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Before contest
Codeforces Round 952 (Div. 4)
14:52:15
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Difficulty:
—
implementation
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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Status
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Custom test
Problems
#
Name
830B
Cards Sorting
data structures
,
implementation
,
sortings
1600
x2803
828B
Black Square
implementation
1300
x5654
828A
Restaurant Tables
implementation
1200
x7826
827B
High Load
constructive algorithms
,
greedy
,
implementation
,
trees
1800
x3444
825D
Suitable Replacement
binary search
,
greedy
,
implementation
1500
x3187
825C
Multi-judge Solving
greedy
,
implementation
1600
x4372
825B
Five-In-a-Row
brute force
,
implementation
1600
x4071
825A
Binary Protocol
implementation
1100
x7567
822C
Hacker, pack your bags!
binary search
,
greedy
,
implementation
,
sortings
1600
x4540
822B
Crossword solving
brute force
,
implementation
,
strings
1000
x9344
822A
I'm bored with life
implementation
,
math
,
number theory
800
x31906
821A
Okabe and Future Gadget Laboratory
implementation
800
x7947
820A
Mister B and Book Reading
implementation
900
x8051
819B
Mister B and PR Shifts
data structures
,
implementation
,
math
1900
x1626
818D
Multicolored Cars
data structures
,
implementation
1700
x3400
818C
Sofa Thief
brute force
,
implementation
2000
x1215
818B
Permutation Game
implementation
1600
x2975
818A
Diplomas and Certificates
implementation
,
math
800
x6803
817B
Makes And The Product
combinatorics
,
implementation
,
math
,
sortings
1500
x5580
817A
Treasure Hunt
implementation
,
math
,
number theory
1200
x6084
816B
Karen and Coffee
binary search
,
data structures
,
implementation
1400
x16689
816A
Karen and Morning
brute force
,
implementation
1000
x8933
815E
Karen and Neighborhood
binary search
,
constructive algorithms
,
implementation
2900
x219
815A
Karen and Game
brute force
,
greedy
,
implementation
1700
x5580
814A
An abandoned sentiment from past
constructive algorithms
,
greedy
,
implementation
,
sortings
900
x10286
813A
The Contest
implementation
1100
x5017
812D
Sagheer and Kindergarten
dfs and similar
,
graphs
,
implementation
,
trees
2700
x327
812A
Sagheer and Crossroads
implementation
1200
x6177
811C
Vladik and Memorable Trip
dp
,
implementation
1900
x3210
811B
Vladik and Complicated Book
implementation
,
sortings
1200
x6446
811A
Vladik and Courtesy
brute force
,
implementation
800
x11804
810A
Straight <<A>>
implementation
,
math
900
x8734
809A
Do you want a date?
implementation
,
math
,
sortings
1500
x4666
808D
Array Division
binary search
,
data structures
,
implementation
1900
x6804
808B
Average Sleep Time
data structures
,
implementation
,
math
1300
x6807
808A
Lucky Year
implementation
900
x9114
807B
T-Shirt Hunt
brute force
,
implementation
1300
x3529
807A
Is it rated?
implementation
,
sortings
900
x19719
804B
Minimum number of steps
combinatorics
,
greedy
,
implementation
,
math
1400
x9546
802G
Fake News (easy)
implementation
,
strings
800
x6763
799C
Fountains
binary search
,
data structures
,
implementation
1800
x3663
799B
T-shirt buying
data structures
,
implementation
1400
x8484
799A
Carrot Cakes
brute force
,
implementation
1100
x18127
797B
Odd sum
dp
,
greedy
,
implementation
1400
x10215
797A
k-Factorization
implementation
,
math
,
number theory
1100
x14307
796B
Find The Bone
implementation
1300
x8968
796A
Buying A House
brute force
,
implementation
800
x12860
794A
Bank Robbery
brute force
,
implementation
800
x6937
793C
Mice problem
geometry
,
implementation
,
math
,
sortings
2300
x1235
793B
Igor and his way to work
dfs and similar
,
graphs
,
implementation
,
shortest paths
1600
x4359
793A
Oleg and shares
implementation
,
math
900
x6597
792B
Counting-out Rhyme
implementation
1300
x5932
792A
New Bus Route
implementation
,
sortings
1100
x8817
791A
Bear and Big Brother
implementation
800
x181916
789B
Masha and geometric depression
brute force
,
implementation
,
math
1700
x4353
789A
Anastasia and pebbles
implementation
,
math
1100
x9235
787B
Not Afraid
greedy
,
implementation
,
math
1300
x5576
785A
Anton and Polyhedrons
implementation
,
strings
800
x83560
784F
Crunching Numbers Just for You
*special problem
,
implementation
1900
x1006
784E
Twisted Circuit
*special problem
,
brute force
,
implementation
2000
x1893
784D
Touchy-Feely Palindromes
*special problem
,
implementation
1900
x428
784C
INTERCALC
*special problem
,
implementation
1800
x680
780H
Intranet of Buses
binary search
,
geometry
,
implementation
,
two pointers
3100
x117
780D
Innokenty and a Football League
2-sat
,
graphs
,
greedy
,
implementation
,
shortest paths
,
strings
1900
x2845
780A
Andryusha and Socks
implementation
800
x18775
778B
Bitwise Formula
bitmasks
,
brute force
,
dfs and similar
,
expression parsing
,
implementation
1800
x2271
777D
Cloud of Hashtags
binary search
,
greedy
,
implementation
,
strings
1800
x4942
777C
Alyona and Spreadsheet
binary search
,
data structures
,
dp
,
greedy
,
implementation
,
two pointers
1600
x6296
777A
Shell Game
constructive algorithms
,
implementation
,
math
1000
x10062
776F
Sherlock's bet to Moriarty
constructive algorithms
,
data structures
,
divide and conquer
,
geometry
,
graphs
,
implementation
,
trees
2800
x419
776C
Molly's Chemicals
binary search
,
brute force
,
data structures
,
implementation
,
math
1800
x5802
776A
A Serial Killer
brute force
,
implementation
,
strings
900
x11874
774K
Stepan and Vowels
*special problem
,
implementation
,
strings
1600
x1257
774D
Lie or Truth
*special problem
,
constructive algorithms
,
implementation
,
sortings
1500
x1917
774C
Maximum Number
*special problem
,
constructive algorithms
,
greedy
,
implementation
1200
x4038
770D
Draw Brackets!
*special problem
,
implementation
1400
x1569
770C
Online Courses In BSU
*special problem
,
dfs and similar
,
graphs
,
implementation
1500
x2541
770B
Maximize Sum of Digits
*special problem
,
implementation
,
math
1300
x2739
770A
New Password
*special problem
,
implementation
800
x18947
769A
Year of University Entrance
*special problem
,
implementation
,
sortings
800
x5593
768C
Jon Snow and his Favourite Number
brute force
,
dp
,
implementation
,
sortings
1800
x3774
767A
Snacktower
data structures
,
implementation
1100
x19403
765E
Tree Folding
dfs and similar
,
dp
,
greedy
,
implementation
,
trees
2200
x1250
765B
Code obfuscation
greedy
,
implementation
,
strings
1100
x7047
765A
Neverending competitions
implementation
,
math
900
x8886
764B
Timofey and cubes
constructive algorithms
,
implementation
900
x11657
764A
Taymyr is calling you
brute force
,
implementation
,
math
800
x16074
763C
Timofey and remoduling
brute force
,
implementation
,
math
,
number theory
2600
x706
763A
Timofey and a tree
dfs and similar
,
dp
,
dsu
,
graphs
,
implementation
,
trees
1600
x10183
762D
Maximum path
dp
,
greedy
,
implementation
2300
x1299
762B
USB vs. PS/2
greedy
,
implementation
,
sortings
,
two pointers
1400
x7628
761F
Dasha and Photos
brute force
,
data structures
,
dp
,
implementation
2600
x408
761C
Dasha and Password
brute force
,
dp
,
implementation
1500
x5844
761B
Dasha and friends
brute force
,
implementation
,
math
1300
x6813
761A
Dasha and Stairs
brute force
,
constructive algorithms
,
implementation
,
math
1000
x14361
760A
Petr and a calendar
implementation
,
math
800
x7753
758C
Unfair Poll
binary search
,
constructive algorithms
,
implementation
,
math
1700
x3824
758B
Blown Garland
brute force
,
implementation
,
number theory
1100
x10085
758A
Holiday Of Equality
implementation
,
math
800
x58037
757A
Gotta Catch Em' All!
implementation
1000
x11105
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