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Codeforces Round 955 (Div. 2, with prizes from NEAR!)
08:46:43
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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
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Status
Standings
Custom test
Problems
#
Name
1005A
Tanya and Stairways
implementation
800
x23231
1004A
Sonya and Hotels
implementation
900
x11022
1003A
Polycarp's Pockets
implementation
800
x26685
1002A1
Generate superposition of all basis states
800
x826
999B
Reversing Encryption
implementation
900
x17261
999A
Mishka and Contest
brute force
,
implementation
800
x22585
998A
Balloons
constructive algorithms
,
implementation
1000
x9375
996A
Hit the Lottery
dp
,
greedy
800
x86058
994A
Fingerprints
implementation
800
x13942
992A
Nastya and an Array
implementation
,
sortings
800
x12957
991B
Getting an A
greedy
,
sortings
900
x12409
991A
If at first you don't succeed...
implementation
1000
x10429
990A
Commentary Boxes
implementation
,
math
1000
x10480
989A
A Blend of Springtime
implementation
,
strings
900
x10202
988A
Diverse Team
brute force
,
implementation
800
x24176
987A
Infinity Gauntlet
implementation
800
x16352
984A
Game
sortings
800
x19175
981B
Businessmen Problems
sortings
1000
x6807
981A
Antipalindrome
brute force
,
implementation
,
strings
900
x9173
980A
Links and Pearls
implementation
,
math
900
x10277
979A
Pizza, Pizza, Pizza!!!
math
1000
x13500
978C
Letters
binary search
,
implementation
,
two pointers
1000
x24726
978B
File Name
greedy
,
strings
800
x35406
978A
Remove Duplicates
implementation
800
x26384
977B
Two-gram
implementation
,
strings
900
x37561
977A
Wrong Subtraction
implementation
800
x158499
976A
Minimum Binary Number
implementation
800
x10459
975A
Aramic script
implementation
,
strings
900
x9046
967B
Watering System
math
,
sortings
1000
x6915
965A
Paper Airplanes
math
800
x9383
964A
Splits
math
800
x9119
961A
Tetris
implementation
900
x9950
959A
Mahmoud and Ehab and the even-odd game
games
,
math
800
x45031
958B1
Maximum Control (easy)
implementation
1000
x3342
954A
Diagonal Walking
implementation
800
x10405
952A
Quirky Quantifiers
math
800
x11147
950A
Left-handers, Right-handers and Ambidexters
implementation
,
math
800
x15019
948A
Protect Sheep
brute force
,
dfs and similar
,
graphs
,
implementation
900
x13493
946A
Partition
greedy
800
x16145
939B
Hamster Farm
implementation
1000
x10350
939A
Love Triangle
graphs
800
x24548
938A
Word Correction
implementation
800
x11314
937A
Olympiad
implementation
,
sortings
800
x14906
935B
Fafa and the Gates
implementation
900
x11426
935A
Fafa and his Company
brute force
,
implementation
800
x41959
932A
Palindromic Supersequence
constructive algorithms
800
x10158
931A
Friends Meeting
brute force
,
greedy
,
implementation
,
math
800
x11774
920A
Water The Garden
implementation
1000
x7632
919A
Supermarket
brute force
,
greedy
,
implementation
800
x15973
918B
Radio Station
implementation
,
strings
900
x15857
918A
Eleven
brute force
,
implementation
800
x16829
916A
Jamie and Alarm Snooze
brute force
,
implementation
,
math
900
x8507
915A
Garden
implementation
900
x14451
914A
Perfect Squares
brute force
,
implementation
,
math
900
x13872
913A
Modular Exponentiation
implementation
,
math
900
x20732
912A
Tricky Alchemy
implementation
800
x13361
910A
The Way to Home
dfs and similar
,
dp
,
greedy
,
implementation
800
x11479
909A
Generate Login
brute force
,
greedy
,
sortings
1000
x9205
908A
New Year and Counting Cards
brute force
,
implementation
800
x14656
903A
Hungry Student Problem
greedy
,
implementation
900
x14456
900A
Find Extra One
geometry
,
implementation
800
x13443
899A
Splitting in Teams
constructive algorithms
,
greedy
,
math
800
x10115
898A
Rounding
implementation
,
math
800
x15778
897A
Scarborough Fair
implementation
800
x13985
894A
QAQ
brute force
,
dp
800
x33321
893B
Beautiful Divisors
brute force
,
implementation
1000
x11048
893A
Chess For Three
implementation
900
x10059
892A
Greed
greedy
,
implementation
900
x13287
888B
Buggy Robot
greedy
1000
x9577
888A
Local Extrema
brute force
,
implementation
800
x10722
887A
Div. 64
implementation
1000
x11074
886B
Vlad and Cafes
1000
x7797
886A
ACM ICPC
brute force
1000
x10147
884A
Book Reading
implementation
800
x10367
879A
Borya's Diagnosis
implementation
900
x8996
876A
Trip For Meal
math
900
x9282
873A
Chores
implementation
800
x8016
870A
Search for Pretty Integers
brute force
,
implementation
900
x10013
868A
Bark to Unlock
brute force
,
implementation
,
strings
900
x8561
867A
Between the Offices
implementation
800
x18890
864B
Polycarp and Letters
brute force
,
implementation
,
strings
1000
x8954
864A
Fair Game
implementation
,
sortings
1000
x11561
863A
Quasi-palindrome
brute force
,
implementation
900
x10015
862A
Mahmoud and Ehab and the MEX
greedy
,
implementation
1000
x9402
859B
Lazy Security Guard
brute force
,
geometry
,
math
1000
x6865
859A
Declined Finalists
greedy
,
implementation
800
x7639
855A
Tom Riddle's Diary
brute force
,
implementation
,
strings
800
x20436
854A
Fraction
brute force
,
constructive algorithms
,
math
800
x13460
851A
Arpa and a research in Mexican wave
implementation
,
math
800
x9536
849A
Odds and Ends
implementation
1000
x8971
847M
Weather Tomorrow
implementation
,
math
1000
x6212
847G
University Classes
implementation
900
x6559
844A
Diversity
greedy
,
implementation
,
strings
1000
x10490
841A
Generous Kefa
brute force
,
implementation
900
x13000
839A
Arya and Bran
implementation
900
x14028
837A
Text Volume
implementation
800
x9276
835A
Key races
math
800
x20005
834A
The Useless Toy
implementation
900
x8540
832A
Sasha and Sticks
games
,
math
800
x20464
831B
Keyboard Layouts
implementation
,
strings
800
x14142
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