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Before contest
Codeforces Round 941 (Div. 1)
32:47:18
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Before contest
Codeforces Round 941 (Div. 2)
32:47:19
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→ Filter Problems
Difficulty:
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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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Custom test
Problems
#
Name
48B
Land Lot
brute force
,
implementation
1200
x2598
172B
Pseudorandom Sequence Period
*special problem
,
implementation
,
number theory
1200
x2685
69B
Bets
greedy
,
implementation
1200
x3183
55A
Flea travel
implementation
,
math
1200
x3329
645A
Amity Assessment
brute force
,
constructive algorithms
,
implementation
1200
x3355
38B
Chess
brute force
,
implementation
,
math
1200
x3381
15A
Cottage Village
implementation
,
sortings
1200
x3553
1578E
Easy Scheduling
implementation
,
math
1200
x3725
88A
Chord
brute force
,
implementation
1200
x3735
134A
Average Numbers
brute force
,
implementation
1200
x3791
33A
What is for dinner?
greedy
,
implementation
1200
x3840
412C
Pattern
implementation
,
strings
1200
x3845
717C
Potions Homework
implementation
,
sortings
1200
x3862
774C
Maximum Number
*special problem
,
constructive algorithms
,
greedy
,
implementation
1200
x4018
112B
Petya and Square
implementation
,
math
1200
x4061
203A
Two Problems
brute force
,
implementation
1200
x4111
1075B
Taxi drivers and Lyft
implementation
,
sortings
1200
x4184
234A
Lefthanders and Righthanders
implementation
1200
x4376
401B
Sereja and Contests
greedy
,
implementation
,
math
1200
x4377
63B
Settlers' Training
implementation
1200
x4706
255B
Code Parsing
implementation
1200
x4860
216A
Tiling with Hexagons
implementation
,
math
1200
x4909
143B
Help Kingdom of Far Far Away 2
implementation
,
strings
1200
x4910
725B
Food on the Plane
implementation
,
math
1200
x5088
9B
Running Student
brute force
,
geometry
,
implementation
1200
x5184
1510K
King's Task
brute force
,
graphs
,
implementation
1200
x5260
5B
Center Alignment
implementation
,
strings
1200
x5529
593A
2Char
brute force
,
implementation
1200
x5670
899B
Months and Years
implementation
1200
x5746
639A
Bear and Displayed Friends
implementation
1200
x6015
817A
Treasure Hunt
implementation
,
math
,
number theory
1200
x6051
812A
Sagheer and Crossroads
implementation
1200
x6160
1043B
Lost Array
implementation
1200
x6195
151B
Phone Numbers
implementation
,
strings
1200
x6210
592A
PawnChess
implementation
1200
x6302
722B
Verse Pattern
implementation
,
strings
1200
x6342
811B
Vladik and Complicated Book
implementation
,
sortings
1200
x6436
895A
Pizza Separation
brute force
,
implementation
1200
x6448
59B
Fortune Telling
implementation
,
number theory
1200
x6637
366B
Dima and To-do List
brute force
,
implementation
1200
x6713
612B
HDD is Outdated Technology
implementation
,
math
1200
x6814
315B
Sereja and Array
implementation
1200
x6831
131B
Opposites Attract
implementation
,
math
1200
x6856
145A
Lucky Conversion
greedy
,
implementation
1200
x6953
931B
World Cup
constructive algorithms
,
implementation
1200
x7020
920B
Tea Queue
implementation
1200
x7067
379B
New Year Present
constructive algorithms
,
implementation
1200
x7159
631B
Print Check
constructive algorithms
,
implementation
1200
x7240
985B
Switches and Lamps
implementation
1200
x7296
400B
Inna and New Matrix of Candies
brute force
,
implementation
,
schedules
1200
x7318
424B
Megacity
binary search
,
greedy
,
implementation
,
sortings
1200
x7323
208D
Prizes, Prizes, more Prizes
implementation
1200
x7486
908B
New Year and Buggy Bot
brute force
,
implementation
1200
x7569
903B
The Modcrab
greedy
,
implementation
1200
x7572
1084B
Kvass and the Fair Nut
greedy
,
implementation
1200
x7686
292B
Network Topology
graphs
,
implementation
1200
x7686
729B
Spotlights
dp
,
implementation
1200
x7699
606A
Magic Spheres
implementation
1200
x7738
302B
Eugeny and Play List
binary search
,
implementation
,
two pointers
1200
x7771
828A
Restaurant Tables
implementation
1200
x7787
560B
Gerald is into Art
constructive algorithms
,
implementation
1200
x7821
960A
Check the string
implementation
1200
x8020
1027B
Numbers on the Chessboard
implementation
,
math
1200
x8066
591B
Rebranding
implementation
,
strings
1200
x8127
1051A
Vasya And Password
greedy
,
implementation
,
strings
1200
x8307
1082A
Vasya and Book
implementation
,
math
1200
x8412
914B
Conan and Agasa play a Card Game
games
,
greedy
,
implementation
1200
x8491
1023A
Single Wildcard Pattern Matching
brute force
,
implementation
,
strings
1200
x8505
660A
Co-prime Array
greedy
,
implementation
,
math
,
number theory
1200
x8508
934B
A Prosperous Lot
constructive algorithms
,
implementation
1200
x8514
754A
Lesha and array splitting
constructive algorithms
,
greedy
,
implementation
1200
x8528
1121B
Mike and Children
brute force
,
implementation
1200
x8565
1000A
Codehorses T-shirts
greedy
,
implementation
1200
x8573
133B
Unary
implementation
1200
x8616
583B
Robot's Task
greedy
,
implementation
1200
x8617
892B
Wrath
greedy
,
implementation
,
two pointers
1200
x8654
408B
Garland
implementation
1200
x8841
708A
Letters Cyclic Shift
constructive algorithms
,
greedy
,
implementation
,
strings
1200
x8843
574A
Bear and Elections
greedy
,
implementation
1200
x8959
1017B
The Bits
implementation
,
math
1200
x9034
959B
Mahmoud and Ehab and the message
dsu
,
greedy
,
implementation
1200
x9072
463A
Caisa and Sugar
brute force
,
implementation
1200
x9093
1099C
Postcard
constructive algorithms
,
implementation
1200
x9391
1191B
Tokitsukaze and Mahjong
brute force
,
implementation
1200
x9409
732C
Sanatorium
binary search
,
constructive algorithms
,
greedy
,
implementation
,
math
1200
x9467
385B
Bear and Strings
brute force
,
greedy
,
implementation
,
math
,
strings
1200
x9506
1011B
Planning The Expedition
binary search
,
brute force
,
implementation
1200
x9795
489A
SwapSort
greedy
,
implementation
,
sortings
1200
x9799
31A
Worms Evolution
implementation
1200
x9904
222A
Shooshuns and Sequence
brute force
,
implementation
1200
x10321
431B
Shower Line
brute force
,
implementation
1200
x10453
1091B
New Year and the Treasure Geolocation
brute force
,
constructive algorithms
,
greedy
,
implementation
1200
x10495
264A
Escape from Stones
constructive algorithms
,
data structures
,
implementation
,
two pointers
1200
x10584
743A
Vladik and flights
constructive algorithms
,
greedy
,
implementation
1200
x10841
911B
Two Cakes
binary search
,
brute force
,
implementation
1200
x10854
1140B
Good String
implementation
,
strings
1200
x11134
1015B
Obtaining the String
implementation
1200
x11284
659C
Tanya and Toys
greedy
,
implementation
1200
x11377
432B
Football Kit
brute force
,
greedy
,
implementation
1200
x11458
1118B
Tanya and Candies
implementation
1200
x11636
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