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Before contest
CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!)
31:06:32
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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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Problems
#
Name
1431I
Cyclic Shifts
*special problem
,
strings
2900
x41
1431H
Rogue-like Game
*special problem
,
brute force
,
greedy
,
two pointers
2600
x63
1431G
Number Deletion Game
*special problem
,
dp
,
games
,
greedy
2100
x137
1431F
Neural Network Problem
*special problem
,
binary search
,
greedy
2100
x152
1431E
Chess Match
*special problem
2000
x214
1431D
Used Markers
*special problem
,
greedy
1500
x444
1431C
Black Friday
*special problem
,
implementation
1600
x690
1431B
Polycarp and the Language of Gods
*special problem
,
implementation
,
two pointers
1400
x994
1431A
Selling Hamburgers
*special problem
800
x1770
1403C
Chess Rush
*special problem
,
combinatorics
,
dp
,
implementation
,
math
3200
x42
1403B
Spring cleaning
*special problem
,
data structures
,
dfs and similar
,
graphs
,
trees
2300
x356
1403A
The Potion of Great Power
*special problem
,
2-sat
,
binary search
,
data structures
,
graphs
,
interactive
,
sortings
,
two pointers
2400
x281
1402C
Star Trek
*special problem
,
combinatorics
,
dfs and similar
,
dp
,
games
,
graphs
,
matrices
,
trees
2600
x195
1402B
Roads
*special problem
,
geometry
,
sortings
2900
x101
1402A
Fancy Fence
*special problem
,
data structures
,
dsu
,
implementation
,
math
,
sortings
1800
x1122
1387C
Viruses
*special problem
,
dp
,
shortest paths
,
string suffix structures
2900
x121
1387B2
Village (Maximum)
*special problem
,
dfs and similar
,
trees
2500
x783
1387B1
Village (Minimum)
*special problem
,
dp
,
greedy
,
trees
2100
x1284
1387A
Graph
*special problem
,
binary search
,
dfs and similar
,
dp
,
math
,
ternary search
2100
x663
1386C
Joker
*special problem
,
bitmasks
,
data structures
,
divide and conquer
,
dsu
2800
x422
1386B
Mixture
*special problem
,
data structures
,
geometry
,
math
,
sortings
2900
x116
1386A
Colors
*special problem
,
binary search
,
constructive algorithms
,
interactive
2700
x244
1356D2
Quantum Classification - 2
*special problem
x121
1356D1
Quantum Classification - 1
*special problem
x131
1356C
Prepare state |01⟩ + |10⟩ + |11⟩
*special problem
x297
1356B2
Decrement
*special problem
x277
1356B1
Increment
*special problem
x277
1356A5
Distinguish Z from -Z
*special problem
x325
1356A4
Distinguish I ⊗ X from CNOT
*special problem
x453
1356A3
Distinguish Z from S
*special problem
x455
1356A2
Distinguish I from Z
*special problem
x482
1356A1
Distinguish I from X
*special problem
x597
1346I
Pac-Man 2.0
*special problem
,
dp
2900
x43
1346H
Game with Segments
*special problem
,
data structures
,
games
2700
x45
1346G
Two IP Cameras
*special problem
,
math
,
number theory
2300
x129
1346F
Dune II: Battle For Arrakis
*special problem
,
data structures
,
greedy
,
math
2000
x217
1346E
Magic Tricks
*special problem
,
dp
,
graphs
1700
x367
1346D
Constructing the Dungeon
*special problem
,
graphs
,
greedy
1600
x475
1346C
Spring Cleaning
*special problem
,
greedy
,
sortings
1600
x577
1346B
Boot Camp
*special problem
,
greedy
1400
x1175
1346A
Color Revolution
*special problem
,
math
1000
x1935
1331H
It's showtime
*special problem
x615
1331G
Lingua Romana
*special problem
x480
1331F
Elementary!
*special problem
,
brute force
,
dp
,
strings
x551
1331E
Jordan Smiley
*special problem
,
dfs and similar
,
geometry
,
implementation
x1195
1331D
Again?
*special problem
,
implementation
x11825
1331C
...And after happily lived ever they
*special problem
,
bitmasks
x3119
1331B
Limericks
*special problem
,
math
,
number theory
x6948
1331A
Is it rated?
*special problem
x16819
1297I
Falling Blocks
*special problem
,
data structures
x27
1297H
Paint the String
*special problem
,
dp
,
strings
x40
1297G
M-numbers
*special problem
,
dp
,
math
x64
1297F
Movie Fan
*special problem
,
data structures
,
greedy
,
implementation
,
sortings
x109
1297E
Modernization of Treeland
*special problem
,
dfs and similar
,
trees
x192
1297D
Bonus Distribution
*special problem
,
binary search
,
greedy
,
sortings
x254
1297C
Dream Team
*special problem
,
greedy
x388
1297B
Cartoons
*special problem
,
implementation
,
sortings
x395
1297A
Likes Display
*special problem
,
implementation
x860
1275F
Шардирование постов
*special problem
,
binary search
,
interactive
x91
1275E3
Контрольная сумма
*special problem
x56
1275E2
Контрольная сумма
*special problem
x130
1275E1
Контрольная сумма
*special problem
x254
1275D
Storage2
*special problem
x421
1275C
#define Задача B ...
*special problem
x668
1275B
Code Review
*special problem
x817
1275A
Скрытый друг
*special problem
x885
1211I
Unusual Graph
*special problem
,
graphs
3000
x33
1211H
Road Repair in Treeland
*special problem
,
binary search
,
dp
,
trees
3100
x40
1211G
King's Path
*special problem
,
math
,
trees
2500
x65
1211F
kotlinkotlinkotlinkotlin...
*special problem
,
graphs
,
implementation
,
strings
2300
x117
1211E
Double Permutation Inc.
*special problem
,
binary search
,
greedy
2000
x187
1211D
Teams
*special problem
,
binary search
,
greedy
,
math
2000
x220
1211C
Ice Cream
*special problem
,
greedy
,
sortings
1700
x469
1211B
Traveling Around the Golden Ring of Berland
*special problem
,
implementation
1500
x749
1211A
Three Problems
*special problem
,
implementation
1000
x1249
1193C
Scissors and Tape
*special problem
,
constructive algorithms
,
geometry
x35
1193B
Magic Tree
*special problem
,
data structures
,
dp
,
trees
x411
1193A
Amusement Park
*special problem
,
dp
,
math
x232
1192C
Cubeword
*special problem
,
brute force
,
dp
,
meet-in-the-middle
x320
1192B
Dynamic Diameter
*special problem
,
data structures
,
dfs and similar
,
divide and conquer
,
trees
x980
1192A
Building Skyscrapers
*special problem
x56
1170I
Good Subsets
*special problem
,
dp
x35
1170H
Longest Saw
*special problem
,
constructive algorithms
x43
1170G
Graph Decomposition
*special problem
,
graphs
x68
1170F
Wheels
*special problem
,
binary search
,
greedy
x113
1170E
Sliding Doors
*special problem
,
binary search
x251
1170D
Decoding of Integer Sequences
*special problem
,
data structures
,
implementation
x410
1170C
Minus and Minus Give Plus
*special problem
,
implementation
,
strings
x765
1170B
Bad Days
*special problem
,
implementation
x985
1170A
Three Integers Again
*special problem
,
math
x1355
1160A2
Collaboration
*special problem
1115U3
Block unitary
*special problem
1700
x195
1115U2
Chessboard unitary
*special problem
1600
x227
1115U1
Anti-diagonal unitary
*special problem
1500
x250
1115G3
Palindrome checker oracle
*special problem
1600
x224
1115G2
OR oracle
*special problem
1600
x305
1115G1
AND oracle
*special problem
1100
x380
1057C
Tanya and Colored Candies
*special problem
,
dp
2000
x852
1057B
DDoS
*special problem
,
brute force
1400
x1774
1057A
Bmail Computer Network
*special problem
,
dfs and similar
,
trees
900
x5688
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