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Codeforces Round 946 (Div. 3)
05:56:50
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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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Status
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Custom test
Problems
#
Name
1904B
Collecting Game
binary search
,
dp
,
greedy
,
sortings
,
two pointers
1100
x12972
869B
The Eternal Immortality
math
1100
x12959
1672C
Unequal Array
constructive algorithms
,
greedy
,
implementation
1100
x12942
581B
Luxurious Houses
implementation
,
math
1100
x12904
1421B
Putting Bricks in the Wall
constructive algorithms
,
implementation
1100
x12892
1787B
Number Factorization
greedy
,
math
,
number theory
1100
x12744
1042A
Benches
binary search
,
implementation
1100
x12521
1670B
Dorms War
brute force
,
implementation
,
strings
1100
x12427
1534B
Histogram Ugliness
greedy
,
implementation
,
math
1100
x12377
1942B
Bessie and MEX
constructive algorithms
,
math
1100
x12357
633A
Ebony and Ivory
brute force
,
math
,
number theory
1100
x12354
1836B
Astrophysicists
greedy
,
math
1100
x12290
6B
President's Office
implementation
1100
x12178
534A
Exam
constructive algorithms
,
implementation
,
math
1100
x12049
1415B
Repainting Street
brute force
,
brute force
,
greedy
1100
x12012
841B
Godsend
games
,
math
1100
x11985
721B
Passwords
implementation
,
math
,
sortings
,
strings
1100
x11983
1523B
Lord of the Values
constructive algorithms
1100
x11972
1030B
Vasya and Cornfield
geometry
1100
x11885
1966B
Rectangle Filling
constructive algorithms
,
implementation
1100
x11861
382A
Ksenia and Pan Scales
greedy
,
implementation
1100
x11801
1884B
Haunted House
binary search
,
greedy
,
math
,
two pointers
1100
x11731
1255B
Fridge Lockers
graphs
,
implementation
1100
x11688
1221B
Knights
constructive algorithms
,
greedy
1100
x11629
1413B
A New Technique
implementation
1100
x11618
1609B
William the Vigilant
implementation
,
strings
1100
x11514
545B
Equidistant String
greedy
1100
x11433
987B
High School: Become Human
math
1100
x11421
911A
Nearest Minimums
implementation
1100
x11306
1166B
All the Vowels Please
constructive algorithms
,
math
,
number theory
1100
x11261
225A
Dice Tower
constructive algorithms
,
greedy
1100
x11125
1099B
Squares and Segments
binary search
,
constructive algorithms
,
math
1100
x10993
253A
Boys and Girls
greedy
1100
x10950
755B
PolandBall and Game
binary search
,
data structures
,
games
,
greedy
,
sortings
,
strings
1100
x10946
835B
The number on the board
greedy
1100
x10910
1117A
Best Subsegment
implementation
,
math
1100
x10909
1105A
Salem and Sticks
brute force
,
implementation
1100
x10795
877A
Alex and broken contest
implementation
,
strings
1100
x10722
630J
Divisibility
math
,
number theory
1100
x10704
714A
Meeting of Old Friends
implementation
,
math
1100
x10686
946B
Weird Subtraction Process
math
,
number theory
1100
x10680
733B
Parade
math
1100
x10596
1214B
Badges
brute force
,
math
1100
x10541
1119A
Ilya and a Colorful Walk
greedy
,
implementation
1100
x10427
779B
Weird Rounding
brute force
,
greedy
1100
x10204
596B
Wilbur and Array
greedy
,
implementation
1100
x10203
558A
Lala Land and Apple Trees
brute force
,
implementation
,
sortings
1100
x10191
785B
Anton and Classes
greedy
,
sortings
1100
x10143
723B
Text Document Analysis
expression parsing
,
implementation
,
strings
1100
x10077
842B
Gleb And Pizza
geometry
1100
x10068
758B
Blown Garland
brute force
,
implementation
,
number theory
1100
x10065
155B
Combination
greedy
,
sortings
1100
x10026
630D
Hexagons!
math
1100
x9965
110B
Lucky String
constructive algorithms
,
strings
1100
x9965
370A
Rook, Bishop and King
graphs
,
math
,
shortest paths
1100
x9934
548A
Mike and Fax
brute force
,
implementation
,
strings
1100
x9838
1105B
Zuhair and Strings
brute force
,
implementation
,
strings
1100
x9798
902A
Visiting a Friend
greedy
,
implementation
1100
x9691
712B
Memory and Trident
implementation
,
strings
1100
x9639
1132A
Regular Bracket Sequence
greedy
,
implementation
1100
x9492
1227A
Math Problem
math
1100
x9477
869A
The Artful Expedient
brute force
,
implementation
1100
x9364
25B
Phone numbers
implementation
1100
x9341
898B
Proper Nutrition
brute force
,
implementation
,
number theory
1100
x9303
355A
Vasya and Digital Root
constructive algorithms
,
implementation
1100
x9270
1033B
Square Difference
math
,
number theory
1100
x9247
789A
Anastasia and pebbles
implementation
,
math
1100
x9220
1085B
Div Times Mod
math
1100
x9175
347B
Fixed Points
brute force
,
implementation
,
math
1100
x9151
705B
Spider Man
games
,
math
1100
x9051
1202A
You Are Given Two Binary Strings...
bitmasks
,
greedy
1100
x8999
218A
Mountain Scenery
brute force
,
constructive algorithms
,
implementation
1100
x8931
121A
Lucky Sum
implementation
1100
x8841
609B
The Best Gift
constructive algorithms
,
implementation
1100
x8837
792A
New Bus Route
implementation
,
sortings
1100
x8801
1173B
Nauuo and Chess
constructive algorithms
,
greedy
1100
x8792
1060B
Maximum Sum of Digits
greedy
1100
x8787
289A
Polo the Penguin and Segments
brute force
,
implementation
1100
x8746
938B
Run For Your Prize
brute force
,
greedy
1100
x8738
522B
Photo to Remember
*special problem
,
data structures
,
dp
,
implementation
1100
x8694
592B
The Monster and the Squirrel
math
1100
x8546
834B
The Festive Evening
data structures
,
implementation
1100
x8526
602A
Two Bases
brute force
,
implementation
1100
x8366
1146B
Hate "A"
implementation
,
strings
1100
x8335
495A
Digital Counter
implementation
1100
x8306
735B
Urbanization
greedy
,
number theory
,
sortings
1100
x8304
557A
Ilya and Diplomas
greedy
,
implementation
,
math
1100
x8204
12B
Correct Solution?
implementation
,
sortings
1100
x8073
985A
Chess Placing
implementation
1100
x8066
629B
Far Relative’s Problem
brute force
1100
x7953
624B
Making a String
greedy
,
sortings
1100
x7912
556B
Case of Fake Numbers
brute force
,
implementation
1100
x7879
731B
Coupons and Discounts
constructive algorithms
,
greedy
1100
x7867
858A
k-rounding
brute force
,
math
,
number theory
1100
x7863
618B
Guess the Permutation
constructive algorithms
1100
x7841
508A
Pasha and Pixels
brute force
1100
x7794
667A
Pouring Rain
geometry
,
math
1100
x7790
544A
Set of Strings
implementation
,
strings
1100
x7749
686B
Little Robber Girl's Zoo
constructive algorithms
,
implementation
,
sortings
1100
x7719
845A
Chess Tourney
implementation
,
sortings
1100
x7634
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