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Refact.ai Match 1 (Codeforces Round 985)
4 days
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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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Custom test
Problems
#
Name
761A
Dasha and Stairs
brute force
,
constructive algorithms
,
implementation
,
math
1000
x14533
760A
Petr and a calendar
implementation
,
math
800
x8212
758A
Holiday Of Equality
implementation
,
math
800
x61396
757A
Gotta Catch Em' All!
implementation
1000
x11269
755A
PolandBall and Hypothesis
brute force
,
graphs
,
math
,
number theory
800
x18119
753A
Santa Claus and Candies
dp
,
greedy
,
math
1000
x9080
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x76092
749A
Bachgold Problem
greedy
,
implementation
,
math
,
number theory
800
x49723
748A
Santa Claus and a Place in a Class
implementation
,
math
800
x9001
747B
Mammoth's Genome Decoding
implementation
,
strings
900
x8878
747A
Display Size
brute force
,
math
800
x10249
746B
Decoding
implementation
,
strings
900
x28172
746A
Compote
implementation
,
math
800
x21546
745A
Hongcow Learns the Cyclic Shift
implementation
,
strings
900
x10475
742A
Arpa’s hard exam and Mehrdad’s naive cheat
implementation
,
math
,
number theory
1000
x42838
735A
Ostap and Grasshopper
implementation
,
strings
800
x12509
734B
Anton and Digits
brute force
,
greedy
,
implementation
,
math
800
x29431
734A
Anton and Danik
implementation
,
strings
800
x153550
733A
Grasshopper And the String
implementation
1000
x16170
732B
Cormen --- The Best Friend Of a Man
dp
,
greedy
1000
x24589
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x72918
731A
Night at the Museum
implementation
,
strings
800
x46023
729A
Interview with Oleg
implementation
,
strings
900
x7483
727A
Transformation: from A to B
brute force
,
dfs and similar
,
math
1000
x13971
725A
Jumping Ball
implementation
1000
x7089
724A
Checking the Calendar
implementation
1000
x7100
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x79165
721A
One-dimensional Japanese Crossword
implementation
800
x18493
716A
Crazy Computer
implementation
800
x22321
712A
Memory and Crow
implementation
,
math
800
x11907
711A
Bus to Udayland
brute force
,
implementation
800
x29366
710A
King Moves
implementation
800
x13838
709A
Juicer
implementation
900
x32340
707A
Brain's Photos
implementation
800
x49422
706A
Beru-taxi
brute force
,
geometry
,
implementation
900
x14510
705A
Hulk
implementation
800
x107515
703A
Mishka and Game
implementation
800
x56801
702A
Maximum Increase
dp
,
greedy
,
implementation
800
x45290
701A
Cards
greedy
,
implementation
800
x19658
699A
Launch of Collider
implementation
1000
x16004
697A
Pineapple Incident
implementation
,
math
900
x12804
691A
Fashion in Berland
implementation
1000
x10191
688B
Lovely Palindromes
constructive algorithms
,
math
1000
x32310
688A
Opponents
implementation
800
x13977
686A
Free Ice Cream
constructive algorithms
,
implementation
800
x37749
681A
A Good Contest
implementation
800
x15520
680B
Bear and Finding Criminals
constructive algorithms
,
implementation
1000
x24404
680A
Bear and Five Cards
constructive algorithms
,
implementation
800
x12339
678A
Johny Likes Numbers
implementation
,
math
800
x13325
677A
Vanya and Fence
implementation
800
x142666
676A
Nicholas and Permutation
constructive algorithms
,
implementation
800
x13842
673A
Bear and Game
implementation
800
x10074
672B
Different is Good
constructive algorithms
,
implementation
,
strings
1000
x17412
672A
Summer Camp
implementation
800
x15349
670B
Game of Robots
implementation
1000
x11266
670A
Holidays
brute force
,
constructive algorithms
,
greedy
,
math
900
x17036
669A
Little Artem and Presents
math
800
x10849
664A
Complicated GCD
math
,
number theory
800
x18361
660B
Seating On Bus
implementation
1000
x5372
659A
Round House
implementation
,
math
1000
x15846
658A
Bear and Reverse Radewoosh
implementation
800
x7082
653A
Bear and Three Balls
brute force
,
implementation
,
sortings
900
x8232
652B
z-sort
sortings
1000
x10325
649A
Любимые числа Поликарпа
constructive algorithms
,
implementation
1000
x1291
648B
Собери стол
constructive algorithms
,
sortings
800
x1477
648A
Наибольший подъем
constructive algorithms
,
implementation
900
x686
644A
Parliament of Berland
*special problem
,
constructive algorithms
1000
x4458
641A
Little Artem and Grasshopper
implementation
1000
x5929
637A
Voting for Photos
*special problem
,
constructive algorithms
,
implementation
1000
x5417
631A
Interview
brute force
,
implementation
900
x9332
630A
Again Twenty Five!
number theory
800
x69117
629A
Far Relative’s Birthday Cake
brute force
,
combinatorics
,
constructive algorithms
,
implementation
800
x13435
628A
Tennis Tournament
implementation
,
math
1000
x6397
626A
Robot Sequence
brute force
,
implementation
1000
x6257
624A
Save Luke
math
800
x10357
622B
The Time
implementation
900
x9645
622A
Infinite Sequence
implementation
,
math
1000
x9389
621A
Wet Shark and Odd and Even
implementation
900
x20638
620B
Grandfather Dovlet’s calculator
implementation
1000
x9612
620A
Professor GukiZ's Robot
implementation
,
math
800
x13242
618A
Slime Combining
implementation
800
x8349
617A
Elephant
math
800
x188072
616B
Dinner with Emma
games
,
greedy
1000
x11962
616A
Comparing Two Long Integers
implementation
,
strings
900
x9914
615A
Bulbs
implementation
800
x17457
611A
New Year and Days
implementation
900
x11657
610A
Pasha and Stick
combinatorics
,
math
1000
x23411
609A
USB Flash Drives
greedy
,
implementation
,
sortings
800
x17367
608A
Saitama Destroys Hotel
implementation
,
math
1000
x9361
604A
Uncowed Forces
implementation
1000
x8996
599A
Patrick and Shopping
implementation
800
x28793
598A
Tricky Sum
math
900
x26711
595A
Vitaly and Night
constructive algorithms
,
implementation
800
x14545
591A
Wizards' Duel
implementation
,
math
900
x14547
588A
Duff and Meat
greedy
900
x22953
586A
Alena's Schedule
implementation
900
x10137
584A
Olesya and Rodion
math
1000
x45475
583A
Asphalting Roads
implementation
1000
x11445
581A
Vasya the Hipster
implementation
,
math
800
x71656
580A
Kefa and First Steps
brute force
,
dp
,
implementation
900
x88753
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