Bear and Big Brother
implementation
800
x192059
785A
Anton and Polyhedrons
implementation
,
strings
800
x87941
780A
Andryusha and Socks
implementation
800
x19419
770A
New Password
*special problem
,
implementation
800
x19726
769A
Year of University Entrance
*special problem
,
implementation
,
sortings
800
x5701
764A
Taymyr is calling you
brute force
,
implementation
,
math
800
x16240
760A
Petr and a calendar
implementation
,
math
800
x8182
758A
Holiday Of Equality
implementation
,
math
800
x60394
755A
PolandBall and Hypothesis
brute force
,
graphs
,
math
,
number theory
800
x17960
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x74765
749A
Bachgold Problem
greedy
,
implementation
,
math
,
number theory
800
x48870
748A
Santa Claus and a Place in a Class
implementation
,
math
800
x8953
747A
Display Size
brute force
,
math
800
x10206
746A
Compote
implementation
,
math
800
x21299
735A
Ostap and Grasshopper
implementation
,
strings
800
x12440
734B
Anton and Digits
brute force
,
greedy
,
implementation
,
math
800
x29172
734A
Anton and Danik
implementation
,
strings
800
x149841
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x71600
731A
Night at the Museum
implementation
,
strings
800
x45391
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x77107
721A
One-dimensional Japanese Crossword
implementation
800
x18367
716A
Crazy Computer
implementation
800
x22123
712A
Memory and Crow
implementation
,
math
800
x11876
711A
Bus to Udayland
brute force
,
implementation
800
x29223
710A
King Moves
implementation
800
x13764
707A
Brain's Photos
implementation
800
x48782
705A
Hulk
implementation
800
x105250
703A
Mishka and Game
implementation
800
x55988
702A
Maximum Increase
dp
,
greedy
,
implementation
800
x44508
701A
Cards
greedy
,
implementation
800
x19465
688A
Opponents
implementation
800
x13920
686A
Free Ice Cream
constructive algorithms
,
implementation
800
x37309
681A
A Good Contest
implementation
800
x15373
680A
Bear and Five Cards
constructive algorithms
,
implementation
800
x12301
678A
Johny Likes Numbers
implementation
,
math
800
x13238
677A
Vanya and Fence
implementation
800
x139243
676A
Nicholas and Permutation
constructive algorithms
,
implementation
800
x13801
673A
Bear and Game
implementation
800
x10041
672A
Summer Camp
implementation
800
x15285
669A
Little Artem and Presents
math
800
x10759
664A
Complicated GCD
math
,
number theory
800
x18081
658A
Bear and Reverse Radewoosh
implementation
800
x7057
648B
Собери стол
constructive algorithms
,
sortings
800
x1416
630A
Again Twenty Five!
number theory
800
x66518
629A
Far Relative’s Birthday Cake
brute force
,
combinatorics
,
constructive algorithms
,
implementation
800
x13345
624A
Save Luke
math
800
x10241
620A
Professor GukiZ's Robot
implementation
,
math
800
x13071
618A
Slime Combining
implementation
800
x8324
617A
Elephant
math
800
x182723
615A
Bulbs
implementation
800
x17217
609A
USB Flash Drives
greedy
,
implementation
,
sortings
800
x17192
599A
Patrick and Shopping
implementation
800
x28539
595A
Vitaly and Night
constructive algorithms
,
implementation
800
x14509
581A
Vasya the Hipster
implementation
,
math
800
x70428
551A
GukiZ and Contest
brute force
,
implementation
,
sortings
800
x16260
546A
Soldier and Bananas
brute force
,
implementation
,
math
800
x179041
540A
Combination Lock
implementation
800
x32358
520A
Pangram
implementation
,
strings
800
x96221
513A
Game
constructive algorithms
,
math
800
x20138
510A
Fox And Snake
implementation
800
x82695
509A
Maximum in Table
brute force
,
implementation
800
x38119
492A
Vanya and Cubes
implementation
800
x49769
490A
Team Olympiad
greedy
,
implementation
,
sortings
800
x58817
486A
Calculating Function
implementation
,
math
800
x116775
472A
Design Tutorial: Learn from Math
math
,
number theory
800
x59464
469A
I Wanna Be the Guy
greedy
,
implementation
800
x96712
467A
George and Accommodation
implementation
800
x120763
454A
Little Pony and Crystal Mine
implementation
800
x14782
448A
Rewards
implementation
800
x24173
447A
DZY Loves Hash
implementation
800
x9565
443A
Anton and Letters
constructive algorithms
,
implementation
800
x88858
440A
Forgotten Episode
implementation
800
x7308
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x59193
431A
Black Square
implementation
800
x54397
427A
Police Recruits
implementation
800
x77162
426A
Sereja and Mugs
implementation
800
x9156
421A
Pasha and Hamsters
constructive algorithms
,
implementation
800
x6010
411A
Password Check
*special problem
,
implementation
800
x7202
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