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Codeforces Round 963 (Div. 2)
22:18:07
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math
combine-tags-by-or
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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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Problems
#
Name
1221A
2048 Game
brute force
,
greedy
,
math
1000
x16548
1215A
Yellow Cards
greedy
,
implementation
,
math
1000
x11487
1214B
Badges
brute force
,
math
1100
x10781
1213C
Book Reading
math
1200
x18281
1205A
Almost Equal
constructive algorithms
,
greedy
,
math
1200
x14033
1204A
BowWow and the Timetable
math
1000
x20506
1203B
Equal Rectangles
greedy
,
math
1200
x15814
1199B
Water Lily
geometry
,
math
1000
x20214
1196B
Odd Sum Segments
constructive algorithms
,
math
1200
x16465
1195B
Sport Mafia
binary search
,
brute force
,
math
1000
x19469
1195A
Drinks Choosing
greedy
,
math
1000
x12770
1189B
Number Circle
greedy
,
math
,
sortings
1100
x14058
1184A1
Heidi Learns Hashing (Easy)
brute force
,
math
,
number theory
1200
x5907
1182A
Filling Shapes
dp
,
math
1000
x30372
1181A
Chunga-Changa
greedy
,
math
1000
x13425
1176B
Merge it!
math
1100
x17001
1166B
All the Vowels Please
constructive algorithms
,
math
,
number theory
1100
x11401
1165A
Remainder
implementation
,
math
1100
x13695
1154B
Make Them Equal
math
1200
x16454
1153A
Serval and Bus
brute force
,
math
1000
x11471
1149A
Prefix Sum Primes
constructive algorithms
,
greedy
,
math
,
number theory
1200
x15041
1143B
Nirvana
brute force
,
math
,
number theory
1200
x10375
1141A
Game 23
implementation
,
math
1000
x30939
1140D
Minimum Triangulation
dp
,
greedy
,
math
1200
x12498
1136B
Nastya Is Playing Computer Games
constructive algorithms
,
math
1000
x11616
1133B
Preparation for International Women's Day
math
,
number theory
1200
x12586
1117B
Emotes
greedy
,
math
,
sortings
1000
x14151
1117A
Best Subsegment
implementation
,
math
1100
x10966
1108B
Divisors of Two Integers
brute force
,
greedy
,
math
,
number theory
1100
x22920
1107B
Digital root
math
,
number theory
1000
x15382
1104B
Game with string
data structures
,
implementation
,
math
1200
x14716
1101A
Minimum Integer
math
1000
x16907
1100C
NN and the Optical Illusion
binary search
,
geometry
,
math
1200
x10055
1099B
Squares and Segments
binary search
,
constructive algorithms
,
math
1100
x11076
1085B
Div Times Mod
math
1100
x9242
1082A
Vasya and Book
implementation
,
math
1200
x8500
1076B
Divisor Subtraction
implementation
,
math
,
number theory
1200
x12784
1073B
Vasya and Books
implementation
,
math
1000
x10516
1068B
LCM
math
,
number theory
1200
x11341
1066A
Vova and Train
math
1100
x14421
1064B
Equations of Mathematical Magic
math
1200
x7496
1051B
Relatively Prime Pairs
greedy
,
math
,
number theory
1000
x16889
1041B
Buying a TV Set
math
1000
x13853
1038B
Non-Coprime Partition
constructive algorithms
,
math
1100
x13359
1036A
Function Height
math
1000
x10082
1033B
Square Difference
math
,
number theory
1100
x9486
1029B
Creating the Contest
dp
,
greedy
,
math
1200
x16723
1028B
Unnatural Conditions
constructive algorithms
,
math
1200
x8951
1027B
Numbers on the Chessboard
implementation
,
math
1200
x8323
1023B
Pair of Toys
math
1000
x10770
1020A
New Building for SIS
math
1000
x8944
1017B
The Bits
implementation
,
math
1200
x9088
990A
Commentary Boxes
implementation
,
math
1000
x10513
987B
High School: Become Human
math
1100
x11550
979A
Pizza, Pizza, Pizza!!!
math
1000
x13610
967B
Watering System
math
,
sortings
1000
x6997
955A
Feed the cat
greedy
,
math
1100
x6627
946B
Weird Subtraction Process
math
,
number theory
1100
x10769
883M
Quadcopter Competition
greedy
,
math
1100
x3565
875A
Classroom Watch
brute force
,
math
1200
x9532
869B
The Eternal Immortality
math
1100
x13348
859B
Lazy Security Guard
brute force
,
geometry
,
math
1000
x6980
858A
k-rounding
brute force
,
math
,
number theory
1100
x7934
854B
Maxim Buys an Apartment
constructive algorithms
,
math
1200
x8162
847M
Weather Tomorrow
implementation
,
math
1000
x6240
841B
Godsend
games
,
math
1100
x12157
817A
Treasure Hunt
implementation
,
math
,
number theory
1200
x6185
805A
Fake NP
greedy
,
math
1000
x17833
804A
Find Amir
constructive algorithms
,
greedy
,
math
1000
x15336
797A
k-Factorization
implementation
,
math
,
number theory
1100
x14738
794B
Cutting Carrot
geometry
,
math
1200
x6479
789A
Anastasia and pebbles
implementation
,
math
1100
x9273
787A
The Monster
brute force
,
math
,
number theory
1200
x11264
779A
Pupils Redistribution
constructive algorithms
,
math
1000
x9275
777A
Shell Game
constructive algorithms
,
implementation
,
math
1000
x10200
766B
Mahmoud and a Triangle
constructive algorithms
,
geometry
,
greedy
,
math
,
number theory
,
sortings
1000
x32117
765C
Table Tennis Game 2
math
1200
x6889
761A
Dasha and Stairs
brute force
,
constructive algorithms
,
implementation
,
math
1000
x14410
753A
Santa Claus and Candies
dp
,
greedy
,
math
1000
x8919
742A
Arpa’s hard exam and Mehrdad’s naive cheat
implementation
,
math
,
number theory
1000
x41336
733B
Parade
math
1100
x10640
732C
Sanatorium
binary search
,
constructive algorithms
,
greedy
,
implementation
,
math
1200
x9662
727A
Transformation: from A to B
brute force
,
dfs and similar
,
math
1000
x13584
725B
Food on the Plane
implementation
,
math
1200
x5117
721B
Passwords
implementation
,
math
,
sortings
,
strings
1100
x12036
714A
Meeting of Old Friends
implementation
,
math
1100
x10742
705B
Spider Man
games
,
math
1100
x9089
701B
Cells Not Under Attack
data structures
,
math
1200
x11653
688B
Lovely Palindromes
constructive algorithms
,
math
1000
x31351
682A
Alyona and Numbers
constructive algorithms
,
math
,
number theory
1100
x21156
675A
Infinite Sequence
math
1100
x14855
667A
Pouring Rain
geometry
,
math
1100
x7940
660A
Co-prime Array
greedy
,
implementation
,
math
,
number theory
1200
x8690
659A
Round House
implementation
,
math
1000
x15539
651A
Joysticks
dp
,
greedy
,
implementation
,
math
1100
x22777
645B
Mischievous Mess Makers
greedy
,
math
1200
x3355
638A
Home Numbers
*special problem
,
constructive algorithms
,
math
1100
x3834
633A
Ebony and Ivory
brute force
,
math
,
number theory
1100
x12573
630R
Game
games
,
math
1200
x8537
630J
Divisibility
math
,
number theory
1100
x10884
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