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Codeforces Round 1006 (Div. 3)
17:32:40
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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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Custom test
Problems
#
Name
771F
Bear and Isomorphic Points
geometry
,
two pointers
3300
x83
771E
Bear and Rectangle Strips
dp
,
greedy
3000
x519
771D
Bear and Company
dp
2500
x1377
771C
Bear and Tree Jumps
dfs and similar
,
dp
,
trees
2100
x3188
771B
Bear and Different Names
constructive algorithms
,
greedy
1500
x6967
771A
Bear and Friendship Condition
dfs and similar
,
dsu
,
graphs
1500
x15802
770D
Draw Brackets!
*special problem
,
implementation
1400
x1586
770C
Online Courses In BSU
*special problem
,
dfs and similar
,
graphs
,
implementation
1500
x2709
770B
Maximize Sum of Digits
*special problem
,
implementation
,
math
1300
x2896
770A
New Password
*special problem
,
implementation
800
x20407
769D
k-Interesting Pairs Of Integers
*special problem
,
bitmasks
,
brute force
,
meet-in-the-middle
1700
x2383
769C
Cycle In Maze
*special problem
,
dfs and similar
,
graphs
,
greedy
,
shortest paths
1700
x2425
769B
News About Credit
*special problem
,
greedy
,
two pointers
1200
x3330
769A
Year of University Entrance
*special problem
,
implementation
,
sortings
800
x5971
768G
The Winds of Winter
binary search
,
data structures
3300
x374
768F
Barrels and boxes
brute force
,
combinatorics
,
math
,
number theory
,
probabilities
2300
x1046
768E
Game of Stones
bitmasks
,
dp
,
games
2100
x3078
768D
Jon and Orbs
dp
,
math
,
probabilities
2200
x3025
768C
Jon Snow and his Favourite Number
brute force
,
dp
,
implementation
,
sortings
1800
x3840
768B
Code For 1
constructive algorithms
,
dfs and similar
,
divide and conquer
1600
x6169
768A
Oath of the Night's Watch
constructive algorithms
,
sortings
900
x28534
767E
Change-free
greedy
2400
x1021
767D
Cartons of milk
binary search
,
data structures
,
greedy
,
sortings
,
two pointers
2100
x2278
767C
Garland
dfs and similar
,
graphs
,
greedy
,
trees
2000
x4289
767B
The Queue
brute force
,
greedy
2100
x2157
767A
Snacktower
data structures
,
implementation
1100
x20990
766E
Mahmoud and a xor trip
bitmasks
,
constructive algorithms
,
data structures
,
dfs and similar
,
dp
,
math
,
trees
2100
x3108
766D
Mahmoud and a Dictionary
data structures
,
dfs and similar
,
dp
,
dsu
,
graphs
2000
x3481
766C
Mahmoud and a Message
brute force
,
dp
,
greedy
,
strings
1700
x4573
766B
Mahmoud and a Triangle
constructive algorithms
,
geometry
,
greedy
,
math
,
number theory
,
sortings
1000
x34178
766A
Mahmoud and Longest Uncommon Subsequence
constructive algorithms
,
strings
1000
x31598
765G
Math, math everywhere
brute force
,
dp
,
math
,
meet-in-the-middle
,
number theory
3200
x88
765F
Souvenirs
data structures
3100
x2175
765E
Tree Folding
dfs and similar
,
dp
,
greedy
,
implementation
,
trees
2200
x1298
765D
Artsem and Saunders
constructive algorithms
,
dsu
,
math
1700
x2498
765C
Table Tennis Game 2
math
1200
x7046
765B
Code obfuscation
greedy
,
implementation
,
strings
1100
x7169
765A
Neverending competitions
implementation
,
math
900
x9112
764B
Timofey and cubes
constructive algorithms
,
implementation
900
x12079
764A
Taymyr is calling you
brute force
,
implementation
,
math
800
x16501
763E
Timofey and our friends animals
data structures
,
divide and conquer
,
dsu
2900
x516
763D
Timofey and a flat tree
data structures
,
graphs
,
hashing
,
shortest paths
,
trees
2900
x584
763C
Timofey and remoduling
brute force
,
implementation
,
math
,
number theory
2600
x725
763B
Timofey and rectangles
constructive algorithms
,
geometry
2100
x2854
763A
Timofey and a tree
dfs and similar
,
dp
,
dsu
,
graphs
,
implementation
,
trees
1600
x10915
762F
Tree nesting
combinatorics
,
graphs
,
trees
2800
x388
762E
Radio stations
binary search
,
data structures
2200
x1451
762D
Maximum path
dp
,
greedy
,
implementation
2300
x1604
762C
Two strings
binary search
,
hashing
,
strings
,
two pointers
2100
x2624
762B
USB vs. PS/2
greedy
,
implementation
,
sortings
,
two pointers
1400
x8763
762A
k-th divisor
math
,
number theory
1400
x21071
761F
Dasha and Photos
brute force
,
data structures
,
dp
,
implementation
2600
x421
761E
Dasha and Puzzle
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
,
trees
2000
x2203
761D
Dasha and Very Difficult Problem
binary search
,
brute force
,
constructive algorithms
,
greedy
,
sortings
1700
x4088
761C
Dasha and Password
brute force
,
dp
,
implementation
1500
x5917
761B
Dasha and friends
brute force
,
implementation
,
math
1300
x6923
761A
Dasha and Stairs
brute force
,
constructive algorithms
,
implementation
,
math
1000
x14644
760B
Frodo and pillows
binary search
,
greedy
1500
x6790
760A
Petr and a calendar
implementation
,
math
800
x8294
758F
Geometrical Progression
brute force
,
math
,
number theory
2400
x654
758E
Broken Tree
dfs and similar
,
dp
,
graphs
,
greedy
,
trees
2600
x503
758D
Ability To Convert
constructive algorithms
,
dp
,
greedy
,
math
,
strings
2000
x2777
758C
Unfair Poll
binary search
,
constructive algorithms
,
implementation
,
math
1700
x3903
758B
Blown Garland
brute force
,
implementation
,
number theory
1100
x10286
758A
Holiday Of Equality
implementation
,
math
800
x64188
757G
Can Bash Save the Day?
data structures
,
divide and conquer
,
graphs
,
trees
3400
x537
757F
Team Rocket Rises Again
data structures
,
graphs
,
shortest paths
2800
x1205
757E
Bash Plays with Functions
brute force
,
combinatorics
,
dp
,
number theory
2500
x1395
757D
Felicity's Big Secret Revealed
bitmasks
,
dp
2200
x1440
757C
Felicity is Coming!
data structures
,
hashing
,
sortings
,
strings
1900
x2390
757B
Bash's Big Day
greedy
,
math
,
number theory
1400
x10545
757A
Gotta Catch Em' All!
implementation
1000
x11346
756F
Long number
expression parsing
,
math
,
number theory
3400
x106
756E
Byteland coins
combinatorics
,
dp
,
math
3200
x189
756D
Bacterial Melee
brute force
,
combinatorics
,
dp
,
string suffix structures
2400
x1016
756C
Nikita and stack
data structures
2200
x1367
756B
Travel Card
binary search
,
dp
1600
x3886
756A
Pavel and barbecue
constructive algorithms
,
dfs and similar
1700
x3081
755G
PolandBall and Many Other Balls
combinatorics
,
divide and conquer
,
dp
,
fft
,
math
,
number theory
3200
x960
755F
PolandBall and Gifts
bitmasks
,
dp
,
greedy
2600
x1486
755E
PolandBall and White-Red graph
constructive algorithms
,
graphs
,
shortest paths
2400
x864
755D
PolandBall and Polygon
data structures
2000
x2566
755C
PolandBall and Forest
dfs and similar
,
dsu
,
graphs
,
interactive
,
trees
1300
x12939
755B
PolandBall and Game
binary search
,
data structures
,
games
,
greedy
,
sortings
,
strings
1100
x11621
755A
PolandBall and Hypothesis
brute force
,
graphs
,
math
,
number theory
800
x18492
754E
Dasha and cyclic table
bitmasks
,
brute force
,
fft
,
strings
,
trees
2600
x509
754D
Fedor and coupons
binary search
,
data structures
,
greedy
,
sortings
2100
x2479
754C
Vladik and chat
brute force
,
constructive algorithms
,
dp
,
implementation
,
strings
2200
x963
754B
Ilya and tic-tac-toe game
brute force
,
implementation
1100
x7321
754A
Lesha and array splitting
constructive algorithms
,
greedy
,
implementation
1200
x8850
753C
Interactive Bulls and Cows (Hard)
brute force
,
constructive algorithms
,
interactive
2500
x315
753B
Interactive Bulls and Cows (Easy)
brute force
,
constructive algorithms
,
implementation
1600
x1256
753A
Santa Claus and Candies
dp
,
greedy
,
math
1000
x9284
750H
New Year and Snowy Grid
dfs and similar
,
dsu
,
graphs
,
interactive
3500
x202
750G
New Year and Binary Tree Paths
bitmasks
,
brute force
,
combinatorics
,
dp
3200
x470
750F
New Year and Finding Roots
constructive algorithms
,
implementation
,
interactive
,
trees
2800
x510
750E
New Year and Old Subsequence
data structures
,
divide and conquer
,
dp
,
matrices
2600
x1657
750D
New Year and Fireworks
brute force
,
data structures
,
dfs and similar
,
dp
,
implementation
1900
x3102
750C
New Year and Rating
binary search
,
greedy
,
math
1600
x6616
750B
New Year and North Pole
geometry
,
implementation
1300
x9540
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