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Before contest
Codeforces Round 955 (Div. 2, with prizes from NEAR!)
08:51:49
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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
Submit
Status
Standings
Custom test
Problems
#
Name
831A
Unimodal Array
implementation
1000
x10070
822B
Crossword solving
brute force
,
implementation
,
strings
1000
x9377
822A
I'm bored with life
implementation
,
math
,
number theory
800
x32029
821A
Okabe and Future Gadget Laboratory
implementation
800
x7948
820A
Mister B and Book Reading
implementation
900
x8062
818A
Diplomas and Certificates
implementation
,
math
800
x6812
816A
Karen and Morning
brute force
,
implementation
1000
x8954
814A
An abandoned sentiment from past
constructive algorithms
,
greedy
,
implementation
,
sortings
900
x10301
811A
Vladik and Courtesy
brute force
,
implementation
800
x11813
810A
Straight <<A>>
implementation
,
math
900
x8748
808A
Lucky Year
implementation
900
x9137
807A
Is it rated?
implementation
,
sortings
900
x19817
805B
3-palindrome
constructive algorithms
1000
x16411
805A
Fake NP
greedy
,
math
1000
x17703
804A
Find Amir
constructive algorithms
,
greedy
,
math
1000
x15284
802G
Fake News (easy)
implementation
,
strings
800
x6787
801B
Valued Keys
constructive algorithms
,
greedy
,
strings
900
x10090
798A
Mike and palindrome
brute force
,
constructive algorithms
,
strings
1000
x21178
796A
Buying A House
brute force
,
implementation
800
x12883
794A
Bank Robbery
brute force
,
implementation
800
x6941
793A
Oleg and shares
implementation
,
math
900
x6636
791A
Bear and Big Brother
implementation
800
x183151
785A
Anton and Polyhedrons
implementation
,
strings
800
x84216
780A
Andryusha and Socks
implementation
800
x18859
779A
Pupils Redistribution
constructive algorithms
,
math
1000
x9259
777A
Shell Game
constructive algorithms
,
implementation
,
math
1000
x10070
776A
A Serial Killer
brute force
,
implementation
,
strings
900
x11897
770A
New Password
*special problem
,
implementation
800
x19064
769A
Year of University Entrance
*special problem
,
implementation
,
sortings
800
x5610
768A
Oath of the Night's Watch
constructive algorithms
,
sortings
900
x26537
766B
Mahmoud and a Triangle
constructive algorithms
,
geometry
,
greedy
,
math
,
number theory
,
sortings
1000
x31610
766A
Mahmoud and Longest Uncommon Subsequence
constructive algorithms
,
strings
1000
x29359
765A
Neverending competitions
implementation
,
math
900
x8907
764B
Timofey and cubes
constructive algorithms
,
implementation
900
x11682
764A
Taymyr is calling you
brute force
,
implementation
,
math
800
x16088
761A
Dasha and Stairs
brute force
,
constructive algorithms
,
implementation
,
math
1000
x14373
760A
Petr and a calendar
implementation
,
math
800
x7757
758A
Holiday Of Equality
implementation
,
math
800
x58393
757A
Gotta Catch Em' All!
implementation
1000
x11130
755A
PolandBall and Hypothesis
brute force
,
graphs
,
math
,
number theory
800
x17650
753A
Santa Claus and Candies
dp
,
greedy
,
math
1000
x8843
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x72278
749A
Bachgold Problem
greedy
,
implementation
,
math
,
number theory
800
x47357
748A
Santa Claus and a Place in a Class
implementation
,
math
800
x8667
747B
Mammoth's Genome Decoding
implementation
,
strings
900
x8621
747A
Display Size
brute force
,
math
800
x10069
746B
Decoding
implementation
,
strings
900
x26672
746A
Compote
implementation
,
math
800
x21017
745A
Hongcow Learns the Cyclic Shift
implementation
,
strings
900
x10339
742A
Arpa’s hard exam and Mehrdad’s naive cheat
implementation
,
math
,
number theory
1000
x40660
735A
Ostap and Grasshopper
implementation
,
strings
800
x12346
734B
Anton and Digits
brute force
,
greedy
,
implementation
,
math
800
x28725
734A
Anton and Danik
implementation
,
strings
800
x143529
733A
Grasshopper And the String
implementation
1000
x16008
732B
Cormen --- The Best Friend Of a Man
dp
,
greedy
1000
x24192
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x68791
731A
Night at the Museum
implementation
,
strings
800
x43873
729A
Interview with Oleg
implementation
,
strings
900
x7335
727A
Transformation: from A to B
brute force
,
dfs and similar
,
math
1000
x13428
725A
Jumping Ball
implementation
1000
x7038
724A
Checking the Calendar
implementation
1000
x7016
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x72929
721A
One-dimensional Japanese Crossword
implementation
800
x18162
716A
Crazy Computer
implementation
800
x21886
712A
Memory and Crow
implementation
,
math
800
x11545
711A
Bus to Udayland
brute force
,
implementation
800
x28973
710A
King Moves
implementation
800
x13621
709A
Juicer
implementation
900
x30598
707A
Brain's Photos
implementation
800
x47260
706A
Beru-taxi
brute force
,
geometry
,
implementation
900
x14341
705A
Hulk
implementation
800
x101368
703A
Mishka and Game
implementation
800
x54380
702A
Maximum Increase
dp
,
greedy
,
implementation
800
x42792
701A
Cards
greedy
,
implementation
800
x19253
699A
Launch of Collider
implementation
1000
x15327
697A
Pineapple Incident
implementation
,
math
900
x12634
691A
Fashion in Berland
implementation
1000
x9982
688B
Lovely Palindromes
constructive algorithms
,
math
1000
x30935
688A
Opponents
implementation
800
x13805
686A
Free Ice Cream
constructive algorithms
,
implementation
800
x36111
681A
A Good Contest
implementation
800
x15158
680B
Bear and Finding Criminals
constructive algorithms
,
implementation
1000
x23685
680A
Bear and Five Cards
constructive algorithms
,
implementation
800
x12242
678A
Johny Likes Numbers
implementation
,
math
800
x12652
677A
Vanya and Fence
implementation
800
x133537
676A
Nicholas and Permutation
constructive algorithms
,
implementation
800
x13682
673A
Bear and Game
implementation
800
x9939
672B
Different is Good
constructive algorithms
,
implementation
,
strings
1000
x17131
672A
Summer Camp
implementation
800
x15108
670B
Game of Robots
implementation
1000
x11029
670A
Holidays
brute force
,
constructive algorithms
,
greedy
,
math
900
x16561
669A
Little Artem and Presents
math
800
x10590
664A
Complicated GCD
math
,
number theory
800
x17661
660B
Seating On Bus
implementation
1000
x5260
659A
Round House
implementation
,
math
1000
x15450
658A
Bear and Reverse Radewoosh
implementation
800
x6999
653A
Bear and Three Balls
brute force
,
implementation
,
sortings
900
x8056
652B
z-sort
sortings
1000
x9938
649A
Любимые числа Поликарпа
constructive algorithms
,
implementation
1000
x1127
648B
Собери стол
constructive algorithms
,
sortings
800
x1272
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