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Codeforces Round 968 (Div. 2)
30:08:06
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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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Custom test
Problems
#
Name
1089L
Lazyland
900
x3891
1088A
Ehab and another construction problem
brute force
,
constructive algorithms
800
x16704
1085A
Right-Left Cipher
implementation
,
strings
800
x12110
1081A
Definite Game
constructive algorithms
,
math
800
x11996
1080B
Margarite and the best present
math
900
x11724
1080A
Petya and Origami
math
800
x18010
1077A
Frog Jumping
math
800
x29743
1075A
The King's Race
implementation
,
math
800
x8446
1065A
Vasya and Chocolate
implementation
,
math
800
x14605
1064A
Make a triangle!
brute force
,
geometry
,
math
800
x22228
1061A
Coins
greedy
,
implementation
,
math
800
x21693
1060A
Phone Numbers
brute force
800
x14007
1057A
Bmail Computer Network
*special problem
,
dfs and similar
,
trees
900
x5960
1056A
Determine Line
implementation
800
x6612
1055A
Metro
graphs
900
x10570
1054A
Elevator or Stairs?
implementation
800
x9026
1047B
Cover Points
geometry
,
math
900
x17090
1047A
Little C Loves 3 I
math
800
x19797
1043A
Elections
implementation
,
math
800
x10748
1041A
Heist
greedy
,
implementation
,
sortings
800
x24860
1038A
Equality
implementation
,
strings
800
x14815
1032A
Kitchen Utensils
900
x6837
1031A
Golden Plate
implementation
,
math
800
x12835
1030A
In Search of an Easy Problem
implementation
800
x127166
1028A
Find Square
implementation
800
x10730
1025A
Doggo Recoloring
implementation
,
sortings
900
x14974
1017A
The Rank
implementation
800
x20275
1016A
Death Note
greedy
,
implementation
,
math
900
x14831
1015A
Points in Segments
implementation
800
x20799
1013A
Piles With Stones
math
800
x10906
1011A
Stages
greedy
,
implementation
,
sortings
900
x12110
1009A
Game Shopping
implementation
800
x11709
1008A
Romaji
implementation
,
strings
900
x14939
1006A
Adjacent Replacements
implementation
800
x21480
1005B
Delete from the Left
brute force
,
implementation
,
strings
900
x23082
1005A
Tanya and Stairways
implementation
800
x23443
1004A
Sonya and Hotels
implementation
900
x11160
1003A
Polycarp's Pockets
implementation
800
x26946
1002A1
Generate superposition of all basis states
800
x836
999B
Reversing Encryption
implementation
900
x17434
999A
Mishka and Contest
brute force
,
implementation
800
x22765
996A
Hit the Lottery
dp
,
greedy
800
x88616
994A
Fingerprints
implementation
800
x14059
992A
Nastya and an Array
implementation
,
sortings
800
x13034
991B
Getting an A
greedy
,
sortings
900
x12534
989A
A Blend of Springtime
implementation
,
strings
900
x10261
988A
Diverse Team
brute force
,
implementation
800
x24616
987A
Infinity Gauntlet
implementation
800
x16462
984A
Game
sortings
800
x19303
981A
Antipalindrome
brute force
,
implementation
,
strings
900
x9228
980A
Links and Pearls
implementation
,
math
900
x10393
978B
File Name
greedy
,
strings
800
x35847
978A
Remove Duplicates
implementation
800
x26746
977B
Two-gram
implementation
,
strings
900
x38517
977A
Wrong Subtraction
implementation
800
x163404
976A
Minimum Binary Number
implementation
800
x10503
975A
Aramic script
implementation
,
strings
900
x9164
965A
Paper Airplanes
math
800
x9438
964A
Splits
math
800
x9347
961A
Tetris
implementation
900
x10011
959A
Mahmoud and Ehab and the even-odd game
games
,
math
800
x46211
954A
Diagonal Walking
implementation
800
x10470
952A
Quirky Quantifiers
math
800
x11193
950A
Left-handers, Right-handers and Ambidexters
implementation
,
math
800
x15169
948A
Protect Sheep
brute force
,
dfs and similar
,
graphs
,
implementation
900
x13638
946A
Partition
greedy
800
x16284
939A
Love Triangle
graphs
800
x24853
938A
Word Correction
implementation
800
x11410
937A
Olympiad
implementation
,
sortings
800
x15064
935B
Fafa and the Gates
implementation
900
x11502
935A
Fafa and his Company
brute force
,
implementation
800
x42523
932A
Palindromic Supersequence
constructive algorithms
800
x10264
931A
Friends Meeting
brute force
,
greedy
,
implementation
,
math
800
x11836
919A
Supermarket
brute force
,
greedy
,
implementation
800
x16070
918B
Radio Station
implementation
,
strings
900
x16145
918A
Eleven
brute force
,
implementation
800
x16945
916A
Jamie and Alarm Snooze
brute force
,
implementation
,
math
900
x8565
915A
Garden
implementation
900
x14606
914A
Perfect Squares
brute force
,
implementation
,
math
900
x13973
913A
Modular Exponentiation
implementation
,
math
900
x21066
912A
Tricky Alchemy
implementation
800
x13423
910A
The Way to Home
dfs and similar
,
dp
,
greedy
,
implementation
800
x11742
908A
New Year and Counting Cards
brute force
,
implementation
800
x14759
903A
Hungry Student Problem
greedy
,
implementation
900
x14519
900A
Find Extra One
geometry
,
implementation
800
x13529
899A
Splitting in Teams
constructive algorithms
,
greedy
,
math
800
x10159
898A
Rounding
implementation
,
math
800
x15918
897A
Scarborough Fair
implementation
800
x14099
894A
QAQ
brute force
,
dp
800
x33890
893A
Chess For Three
implementation
900
x10126
892A
Greed
greedy
,
implementation
900
x13390
888A
Local Extrema
brute force
,
implementation
800
x10797
884A
Book Reading
implementation
800
x10413
879A
Borya's Diagnosis
implementation
900
x9051
876A
Trip For Meal
math
900
x9313
873A
Chores
implementation
800
x8150
870A
Search for Pretty Integers
brute force
,
implementation
900
x10087
868A
Bark to Unlock
brute force
,
implementation
,
strings
900
x8637
867A
Between the Offices
implementation
800
x19133
863A
Quasi-palindrome
brute force
,
implementation
900
x10110
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